Trip Report II

> Do fuel injection system suffer the same issue with ethanol and vapor issues?

Tom,

Some have reported that they did, more than that I cannot say as I am not one of them.

Matt
--
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
 
> I was having the same problem used all of the counter measures one could think of with some improvements. Only when I started using Non Ethanol
> gas did my problems finally go away . I know it’s more expensive but it gives me peace of mind while driving . I use the App Pure Gas which shows
> you every gas station that sells Non Ethanol gas stations in America you’ll find they have thousands out there . Just takes a little planning with
> your gas stops . You might not need Non Ethanol in the winter cooler months but during the hot summer months I don’t leave home without it .
> You’ll also find you will get better gas mileage using Non Ethanol gas as a bonus against the higher price.

Gregory,

I know the better fuel rate is a fact, early on, I kept very consistent track of fuel and it quality. One thing I could count on was a increase in
fuel rate (reduction of MPG) that would be a very close match to the alcohol content as measured.

For a while we did try to hit non-E fuel, but we are travelers and even with the site running on mu laptop underway, we often could not hit a
source/price/location as it was required. I actually have a dealer nearby, but the premium for the Non-E is way more than the improvement in the fuel
rate. I know, I have tried. I still want to do the pumps near the tank mod, but it is not a pressing issue.

Matt
--
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
 
I too prefer non-ethanol gas, but I find it pretty scarce in my part of the country. After experiencing the bad vapor lock on the way up to
Mescalero, we checked puregas.org and found a station in Alamagordo that had id. I topped off the tanks with about 20 gallons of it plus added a
small bottle of Lucas Ethanol treatment, and it was somewhat better, but still gave me a little trouble on the hill, westbound out of Las Cruces on
I-10.

We didn't get any more gas until Willcox, then had a little bit of an issue going up into Texas Canyon, and later coming out of the San Pedro River
valley west of Benson. No further issues the rest of the way home.
--
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles,
Solar battery charging. GMCSJ and GMCMI member
 
Did some figuring on cost analysis between Ethanol cost and Non Ethanol Gas cost . Let’s use per 100 gallons of gas consumed . I’m my neck of the
woods Ethanol gas today costs 2.67 per gallon Non Ethanol gas 3.00 dollars per gallon . If one gets say 6 miles per gallon that 100 gallons would
cost you 265 dollars that same 100 gallons Non Ethanol would cost you 300 dollars . Up front Non Ethanol Gas cost you around 35 more per 100 dollars
right ? Know let’s factor in the 1 to 2 miles more MPG one gets using Non Ethanol gas . The Ethanol gas will let you drive at 6 MPG around 600 miles
, the Non Ethanol at 8 MPG will give you 800 miles range . That’s 200 miles more per 100 gallon usage for the Non Ethanol That extra 200 miles
range would cost the Ethanol users at 2.65 per gallon cost around 75 dollars . The extra cost of using the Non Ethanol gas was 35 per 100 gallons so
one comes out ahead on cost using Non Ethanol Gas . Please of my analysis is wrong please correct me . A side note if the Our government really
wanted our cafe mileage standards,MPG , to increase over night and bring down the consumption of gasoline in our country they would ban all Ethanol
gas for it costs more per gallon to make , has 30 percent less energy per unit equals less MPG per gallon , it would also save us billions our
government subsidies the corns producers that grow corn for Ethanol . Just a thought ?’
 
Now imagine if could of topped off with say 45 gallons of Non Ethanol gas in it . Perhaps you wouldn’t of had any problems?
 
I've been averaging 8.2 MPG on Ethanol. 403, 3:70 FD. 78 Royale at 12,000 lbs. Pulling Linda's 5,000 lbs handicap lift van. Thus 17,000 lbs. GVW. Most GMC completed coach's come in at around 10,500 lbs I believe. Not sure on that.
Bob Dunahugh
 
Bob,
Not very many people are able to get things set up so you can pull that
much weight and pull 8..2 mpg aver.

