Durango Trip Report.....(Long)

les watson

New member
May 23, 2000
139
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GMCnetters....

Finally arrived home this morning (Saturday) from our first prolonged trip
in our newly acquired 77 Palm Beach (That Green Thing). 1427 miles in
12 Days.

We departed Orem, Utah with intentions of stopping at Newspaper Rock
near Canyon Lands National Park and then on to Mesa Verde prior to
arriving at the Durango Rally on Friday, the 21st of July.

The Details:

The coach battery had discharged to the point of not turning over the engine
a few days before departure so I had charged it with a 10 amp charger prior
to departure. We departed Orem tuesday morning and shut down in Green
River, Utah for lunch. After lunch, the battery was dead! Started the coach
generator and charged it enough to start the engine and stopped at an auto
supply house in Green River and replaced the coach battery with a new one.
Went on to Newspaper Rock and spent the night dry camping.

Next day (Wed 19th) we toured Canyon Lands National Park and headed for
Mesa Verde. Paid for two nights (19th & 20th) and found a camping spot in
the park. The brand new coach battery was DEAD! We had hookups so I
charged the new battery for about 8 hours, then started the engine and removed
the positive battery lead to see if the alternator was working. The engine
didn't
die so I assumed the alternator was ok.

Thursday (20th) toured Mesa Verde. Started engine with battery and then
disconnected it so it wouldn't discharge and ran on the Alternator. Each
stop I
would reconnect the battery to start and then disconnect. In the afternoon,
a fire started in Mesa Verde and the park was evacuated! We lost one night
of camping fees and we showed up at United Campground for the Mountainaire
Rally one day early in Durango. The first person I met upon stepping out
of the
coach upon arrival was Jerry Hoxsey. Arrangements were made to camp an extra
night. Several other coaches were already there and we were most graciously
welcomed.

Friday (21st) was normal check in day. I discussed my battery problem with
Jerry and
others and it was suggested that I check the alternator voltage
output. Upon doing
so, I found only 12 volt output instead of the 14 to 15 needed to keep the
battery
charged. Something was wrong with the alternator! After more discussions,
suggestions were made as to what might be the problem. Many other coaches
arrived and a very nice pot luck dinner and get acquainted social was
enjoyed by
all that evening.

Early Saturday (22nd) morning prior to the scheduled activities, I checked
some of the
suggestions and decided to tighten the belt to the alternator to see if
that would
help. I crawled under the coach and while loosing the adjusting nut,
managed to
cut my arm on a nearby sharp edge. My wife applied a bandage with some
comments about my aptitude with tools and I finished tightening the
belt. I started
the engine and checked the alternator voltage.....14
volts.....Fixed!!!! Now that
the GMC has drawn blood, I feel like I belong to the GMC community. Rally
activities included a catered breakfast, safety bull session, coach tours,
and meeting
many great GMC couples. A good time was had by all. Evening activities
included
a bar-b-que dinner and show at the Bar D Ranch. A terrific activity.

Sunday (23rd) started with a continental breakfast and much visiting. It
was also departure
day for some but since we had tickets for the train the next day,
arrangements were
made to stay two extra nights until Tuesday morning. Jim & Ottilie Anstett
and others
were kind enough to show us their coaches and some of their
modifications. Jim had
me try out his brakes to show how well they worked.....very impressive. I
think he has
a gauge of some kind for every function in his coach. We were
impressed. He was most
helpful explaining his numerous modifications. Emery Stora spent the
evening explaining
some of the system functions in my coach and showed me some of his
modifications.
I now have a long list of things I wish to do to improve my coach.

Monday (24th)....all day on the Durango-Silverton Historic Railroad. A
great time!

Tuesday (25th), we departed Durango headed for Longmont where my daughter
lives.
A very hot day! Climbing Wolf Creek Pass east of Durango, the steel gas line
would try to vapor lock even with the electric fuel pump running. We got
about two
thirds of the way up the pass and had to pull over to let the gas line
cool. After about
a half hour, started up and made it over the pass. Stopped for the eveing
at the
Royal Gorge and after sightseeing, stayed at the local KOA campground.

Wednesday (26th) and Thursday (27th) visited with my daughter in Longmont
Colorado.

