Go Figure....
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From: Bryant/Fayetteville, Arkansas
Go Figure.... I swear this car is never gonna run again lol. I finally got it timed decently...and it fires for a split second every now and then. Squirted a little fuel in the TB and it fired up for a second. So I'm thinking im not getting enough fuel. When I turn on my key, my gauge shows a 20 psi for a second, then it falls back to zero pretty quickly. Is this normal? I know it shouldnt be "pulling" fuel till it starts, but I think I should have more pressure than that. I guess I'm just gonna elimate all the factors one by one...I pulled the injectors and I am gonna soak them in injector cleaner overnight...fuel filter tomorrow. Anyone have any other ideas of what it could be?
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From: Bryant/Fayetteville, Arkansas
I think its just all clogged up...hopefully. That might not even be the problem...im just eliminating factors. Theres spark...timing is good enough that it will fire...its like its not getting fuel because when we spray fuel in the TB it burns it right off.
I swear this car is never gonna run again lol. I finally got it timed decently...and it fires for a split second every now and then. Squirted a little fuel in the TB and it fired up for a second. So I'm thinking im not getting enough fuel. When I turn on my key, my gauge shows a 20 psi for a second, then it falls back to zero pretty quickly. Is this normal? I know it shouldnt be "pulling" fuel till it starts, but I think I should have more pressure than that. I guess I'm just gonna elimate all the factors one by one...I pulled the injectors and I am gonna soak them in injector cleaner overnight...fuel filter tomorrow. Anyone have any other ideas of what it could be?
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From: Bryant/Fayetteville, Arkansas
I dunno to be honest lol. Thats next step. The car sat for a year and a half or two with a blown intake gasket. So that means lots of parts that go bad when they sit probably went bad :-(.
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well i'm telling you 20psi while priming is not enough, get that fuel problem fixed and she'll start
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I would also replace the fuel filter... and check the fuel pressure regulator. He did say that it jumps to 20psi but drops down after a sec or so. Then again i always like checkin the cheap parts first
he says it jumps to 20 then drops after the turns the key on position, that means when priming its seeing 20 psi, then when stops priming it drops back to zero. I bet he sees 20 while cranking too.
Well, you have 4 main components in your fuel system:
injectors, filter, pump and regulator.
The filter won't cause it to leak down so quickly, so I would rule that out.
A leaky injector could cause it to leak down like that, but I doubt it would prevent the pressure from building up first.
I would replace the regulator first, it is by far the easier part to replace, and could cause both problems. If that does not fix it, then I would replace the pump, a real pita on our cars.
injectors, filter, pump and regulator.
The filter won't cause it to leak down so quickly, so I would rule that out.
A leaky injector could cause it to leak down like that, but I doubt it would prevent the pressure from building up first.
I would replace the regulator first, it is by far the easier part to replace, and could cause both problems. If that does not fix it, then I would replace the pump, a real pita on our cars.
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From: Decatur, TN (N-W of Athens)
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FWIW, my friends car sat for about 8 months while it was being fully rebuilt. Over those 8 months, a s**tload of moisture found it's way into the tank, and totally gummed up the screen under the fuel pump, and ruined the pump itself. He had the cap off. It would only hit 10lbs of pressure while cranking. Pull your pump and have a look.
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From: Bryant/Fayetteville, Arkansas
Well, what I tried (Soaking the injectors overnight and cleaning the fuel rails plus a new filter) didnt work. Its like it almost starts...but just wont. Something weird about it though is that I am getting gas....One of my injectors didnt seat properly when I put it back in and it was spewin gas everywhere when I tried to crank it so It could be a faulty gauge. How do you drop the tank though? And is the fuel regulator that thing on the passenger side of the intake in the back?
Even at 20 psi, it would spew if the injector failed to seal.
The FPR is at the back of the fuel rails, behind the intake manifold. It has a vacuum tube going to its top, and the fuel lines going in from the driver's side.
Here is one link on how to remove it. http://www.geocities.com/MotorCity/Track/9558/afpr.html
I prefer to remove the fuel rails first, because my hands are just too big to do all the work with them on the car. I couldn't find a link for that one, however.
The procedure for replacing the pump by dropping the tank is documented somewhere, but I did it this way:
http://www.geocities.com/formulapower2/fuelpump.html
My pump died of old age, as did my regulator. The car only has 38k miles on it, but it is 10 years old. Stuff happens.
The FPR is at the back of the fuel rails, behind the intake manifold. It has a vacuum tube going to its top, and the fuel lines going in from the driver's side.
Here is one link on how to remove it. http://www.geocities.com/MotorCity/Track/9558/afpr.html
I prefer to remove the fuel rails first, because my hands are just too big to do all the work with them on the car. I couldn't find a link for that one, however.
The procedure for replacing the pump by dropping the tank is documented somewhere, but I did it this way:
http://www.geocities.com/formulapower2/fuelpump.html
My pump died of old age, as did my regulator. The car only has 38k miles on it, but it is 10 years old. Stuff happens.
at 20 psi your injectors are running like 12#, instead of 24#. Thats why your car acts like it wants to start but wont. The injectors arent getting enough pressure to spray properly.