> I've been averaging 8.2 MPG on Ethanol. 403, 3:70 FD. 78 Royale at 12,000
> lbs. Pulling Linda's 5,000 lbs handicap lift van. Thus 17,000 lbs. GVW.
> Most GMC completed coach's come in at around 10,500 lbs I believe. Not sure
> on that.
> Bob Dunahugh
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>

--
Jim Kanomata ASE
Applied/GMC, Newark,CA
jimk
http://www.gmcrvparts.com
1-800-752-7502
 
Gregory,

While I do not disagree with your premise, my experience was different. For years before the current overhaul and new cam, Chaumière could be
counted on to run near or at 9.2MPG. The odd time I got a near full fill of E0 fuel, she turned in a 10.0. (Real close to the nominal 10%.)
Using the calibration allowed by the different ethanol levels, I was able to calculate that the ethanol concentration was an accurate predictor of the
fuel rate for that fill. And after many trials and lots of samples and miles, it proved true.

So, while the 100 gallon fuel cost might be close, the expected improvement with E0 is not likely to materialize.

Now, in Canada, the premium fuel are all E0 and the price spread is about the same for regular to premium that we see. There, it is probably worth
doing.

Matt
--
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
 
2 weeks ago, the GMC CASCADERS had their first rally since Feb 2019. Been a
long, long dry spell. My 1978 Royale has been resting in her covered
carport since returning from the Valentine's Rally.
So, I would, from time to time, start and thoroughly warm up the 403,
maybe going for a short dive, maybe not. Each time involved starting the
Onan and turning on the big Roof air conditioning dinosaur, running it for
15 minutes or so. Then, sadly closing everything down, wishing the pandemic
upon some other planet.
So Judy and I decided to prepare the old girl for a rally. Opened
drawers to reveal evidence of mouses in the house. So, everything came out
of the coach, and either wound up in the garbage/recycling bins, or went
through the dishwasher on sanitize cycle. All the nonskid sheets went away
and were replaced with new.
So I took a long hard look at the systems on board, decided the
existing RV toilet needed to go away. Yanked the old one out, and took a
long, hard, critical look at the bathroom. So, that needed a complete
remodeling. Which I did. Took off the bathroom door, into the shop,
stripped and refinished it. That gave me enough room to work in the
confines of the dry bath. Days turned into weeks. But, eventually the new
ceramic bowl toilet found its way home. Plumbing checked, all ok.
120 volt system had some issues, so, the bedroom came apart next. No
small task. Opened up the electrical compartment, Mickey and his family had
been hard at work in there. So, out came the shop vac and mouse housing
unit went bye bye. All the electrical connections tightened and insulation
checked out OK. 50 Amp automatic transfer switch fixed so it cycled
correctly. During this same time, I had a pair of electricians wire my
carport for a 30 amp plug and some 120 volt 20 amp gfci receptacles. Sure
nice not to have extension cords strung out across the ground any more. So,
potable tank and pump checked out and flushed and refilled. Black and grey
tanks pumped and mascerator serviced. Whew. Finally ready for the road.
Letting them sit for long stretches is a whole bunch of work getting things
back in shape.
Finally, set off on our rolling rally. From Salem, to Portland, then
East through the Columbia gorge to the Port of Morrow RV Estates. Spent a
couple of nights here while touring the Onion processing plant, the
Tillamook Cheese factory, a 11,000 acre farm that uses robotic machines to
take care of weeds and leafhoppers which it zaps with lasers. Completely on
it's own, row after row. Onions, Potatoes, Carrots, Alfalfa, and a computer
center that automatically waters all those crops from a central location,
Impressive doesn’t begin to cover it. Oh, I forgot, Grapes, thousands of
acres of them. What do you do with all those grapes? Well, you build a
modern winery. More stainless steel in that fully automated place then I
have ever seen. Wow.
Then we were on the road again, wound up at the Columbia River at a
large Hydroelectric Dam, where they had a fish counting area. Quite cool
 
With fuel injection there is absolutely no standard to the way the fuel delivery systems are done. So some report zero vapor lock problems, others
chase some fuel delivery issues.