Friday (28th) departed with intentions of returning home by way of
Interstate 80 across
Wyoming. Another hot day. Several times on uphill grades, the old
vaporlock problem
would require us to pull over to cool down prior to continuing. Lunch at
the flying J in
Rawlins, Wyoming. Hot afternoon. The gas line would work only for about
20 to 30
minutes before the engine would again start to surge and we would have to
fine a place
to stop to cool down. Took until 5PM to make it to Rock Springs. After
dinner, we
decided to spend the night at the Flying J in Rock Springs, but all the
truckers had
the same idea and it was way too noisy. We departed after sundown and
spent the
night at the Wal Mart in Evanston, Wyoming.

Saturday (29th) (Today) Departed Evanston at 6AM to avoid the
heat. Arrived home in
Orem, Utah about 8AM. No vaporlock problem as it was cool all the
way. Nice to be
home. A great trip and a real adventure dealing with all the GMC quirks
and the Mesa
Verde Evacuation.

Reflections:

The battery problem was fixed by tightening the alternator belt. No more
problems.
The steel gas line doesn't like hot weather. Even with the electric fuel
pump on and
the fan cluch working, the heat would cause engine surging and loss of
power. I need
to find a way to keep the gas line cool.
Perhaps blocking the exhaust manifold crossover, insulating the line
itself or rerouting
it. Perhaps ram air to the back of the engine compartment similar to Emery
Stora's
and venting the wheel wells to remove excess heat. Perhaps insulate the
bottom of
the gas tanks.........Any suggestions would be most appreciated.

GMCs spotted during trip.

Tuesday (18th) a repainted coach westbound in Interstate 70 east of Green
River, Utah
and also a north bound coach north of Moab Utah. Two in one day....both
waved and
blinked their headlights.

Tuesday (25th) a white with blue stripe coach for sale on the south side of
the highway
about 10 miles east of Durango in a dealer's lot.

Friday (28th) A Palm Beach just north of Fort Collins, heading into
town...Waived.

Saturday (29th) A coach for sale just north of Heber Utah sitting in a field.

If you read to the bottom of this......you need to find something else to do!

Thanks to all......

Les & Sharon Watson
Orem, Utah
77 Palm Beach (that likes it cool)
 
> GMCnetters....
> Finally arrived home this morning (Saturday) from our first prolonged
trip
> in our newly acquired 77 Palm Beach (That Green Thing). 1427 miles in
> 12 Days............

Great trip report, Les.
It was nice to meet you and your wife at the "lemonade party" in Durango -
wish we could have stayed longer!

Peter & Jodie Brandt
"Coachless in Durango"
77 Eleganza II
Colorado
 
Les,
It didn't take you long to learn how to nurse it along and make it there and
back somehow. You're now a full fledged GMCer.

A while back there was a long discussion here about vapor lock. I think the
consensus was that a stock fuel system in good repair won't have vapor lock
problems. That being said, you are operating at some pretty high altitudes
but you have an auxiliary boost pump. Some other possibilities are a
clogged vent system (does vapor lock go away with gas cap removed?),
deteriorated gas lines from the tank to the boost pump (will it run better
if you switch tanks?) or even the fuel filter partly clogged. The argument
can be made that none of these apply because it only happens when it is hot
outside. The counter to that is the steel gas line may vapor lock at high
temperature with 1 lb pressure but not with 5 lbs pressure. At any rate
these things are worth a check. Also a check of the fuel pressure from the
electric pump could be worth while. HTH. Good luck

Bob McLaughlin
 
I read to the bottom and I loved it....

You might want to change your electric fuel pump and change your mechanical
pump. I had a similar experience and the electric pump was bad. Hard to
check unless you unhook output and watch it pump. Also it might be failing
under heat. You might want to run the electric pump all the time not just
when the system is in trouble.

