You probably all knew this was coming-no start.

[adam metzger]

Hey all-

Put 7 gallons on the coach. No start.

Getting fuel in the carb when I push the throttle.

Getting spark from at least one plug.

I did put some liquid fuel in the carb before initial crank because I thought it would help while fuel was traveling through the lines.

I did add subsequent liquid fuel once I saw fuel squirt from the carb, engine runs on fuel put into carb.

Did I flood it?

Plugs are not wet, turnover sounds normal, not sped up. (I don't think fuel got into the cylinders)

--
1976 Palm Beach
Austin, TX

 

[johnny]

Unlikely you flooded it, more likely fuel starved. When you say fuel at the carb, you should have two steady streams as the throttle is opened, not
just bubble and spit. If the carb filter isn't new, (carefully) put a new one.

--johnny

--
'76 23' transmode Norris upfit, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"The road goes on forever, and the party never ends" --Robert Earl Keen

 

[johnny]

Lemme also note, on my 23', with the choke set slightly lean, it was necessary to dance on the accelerator four or five times and then spin it and it
would catch. Yu >can< flood one, but you really have to work at it.

--johnny

--
'76 23' transmode Norris upfit, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"The road goes on forever, and the party never ends" --Robert Earl Keen

 

[Ken H.]

Adam,

In addition to the other, correct, suggestions; If the 7 gallons is ALL
the gas tanks contain, you may not have enough gas to keep the engine
running. No matter what you hear about the first gas running into either
tank, some of it is almost certain to run to the other one. So, you may
have only 3.5 gal. in each tank. Add to that the fact that the pickups are
seldom right at the bottom of the tank and you may have access to well
under the advertised 52 gallons. I've run out of gas and been unable to
put in more than 40 gallons.

I'd put another 10 gallons in there before getting very excited.

Oh yeah, no one has mentioned the ignition timing -- has that been
disturbed since the engine last ran?

Ken H.

On Thu, Mar 2, 2017 at 2:09 PM, Johnny Bridges via Gmclist <

> Lemme also note, on my 23', with the choke set slightly lean, it was
> necessary to dance on the accelerator four or five times and then spin it
> and it
> would catch. Yu >can< flood one, but you really have to work at it.
>
> --johnny
>
> --
> '76 23' transmode Norris upfit, 76 26' Eleganza(?) with beaucoup mods and
> add - ons.
> Braselton, Ga.
> "The road goes on forever, and the party never ends" --Robert Earl Keen
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

 

[Matt Colie]

Adam,

You say no start, but did it even bang once?

Johnny and Ken have you on the right track.

Just a little experience here, if you are pouring (any rate at all) wet fuel into the carburetor, close the air filter housing at least one thread
before cranking. If something happens to light the fuel in the manifold, things can get very exciting very fast.

Matt
--
Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Still Loving OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Twixt A2 and Detroit

 

[LQQKatJon]

hook a timing light up. easy way to verify that spark is happening.... all the time. I zip tie the trigger on the timing light so I can see it
flash.

if the plugs are dry, I doubt you flooded it, it takes plenty of gas to do that.

--
Jon Roche
75 palm beach
St. Cloud, MN
http://lqqkatjon.blogspot.com/

 

[johnny]

Oh yeah - if you get a fire going in the carb due to pouring gas into a backfire, the proper procedure is, hold it wide open and crank away. It will
suck the fide down and stop it. I learnt this on a B engined Mopar with the original long rams, where the tubes run uphill for a bit. Total firebug
that toy was.

--johnny

--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased

 

[Bruce Hart]

I have a friend that has several cars that he stores and starts them up
once or twice a year.
He will pour gas on top of the air cleaner and let it drip down into the
carb. if it back fires

On Thu, Mar 2, 2017 at 2:49 PM, Johnny Bridges via Gmclist <

> Oh yeah - if you get a fire going in the carb due to pouring gas into a
> backfire, the proper procedure is, hold it wide open and crank away. It
> will
> suck the fide down and stop it. I learnt this on a B engined Mopar with
> the original long rams, where the tubes run uphill for a bit. Total firebug
> that toy was.
>
> --johnny
>
> --
> 76 26' Eleganza(?) with beaucoup mods and add - ons.
> Braselton, Ga.
> "I forgive them all, save those who hurt the dogs. They must answer to me
> in hell" - ol Andy, paraphrased
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class

 

[adam metzger]

Hey everyone-

An update.

I let the coach sit for couple hours and tried again. After cranking for a bit, she finally roared to life!

My fuel system replacement project is (nearly) complete.

Primed and painted tanks
Hard lines on top of tanks with compression fittings
Rebuilt fuel sending units
All soft line replaced with gates barrier hose.
A second hard vent line, T'd high under the drivers seat.
New tank selector valve
Repaired fuel vapor separator

I let it run for about 15 minutes with no issues. It actually runs better, less loping.
It's amazing what no cracks and splits along with no pinched or flattened sections can do for a fuel system!
I guess not sucking air and being able to vent are kinda important.

Even my fuel gauge registered the difference between the main and aux tank levels with only 7 gallons.

I want to thank everyone on this forum for taking the time to answer questions and help.

We're really looking forward to a couple summer trips. But first, to the car wash!!

--
1976 Palm Beach
Austin, TX

 

[adam metzger]

Hi Larry-

Do a search on this site and the photo site for key words like fuel line, fuel tank, etc. take some time to dig into the topics that come up, and you
will find a plethora of really good info. (My first thread was fuel line fail...might be a good place to start.)

The folks on this site are well versed on this project, as it seems to be one that everyone does eventually. They're also really knowledgeable and
willing to help.

As to my tanks, I had a bad fuel spilling issue on our very first trip, so I decided to re do the entire system. I learned everything I needed to know
by reading a lot, looking at pics, and asking a bunch of questions.

I had no less than three flattened hoses above my tanks, one of which was also cracked all the way through. Not only is it a fuel supply issue, but a
venting issue while filling and driving. It's not terribly difficult, but it was time consuming for me because I went full bore into even rebuilding
my sending units, and working solo with only one day a week to work at best, it took a bit.

I used poly armour line on top of the tanks so that no crushing or breaking would occur under my watch. I used brass compression fittings. You'll get
a number of options and opinions from the crew here, just choose what's right for you.

I'd be happy to help with any specific questions you have. You can pm me or post here.

--
1976 Palm Beach
Austin, TX