Theoretically fuel injection would have far less chance at vapor lock due to the fact you are both pressuring the fuel to different degree(q-jet carb
is 4-7 psi. My rochester tbi is 12psi. Fi-tech is 50+ psi, ect…). And normally when one installs efi, they put pumps
Closer to tank and do more pushing then sucking of gas.

But pressurizing gas for efi also creates some heat in the fuel system as well.

Most people report very little issue with vapor lock on fuel injection. But in extreme heat our tanks are still prone to more heat and gas boiling
them most other vehicles.
--
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
 
I would think that the vast majority of vapor lock is on the pump's
low-pressure side because the pump does not pump vaper very well. 5 PSI
should push the vaper rather than let it lock.

> With fuel injection there is absolutely no standard to the way the fuel
> delivery systems are done. So some report zero vapor lock problems, others
> chase some fuel delivery issues.
>
> Theoretically fuel injection would have far less chance at vapor lock due
> to the fact you are both pressuring the fuel to different degree(q-jet carb
> is 4-7 psi. My rochester tbi is 12psi. Fi-tech is 50+ psi, ect…).
> And normally when one installs efi, they put pumps
> Closer to tank and do more pushing then sucking of gas.
>
> But pressurizing gas for efi also creates some heat in the fuel system as
> well.
>
> Most people report very little issue with vapor lock on fuel injection.
> But in extreme heat our tanks are still prone to more heat and gas boiling
> them most other vehicles.
> --
> Jon Roche
> 75 palm beach
> EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
> St. Cloud, MN
> http://lqqkatjon.blogspot.com/
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>

--

*John Phillips*
 
I have always use the cheap fuel and have been lucky.

> 2 weeks ago, the GMC CASCADERS had their first rally since Feb 2019. Been a
> long, long dry spell. My 1978 Royale has been resting in her covered
> carport since returning from the Valentine's Rally.
> So, I would, from time to time, start and thoroughly warm up the 403,
> maybe going for a short dive, maybe not. Each time involved starting the
> Onan and turning on the big Roof air conditioning dinosaur, running it for
> 15 minutes or so. Then, sadly closing everything down, wishing the pandemic
> upon some other planet.
> So Judy and I decided to prepare the old girl for a rally. Opened
> drawers to reveal evidence of mouses in the house. So, everything came out
> of the coach, and either wound up in the garbage/recycling bins, or went
> through the dishwasher on sanitize cycle. All the nonskid sheets went away
> and were replaced with new.
> So I took a long hard look at the systems on board, decided the
> existing RV toilet needed to go away. Yanked the old one out, and took a
> long, hard, critical look at the bathroom. So, that needed a complete
> remodeling. Which I did. Took off the bathroom door, into the shop,
> stripped and refinished it. That gave me enough room to work in the
> confines of the dry bath. Days turned into weeks. But, eventually the new
> ceramic bowl toilet found its way home. Plumbing checked, all ok.
> 120 volt system had some issues, so, the bedroom came apart next. No
> small task. Opened up the electrical compartment, Mickey and his family had
> been hard at work in there. So, out came the shop vac and mouse housing
> unit went bye bye. All the electrical connections tightened and insulation
> checked out OK. 50 Amp automatic transfer switch fixed so it cycled
> correctly. During this same time, I had a pair of electricians wire my
> carport for a 30 amp plug and some 120 volt 20 amp gfci receptacles. Sure
> nice not to have extension cords strung out across the ground any more. So,
> potable tank and pump checked out and flushed and refilled. Black and grey
> tanks pumped and mascerator serviced. Whew. Finally ready for the road.
> Letting them sit for long stretches is a whole bunch of work getting things
> back in shape.
> Finally, set off on our rolling rally. From Salem, to Portland, then
> East through the Columbia gorge to the Port of Morrow RV Estates. Spent a
> couple of nights here while touring the Onion processing plant, the
> Tillamook Cheese factory, a 11,000 acre farm that uses robotic machines to
> take care of weeds and leafhoppers which it zaps with lasers. Completely on
> it's own, row after row. Onions, Potatoes, Carrots, Alfalfa, and a computer
> center that automatically waters all those crops from a central location,
> Impressive doesn’t begin to cover it. Oh, I forgot, Grapes, thousands of
> acres of them. What do you do with all those grapes? Well, you build a
> modern winery. More stainless steel in that fully automated place then I
> have ever seen. Wow.
> Then we were on the road again, wound up at the Columbia River at a
> large Hydroelectric Dam, where they had a fish counting area. Quite cool.
> From there, we went to Crow Butte RV park on the Washington State side of
> the Columbia River. Just in time to gather for what passes for social time
> in a Pandemic. B.Y.O.B. chairs, provide your own meals in your own coaches.
> The next day, up the Roosevelt Grade to the Horse Heaven Hills,
> winding up at the small town of Bickleton. Their claim to fame? The
> Bluebird Capitol of the world, and a 110 year old Rodeo! Yee Haw!
> After that, we could have retraced our path to Interstate 84 and home like
> we came, but we decided to go home via Yakima and from there to the White
> Pass on highway 12 to Packwood, Morton, Mossyrock, and Salkum, where I grew
> up. Just a drive through this time. Wanted to get home. 609 miles round
> trip. About + 8 mpg overall on Crapahol fuel. Coach didn't miss a lack.
> Good rally, been a long time coming.
> Jim Hupy
> Salem, Oregon
>
>