I think there is a good chance that something else is wrong like the
electric pump. With a good electric pump back by the tanks with a filter
in front of it and a in-line filter in front of the mechanical pump , and
remove the filter on the input to the carburetor you should not have to
insulate the gas line and the other things. Many others get by with out
this .

good luck
gene

>GMCnetters....
>
>Finally arrived home this morning (Saturday) from our first prolonged trip
>in our newly acquired 77 Palm Beach (That Green Thing). 1427 miles in
>12 Days.
>
>We departed Orem, Utah with intentions of stopping at Newspaper Rock
>near Canyon Lands National Park and then on to Mesa Verde prior to
>arriving at the Durango Rally on Friday, the 21st of July.
>
>The Details:
>
>The coach battery had discharged to the point of not turning over the engine
>a few days before departure so I had charged it with a 10 amp charger prior
>to departure. We departed Orem tuesday morning and shut down in Green
>River, Utah for lunch. After lunch, the battery was dead! Started the coach
>generator and charged it enough to start the engine and stopped at an auto
>supply house in Green River and replaced the coach battery with a new one.
>Went on to Newspaper Rock and spent the night dry camping.
>
>Next day (Wed 19th) we toured Canyon Lands National Park and headed for
>Mesa Verde. Paid for two nights (19th & 20th) and found a camping spot in
>the park. The brand new coach battery was DEAD! We had hookups so I
>charged the new battery for about 8 hours, then started the engine and removed
>the positive battery lead to see if the alternator was working. The
>engine didn't
>die so I assumed the alternator was ok.
>
>Thursday (20th) toured Mesa Verde. Started engine with battery and then
>disconnected it so it wouldn't discharge and ran on the Alternator. Each
>stop I
>would reconnect the battery to start and then disconnect. In the afternoon,
>a fire started in Mesa Verde and the park was evacuated! We lost one night
>of camping fees and we showed up at United Campground for the Mountainaire
>Rally one day early in Durango. The first person I met upon stepping out
>of the
>coach upon arrival was Jerry Hoxsey. Arrangements were made to camp an extra
>night. Several other coaches were already there and we were most graciously
>welcomed.
>
>Friday (21st) was normal check in day. I discussed my battery problem
>with Jerry and
>others and it was suggested that I check the alternator voltage
>output. Upon doing
>so, I found only 12 volt output instead of the 14 to 15 needed to keep the
>battery
>charged. Something was wrong with the alternator! After more discussions,
>suggestions were made as to what might be the problem. Many other coaches
>arrived and a very nice pot luck dinner and get acquainted social was
>enjoyed by
>all that evening.
>
>Early Saturday (22nd) morning prior to the scheduled activities, I checked
>some of the
>suggestions and decided to tighten the belt to the alternator to see if
>that would
>help. I crawled under the coach and while loosing the adjusting nut,
>managed to
>cut my arm on a nearby sharp edge. My wife applied a bandage with some
>comments about my aptitude with tools and I finished tightening the
>belt. I started
>the engine and checked the alternator voltage.....14
>volts.....Fixed!!!! Now that
>the GMC has drawn blood, I feel like I belong to the GMC community. Rally
>activities included a catered breakfast, safety bull session, coach tours,
>and meeting
>many great GMC couples. A good time was had by all. Evening activities
>included
>a bar-b-que dinner and show at the Bar D Ranch. A terrific activity.
>
>
>Sunday (23rd) started with a continental breakfast and much visiting. It
>was also departure
>day for some but since we had tickets for the train the next day,
>arrangements were
>made to stay two extra nights until Tuesday morning. Jim & Ottilie
>Anstett and others
>were kind enough to show us their coaches and some of their
>modifications. Jim had
>me try out his brakes to show how well they worked.....very impressive. I
>think he has
>a gauge of some kind for every function in his coach. We were
>impressed. He was most
>helpful explaining his numerous modifications. Emery Stora spent the
>evening explaining
>some of the system functions in my coach and showed me some of his
>modifications.
>I now have a long list of things I wish to do to improve my coach.
>
>Monday (24th)....all day on the Durango-Silverton Historic Railroad. A
>great time!
>
>Tuesday (25th), we departed Durango headed for Longmont where my daughter
>lives.
>A very hot day! Climbing Wolf Creek Pass east of Durango, the steel gas line
>would try to vapor lock even with the electric fuel pump running. We got
>about two
>thirds of the way up the pass and had to pull over to let the gas line
>cool. After about
>a half hour, started up and made it over the pass. Stopped for the eveing
>at the
>Royal Gorge and after sightseeing, stayed at the local KOA campground.
>
>Wednesday (26th) and Thursday (27th) visited with my daughter in Longmont
>Colorado.
>
>Friday (28th) departed with intentions of returning home by way of
>Interstate 80 across
>Wyoming. Another hot day. Several times on uphill grades, the old
>vaporlock problem
>would require us to pull over to cool down prior to continuing. Lunch at
>the flying J in
>Rawlins, Wyoming. Hot afternoon. The gas line would work only for about
>20 to 30
>minutes before the engine would again start to surge and we would have to
>fine a place
>to stop to cool down. Took until 5PM to make it to Rock Springs. After
>dinner, we
>decided to spend the night at the Flying J in Rock Springs, but all the
>truckers had
>the same idea and it was way too noisy. We departed after sundown and
>spent the
>night at the Wal Mart in Evanston, Wyoming.
>
>Saturday (29th) (Today) Departed Evanston at 6AM to avoid the
>heat. Arrived home in
>Orem, Utah about 8AM. No vaporlock problem as it was cool all the
>way. Nice to be
>home. A great trip and a real adventure dealing with all the GMC quirks
>and the Mesa
>Verde Evacuation.
>
>Reflections:
>
>The battery problem was fixed by tightening the alternator belt. No more
>problems.
>The steel gas line doesn't like hot weather. Even with the electric fuel
>pump on and
>the fan cluch working, the heat would cause engine surging and loss of
>power. I need
>to find a way to keep the gas line cool.
>Perhaps blocking the exhaust manifold crossover, insulating the line
>itself or rerouting
>it. Perhaps ram air to the back of the engine compartment similar to
>Emery Stora's
>and venting the wheel wells to remove excess heat. Perhaps insulate the
>bottom of
>the gas tanks.........Any suggestions would be most appreciated.
>
>GMCs spotted during trip.
>
>Tuesday (18th) a repainted coach westbound in Interstate 70 east of Green
>River, Utah
>and also a north bound coach north of Moab Utah. Two in one day....both
>waved and
>blinked their headlights.
>
>Tuesday (25th) a white with blue stripe coach for sale on the south side
>of the highway
>about 10 miles east of Durango in a dealer's lot.
>
>Friday (28th) A Palm Beach just north of Fort Collins, heading into
>town...Waived.
>
>Saturday (29th) A coach for sale just north of Heber Utah sitting in a field.
>
>If you read to the bottom of this......you need to find something else to do!
>
>Thanks to all......
>
>Les & Sharon Watson
>Orem, Utah
>77 Palm Beach (that likes it cool)
>
>
>

