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1991 Grand Prix, flooding..HELP ME!!!
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sargerock
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Sep 11, 2009, 4:54 AM
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1991 Grand Prix, flooding..HELP ME!!!
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1991 grand Prix with 80k miles fuel inj model 3.1 multiport efi
ok first I had to replace the fuel pump inside gas tank because it was bad. I didn't use car for months because I didnt need it right away. But I would start it and let it run a bit every now n then just to keep things "in check".
Well yesterday after driving the car for about 1 hour and parking it, it would not start, turns over fine but acting like no fuel. When I removed the rubber breather that goes to the air filter it had a LOT of gas inside the tube.....over flooding I would imagine, question is, what do I check or what could be the problem???
thanks
Greg
(This post was edited by sargerock on Sep 11, 2009, 5:01 AM)
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Sep 11, 2009, 7:04 AM
Post #2 of 9
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Re: 1991 Grand Prix, flooding..HELP ME!!!
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Carefull if a lot of fuel around but next is to check for spark. Might just be something stupid that got wet while sitting so long,
T
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sargerock
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Sep 11, 2009, 8:05 AM
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Re: 1991 Grand Prix, flooding..HELP ME!!!
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fuel only accumulates when i turn on key and pump gas...alopt of fuel......like 2-3 ounces
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Tom Greenleaf
Ultimate Carjunky
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Sep 11, 2009, 8:50 AM
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Re: 1991 Grand Prix, flooding..HELP ME!!!
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This should be fuel injected and pumping does nothing to add fuel! Carbs did that back when.
Ok- find out what the spark situation is. Some fuel would be available even if injected for start up and again - be careful - put all parts back (air intake) and have extinguishers at the ready,
T
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sargerock
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Sep 12, 2009, 9:35 AM
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Re: 1991 Grand Prix, flooding..HELP ME!!!
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right, when i open choke from engine after having key on and hearing ele fuel pumop....gas is dripping from manifold, when i open it manually....gas pours out, alot like 2 or so ounces..
thanks
greg
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Tom Greenleaf
Ultimate Carjunky
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Sep 12, 2009, 10:08 AM
Post #6 of 9
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Re: 1991 Grand Prix, flooding..HELP ME!!!
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No choke on this sport! It's fuel injected. They may leak but some old choke tricks mean near nothing on this,
T
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Guest
Anonymous Poster
Sep 12, 2009, 10:14 AM
Post #7 of 9
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Re: 1991 Grand Prix, flooding..HELP ME!!!
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what would make so much gas emit into the intake?
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Tom Greenleaf
Ultimate Carjunky
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Sep 12, 2009, 11:22 AM
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Re: 1991 Grand Prix, flooding..HELP ME!!!
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Greg,
Perhaps it's time for some pro help. This thing has gas, and spark and doesn't react so chances are compression is the issue - a guess. Could be from a timing problem or not known right now. If low compression timing would be highly suspect,
T
(valve timing is more likely)
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Double J
Veteran
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Sep 12, 2009, 1:30 PM
Post #9 of 9
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Re: 1991 Grand Prix, flooding..HELP ME!!!
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Sounds like a faulty Fuel Pressure Regulator.
Take the vacuum hose off the regulator and see if fuel is present in the hose,if so,replace the Regulator.
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