>
> > Bob,
> > Not very many people are able to get things set up so you can pull that
> > much weight and pull 8..2 mpg aver.
> >
> >
> > On Sun, Jun 27, 2021 at 2:12 PM Bob Dunahugh

> >
> > > I've been averaging 8.2 MPG on Ethanol. 403, 3:70 FD. 78 Royale at
> > 12,000
> > > lbs. Pulling Linda's 5,000 lbs handicap lift van. Thus 17,000 lbs. GVW.
> > > Most GMC completed coach's come in at around 10,500 lbs I believe. Not
> > sure
> > > on that.
> > > Bob Dunahugh
> > > _______________________________________________
> > > GMCnet mailing list
> > > Unsubscribe or Change List Options:
> > >
> >
> >
> > --
> > Jim Kanomata ASE
> > Applied/GMC, Newark,CA
> > jimk
> > http://www.gmcrvparts.com
> > 1-800-752-7502
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> >
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>

--
Jim Kanomata ASE
Applied/GMC, Newark,CA
jimk
http://www.gmcrvparts.com
1-800-752-7502
 
Sounds like a great trip, Jim. Bob and I drove the Columbia Gorge on one
our trips. Bought Walla Walla onions. Saw the fish counting ladder with
few fish moving up it at the time.

But you mentioned Horse Heaven Hills winery. We didn't go there, but have
found their H3 cab in our stores here, in Austin, and it's a nice,
drinkable wine.

Bob's health has deteriorated so we are not traveling these days.

I appreciate you sharing your experiences with us.

Just did a "hit and miss" cleanup of our coach to sell it and found about
the same conditions you had. Would still like to be GMCing. Use it!

