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Re: IF I don't start the van every few days, I must add gas to the carburator ?
Puzzele #727136 August 23rd 2017 3:41 pm
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Yes they have TBI ... so I guess I added to a carb thread ?


SUNSHINE VANS-VAN DIEGO
ADRENALIN BY THE GALLON & CHASIN RACIN
ONE FOR THE DIRT & ONE FOR THE STREETS
'93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB
'92 CHEVY G30 454 BEAUVILLE EXT 146" WB
Re: IF I don't start the van every few days, I must add gas to the carburator ?
Puzzele #727137 August 23rd 2017 4:14 pm
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Yeah, this thread is all about hard starting on a carbed vehicle after it has sat for a few days. Easy starting is one of the great benefits of fuel injection.


Windows- they're what make a van worth owning!
Re: IF I don't start the van every few days, I must add gas to the carburator ?
Puzzele #727283 August 29th 2017 5:41 pm
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pooh-bah
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pooh-bah
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Is this still equipped with the original Rochester Quadrajet carb? Not sure? Post a picture of it the next time you have the cover off.

Re: IF I don't start the van every few days, I must add gas to the carburator ?
Puzzele #740265 September 09th 2018 11:45 pm
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I have this hard starting problem. I had the Quad jet rebuilt, he fixed several problems, drilled out the choke and replaced the rod. Sealed the bottom from leaking, replaced all the parts in it.
Still really hard to start.
I suspect the cannesters could be plugged or even the lines could be cut that run to it.
My thoughts are to run an electric pump with a switch. Turn it on let it fill the bowl , start engine and turn it off to run.
Any thoughts on doing it this way? Will it work?.
My 1947 BeechCraft Bonanza had a hand pump 3 to 5 pumps then start slowly pump while starting till the engine pump caught up then secure hand pump. Worked perfectly.




Last edited by Jerry_XtraVanTastic; November 24th 2019 3:26 pm.
Re: IF I don't start the van every few days, I must add gas to the carburator ?
Puzzele #740384 September 14th 2018 8:36 pm
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How does it run when it finally starts,lots of things could cause this problem,what is the quadrajet on?.Have you got an old purge canister hooked up to the float bowl,if so disconnect the line at the float bowl.
The only other thing I feel it could be is the choke is junk and misadjusted, possibly a very low float level


When in doubt..get the sawzall out..
Re: IF I don't start the van every few days, I must add gas to the carburator ?
Puzzele #740385 September 14th 2018 8:43 pm
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Did he put an accelerator pump in it? Or leave the plunger off,you should never have to prime a q jet..the fuel from the bowl is going somewhere,after reading your post again I am leaning toward an accelerator pump


When in doubt..get the sawzall out..
Re: IF I don't start the van every few days, I must add gas to the carburator ?
Puzzele #740404 September 15th 2018 9:50 am
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Originally Posted by Puzzele
Here is the situation:

2. The fuel pump is brand new and seems to work great.


It can be more involved than that. A mechanical pump has a one way valve that prevents fuel from draining backward. I just had this problem on one of my projects. The fuel pump was almost new but when you blow through the outlet you can feel the air passing in reverse. Not a lot but that teeny bit was all it needed to cause a problem when sitting more than two days. I got another new pump from the parts store and tested it. Stopped up tight. No more long crank time trying to get fuel up to the carburetor.

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