Genef -- 77PB/ore/ca
GMC MOTORHOME INFORMATION
mr.erf
http://www.california.com/~eagle/ http://www.california.com/~eagle/
 
>Les,
>It didn't take you long to learn how to nurse it along and make it there and
>back somehow. You're now a full fledged GMCer.
>
> Some other possibilities are a
>clogged vent system (does vapor lock go away with gas cap removed?),
>deteriorated gas lines from the tank to the boost pump (will it run better
>if you switch tanks?) or even the fuel filter partly clogged.
Bob McLaughlin

Bob.....

Spent the day working on "That Green Thing" as my wife calls it.
I removed and replaced my Battery Boost solenoid so the switch
now works. (cool in the morning.)

I got out the parts manual as I have no maintenance manuals and
tried to determine how to check the vent system. (Not much luck).
I finally decided to drive it up a canyon near my place. I kept the
electric fuel pump off until it started to surge and then turned it on
and pulled over the side of the road and removed the gas cap.
No Swoosh! turned off the electric pump and started up hill again.
surged again so back on with the electric pump.....no change....
I forgot to try the aux tank.

After I returned home, I opened the engine cover (not smart as all
the heat filled the coach and it was over 100 outside by then.
I tried to examine the mechanical fuel pump in the heat but didn't
have much luck. I decided to take the wheel liner out of the
passenger side to see if I could get a better look but couldn't
get it out as one bolt in the top of the liner refused to come out.
It just turned and I couldn't get to the other side of the liner
because of the heat.....I'll wait for tomorrow when it's cool and
try again.

Enough for today

Les
Orem Utah
77 Palm Beach (likes it cool)
(so do I)