Sandra Price
Spicewood, TX

> 2 weeks ago, the GMC CASCADERS had their first rally since Feb 2019. Been a
> long, long dry spell. My 1978 Royale has been resting in her covered
> carport since returning from the Valentine's Rally.
> So, I would, from time to time, start and thoroughly warm up the 403,
> maybe going for a short dive, maybe not. Each time involved starting the
> Onan and turning on the big Roof air conditioning dinosaur, running it for
> 15 minutes or so. Then, sadly closing everything down, wishing the pandemic
> upon some other planet.
> So Judy and I decided to prepare the old girl for a rally. Opened
> drawers to reveal evidence of mouses in the house. So, everything came out
> of the coach, and either wound up in the garbage/recycling bins, or went
> through the dishwasher on sanitize cycle. All the nonskid sheets went away
> and were replaced with new.
> So I took a long hard look at the systems on board, decided the
> existing RV toilet needed to go away. Yanked the old one out, and took a
> long, hard, critical look at the bathroom. So, that needed a complete
> remodeling. Which I did. Took off the bathroom door, into the shop,
> stripped and refinished it. That gave me enough room to work in the
> confines of the dry bath. Days turned into weeks. But, eventually the new
> ceramic bowl toilet found its way home. Plumbing checked, all ok.
> 120 volt system had some issues, so, the bedroom came apart next. No
> small task. Opened up the electrical compartment, Mickey and his family had
> been hard at work in there. So, out came the shop vac and mouse housing
> unit went bye bye. All the electrical connections tightened and insulation
> checked out OK. 50 Amp automatic transfer switch fixed so it cycled
> correctly. During this same time, I had a pair of electricians wire my
> carport for a 30 amp plug and some 120 volt 20 amp gfci receptacles. Sure
> nice not to have extension cords strung out across the ground any more. So,
> potable tank and pump checked out and flushed and refilled. Black and grey
> tanks pumped and mascerator serviced. Whew. Finally ready for the road.
> Letting them sit for long stretches is a whole bunch of work getting things
> back in shape.
> Finally, set off on our rolling rally. From Salem, to Portland, then
> East through the Columbia gorge to the Port of Morrow RV Estates. Spent a
> couple of nights here while touring the Onion processing plant, the
> Tillamook Cheese factory, a 11,000 acre farm that uses robotic machines to
> take care of weeds and leafhoppers which it zaps with lasers. Completely on
> it's own, row after row. Onions, Potatoes, Carrots, Alfalfa, and a computer
> center that automatically waters all those crops from a central location,
> Impressive doesn’t begin to cover it. Oh, I forgot, Grapes, thousands of
> acres of them. What do you do with all those grapes? Well, you build a
> modern winery. More stainless steel in that fully automated place then I
> have ever seen. Wow.
> Then we were on the road again, wound up at the Columbia River at a
> large Hydroelectric Dam, where they had a fish counting area. Quite cool.
> From there, we went to Crow Butte RV park on the Washington State side of
> the Columbia River. Just in time to gather for what passes for social time
> in a Pandemic. B.Y.O.B. chairs, provide your own meals in your own coaches.
> The next day, up the Roosevelt Grade to the Horse Heaven Hills,
> winding up at the small town of Bickleton. Their claim to fame? The
> Bluebird Capitol of the world, and a 110 year old Rodeo! Yee Haw!
> After that, we could have retraced our path to Interstate 84 and home like
> we came, but we decided to go home via Yakima and from there to the White
> Pass on highway 12 to Packwood, Morton, Mossyrock, and Salkum, where I grew
> up. Just a drive through this time. Wanted to get home. 609 miles round
> trip. About + 8 mpg overall on Crapahol fuel. Coach didn't miss a lack.
> Good rally, been a long time coming.
> Jim Hupy
> Salem, Oregon
>
>

>
> > Bob,
> > Not very many people are able to get things set up so you can pull that
> > much weight and pull 8..2 mpg aver.
> >
> >
> > On Sun, Jun 27, 2021 at 2:12 PM Bob Dunahugh

> >
> > > I've been averaging 8.2 MPG on Ethanol. 403, 3:70 FD. 78 Royale at
> > 12,000
> > > lbs. Pulling Linda's 5,000 lbs handicap lift van. Thus 17,000 lbs. GVW.
> > > Most GMC completed coach's come in at around 10,500 lbs I believe. Not
> > sure
> > > on that.
> > > Bob Dunahugh
> > > _______________________________________________
> > > GMCnet mailing list
> > > Unsubscribe or Change List Options:
> > >
> >
> >
> > --
> > Jim Kanomata ASE
> > Applied/GMC, Newark,CA
> > jimk
> > http://www.gmcrvparts.com
> > 1-800-752-7502
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> >
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
 
Geez Sandra, I am so sorry to hear of Bob's health. I have health issues
also, but I try to do what I can within my limits. In fact, I push those
limits probably more than I should, but, I figure that we only get to
travel down this path of life one time, and if I can manage it at all, I am
going to continue to do so. I wish you guys only the best. Hang in there.
Jim Hupy and Judy Countermine
Salem, Oregon

> Sounds like a great trip, Jim. Bob and I drove the Columbia Gorge on one
> our trips. Bought Walla Walla onions. Saw the fish counting ladder with
> few fish moving up it at the time.
>
> But you mentioned Horse Heaven Hills winery. We didn't go there, but have
> found their H3 cab in our stores here, in Austin, and it's a nice,
> drinkable wine.
>
> Bob's health has deteriorated so we are not traveling these days.
>
> I appreciate you sharing your experiences with us.
>
> Just did a "hit and miss" cleanup of our coach to sell it and found about
> the same conditions you had. Would still like to be GMCing. Use it!
>
> Sandra Price
> Spicewood, TX
>
>

>
> > 2 weeks ago, the GMC CASCADERS had their first rally since Feb 2019.
> Been a
> > long, long dry spell. My 1978 Royale has been resting in her covered
> > carport since returning from the Valentine's Rally.
> > So, I would, from time to time, start and thoroughly warm up the
> 403,
> > maybe going for a short dive, maybe not. Each time involved starting the
> > Onan and turning on the big Roof air conditioning dinosaur, running it
> for
> > 15 minutes or so. Then, sadly closing everything down, wishing the
> pandemic
> > upon some other planet.
> > So Judy and I decided to prepare the old girl for a rally. Opened
> > drawers to reveal evidence of mouses in the house. So, everything came
> out
> > of the coach, and either wound up in the garbage/recycling bins, or went
> > through the dishwasher on sanitize cycle. All the nonskid sheets went
> away
> > and were replaced with new.
> > So I took a long hard look at the systems on board, decided the
> > existing RV toilet needed to go away. Yanked the old one out, and took a
> > long, hard, critical look at the bathroom. So, that needed a complete
> > remodeling. Which I did. Took off the bathroom door, into the shop,
> > stripped and refinished it. That gave me enough room to work in the
> > confines of the dry bath. Days turned into weeks. But, eventually the new
> > ceramic bowl toilet found its way home. Plumbing checked, all ok.
> > 120 volt system had some issues, so, the bedroom came apart next. No
> > small task. Opened up the electrical compartment, Mickey and his family
> had
> > been hard at work in there. So, out came the shop vac and mouse housing
> > unit went bye bye. All the electrical connections tightened and
> insulation
> > checked out OK. 50 Amp automatic transfer switch fixed so it cycled
> > correctly. During this same time, I had a pair of electricians wire my
> > carport for a 30 amp plug and some 120 volt 20 amp gfci receptacles. Sure
> > nice not to have extension cords strung out across the ground any more.
> So,
> > potable tank and pump checked out and flushed and refilled. Black and
> grey
> > tanks pumped and mascerator serviced. Whew. Finally ready for the road.
> > Letting them sit for long stretches is a whole bunch of work getting
> things
> > back in shape.
> > Finally, set off on our rolling rally. From Salem, to Portland, then
> > East through the Columbia gorge to the Port of Morrow RV Estates. Spent a
> > couple of nights here while touring the Onion processing plant, the
> > Tillamook Cheese factory, a 11,000 acre farm that uses robotic machines
> to
> > take care of weeds and leafhoppers which it zaps with lasers. Completely
> on
> > it's own, row after row. Onions, Potatoes, Carrots, Alfalfa, and a
> computer
> > center that automatically waters all those crops from a central location,
> > Impressive doesn’t begin to cover it. Oh, I forgot, Grapes, thousands of
> > acres of them. What do you do with all those grapes? Well, you build a
> > modern winery. More stainless steel in that fully automated place then I
> > have ever seen. Wow.
> > Then we were on the road again, wound up at the Columbia River at a
> > large Hydroelectric Dam, where they had a fish counting area. Quite cool.
> > From there, we went to Crow Butte RV park on the Washington State side of
> > the Columbia River. Just in time to gather for what passes for social
> time
> > in a Pandemic. B.Y.O.B. chairs, provide your own meals in your own
> coaches.
> > The next day, up the Roosevelt Grade to the Horse Heaven Hills,
> > winding up at the small town of Bickleton. Their claim to fame? The
> > Bluebird Capitol of the world, and a 110 year old Rodeo! Yee Haw!
> > After that, we could have retraced our path to Interstate 84 and home
> like
> > we came, but we decided to go home via Yakima and from there to the White
> > Pass on highway 12 to Packwood, Morton, Mossyrock, and Salkum, where I
> grew
> > up. Just a drive through this time. Wanted to get home. 609 miles round
> > trip. About + 8 mpg overall on Crapahol fuel. Coach didn't miss a lack.
> > Good rally, been a long time coming.
> > Jim Hupy
> > Salem, Oregon
> >
> >
> > On Sun, Jun 27, 2021, 3:26 PM Jim Kanomata

> >
> > > Bob,
> > > Not very many people are able to get things set up so you can pull that
> > > much weight and pull 8..2 mpg aver.
> > >
> > >
> > > On Sun, Jun 27, 2021 at 2:12 PM Bob Dunahugh

> > >
> > > > I've been averaging 8.2 MPG on Ethanol. 403, 3:70 FD. 78 Royale at
> > > 12,000
> > > > lbs. Pulling Linda's 5,000 lbs handicap lift van. Thus 17,000 lbs.
> GVW.
> > > > Most GMC completed coach's come in at around 10,500 lbs I believe.
> Not
> > > sure
> > > > on that.
> > > > Bob Dunahugh
> > > > _______________________________________________
> > > > GMCnet mailing list
> > > > Unsubscribe or Change List Options:
> > > >
> > >
> > >
> > > --
> > > Jim Kanomata ASE
> > > Applied/GMC, Newark,CA
> > > jimk
> > > http://www.gmcrvparts.com
> > > 1-800-752-7502
> > > _______________________________________________
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I have the GM EFI system (Rochester TB and EBL computer) and haven't had any issues with vapour lock, but I'm also in the Great White North, so we
don't see the 100+F temperatures.

I know early adopters of the FiTech system had vapour lock issues with the surge tank system. It was easy to see why... using a low pressure pump to
fill the surge tank, OK. But they installed the high pressure pump and pressure regulator within the surge tank! So the 1 quart or so of fuel was
just going around and around within that little container picking up heat from the pump. At idle or low speed there was not enough new fuel being
introduced to absorb the heat being created by the pump. I saw reports of 130F on the surge tank. Apparently the new surge tank has fixed this issue.

Couple of suggestions.
- Change to dual electric pumps at the back instead of using a selector valve. Dual pumps gives you redundancy in case of a failed pump. It can help
in troubleshooting issues if one tank seems to be giving issues.

- Tanks boiling and pressure build-up in the tanks. Shouldn't the EVAP system be taking care of any pressure building up in the tanks? If you have
pressure in the tanks when you open the filler cap, then your EVAP system is not working. The EVAP system is also trapping any fuel vapours and
routing them into the engine for power. If your EVAP system is not working or is disconnected then you are losing fuel you paid for to the
atmosphere.

Has anyone put a temperature sensor and a vacuum sensor on the fuel line coming out of the tank to sense the actual fuel temps and the vacuum levels
in the lines before the pump? It might be interesting to those with chronic vapour lock.

As a side note: we took our new Dodge mini-van to Mexico in Jan/2020. It was showing about 8.5l/100Kms average fuel consumption. While in Mx I noticed
it dropped to approx 7.5l/100Kms. It dawned on me that they have no Ethanol in their fuel. When coming back home it went back up again of course.

--
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
 
That changed several years ago... According to Pure-Gas.org, these are
the only ethanol free options in Canada:

*All Canada:* Shell V-Power 91, Canadian Tire 91
*Atlantic Canada:* Irving Fuels premium
*Western Canada:* CO-OP premium
*Newfoundland, Nova Scotia, Prince Edward Island:* all unleaded gas
*Ontario:* Costco 91
*British Columbia:* Chevron 94

Rob
Victoria, BC
76 Royale - Rear Twins/Dry Bath

> ...
>
>
> Now, in Canada, the premium fuel are all E0 and the price spread is about the same for regular to premium that we see. There, it is probably worth
> doing.
>
> Matt
 
My understanding is that all Premium gas in Canada is Ethanol-free.

I'm not sure where Pure-gas gets that information, it doesn't cite a source. For the most part it depends on users to post the info, but then do they
check that info to a reliable source?

I once asked at the Shell station across from my office if any of their gas is Ethanol-free. His answer was that Shell gas has Nitrogen, not Ethanol!
lol.

I run Premium in my small engines to avoid Ethanol for them.

I don't get the Shell Nitrogen thing anyway. Air is 80% nitrogen anyway! I haven't noticed their marketing that much anymore.

--
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
 
> My understanding is that all Premium gas in Canada is Ethanol-free.
>
> I'm not sure where Pure-gas gets that information, it doesn't cite a source. For the most part it depends on users to post the info, but then do
> they check that info to a reliable source?
>
> I once asked at the Shell station across from my office if any of their gas is Ethanol-free. His answer was that Shell gas has Nitrogen, not
> Ethanol! lol.
>
> I run Premium in my small engines to avoid Ethanol for them.
>
> I don't get the Shell Nitrogen thing anyway. Air is 80% nitrogen anyway! I haven't noticed their marketing that much anymore.

It's a mish-mash and it's always changing. If you go to Petro-Can the 91 is ethanol free, but the 94 has ethanol. Most grades have up to 10%
ethanol.
We also have "summer" and "winter" gas, they load it up with stuff like butane in the winter as it's cheaper and the volatility isn't as important.
Your mileage will go down about 10% in winter partly because of this.

Most cashiers at a gas station won't have a clue if there's ethanol or not, at least none that I've asked. Even at the lakeside gas station that I
occasionally fill my boat tank at has ethanol, but the owner didn't know or care. (I make sure the last tank of the season is good stuff)

--
Burl Vibert
Kingston, Ontario
1976 GMC 26 foot, Sheridan reno, don't know original model
 
Hi jacking a thread. I have noticed at least in Southern Ontario that most Gas pumps are labelled with the percent of
Ethanol. 87 is USUALLY "up to 10% " 89 is usually 5-10 % and where I shop 91 is usually 0% . 93 is usually 10% as understand it is 91 with
Ethanol added. Interesting to talk to the fuel truck drivers as they are doing their delivery. Our families 3 fuel injected vehicles run
just fine on 87 with 10% Ethanol. By availability NOT choice. I wonder how people in Western U.S.A. and Canada are doing with record high
temperatures this week ? Anybody travelling ?
--
DAVE KING
lurker, wannabe
Toronto, Ontario, Canada
 
Well - according to Petro Can (click on "Do we put ethanol in our Petro-Canada gas?"):

https://www.petro-canada.ca/en/personal/fuel/gas

"Yes, all of our grades of gas, including our Ultra 94 high octane fuel , contain up to 10% ethanol content. This is required by federal and provincial regulations."

Our gas on Vancouver Island was fully ethanol free - until about mid 2018. Now - you need to shop for it, if it matters to you...

Rob
76 Royale Twin Beds, Dry Bath
Victoria, BC

>
> My understanding is that all Premium gas in Canada is Ethanol-free.
>
> I'm not sure where Pure-gas gets that information, it doesn't cite a source. For the most part it depends on users to post the info, but then do they
> check that info to a reliable source?
>
> I once asked at the Shell station across from my office if any of their gas is Ethanol-free. His answer was that Shell gas has Nitrogen, not Ethanol!
> lol.
>
> I run Premium in my small engines to avoid Ethanol for them.
>
> I don't get the Shell Nitrogen thing anyway. Air is 80% nitrogen anyway! I haven't noticed their marketing that much anymore.
>
> --
> Bruce Hislop
> ON Canada
> 77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
> My Staff says I never listen to them, or something like that
 
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