car will turnover but not start
Thread Starter
TECH Apprentice
Joined: Jan 2002
Posts: 347
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From: Orlando
car will turnover but not start Car sat for 2 weeks and i went to start it and it just turnsover. I have a fuel pressure gauge in the car and a return style system. When I turn the key fuel pressure goes to 60 then fades to zero quickly. when cranking fuel pressure does no come back and car wont start. I do not believe it is a security issue light goes out with key and i tried disabling vats in tune.I can force the fuel pump on and have pressure as well. no codes BCM or PCM. I am at a loss! car is a 2001 corvette. any ideas?
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TECH Apprentice
Joined: Jan 2002
Posts: 347
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From: Orlando
well the pcm is obviously not allowing the car to start as it cut the fuel pump and must have cut spark as well. it would be nice if there was a code thrown so i would know where to look... so i am looking for something that will cause this with no code
Thread Starter
TECH Apprentice
Joined: Jan 2002
Posts: 347
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From: Orlando
If your pressure is dropping straight to ZERO after a prime- then you either have a bad pump, a bad regulator, or a big leak in the tank. Probably one of the take lines has a split. GL
edit: Ive seen a failed set of injectors cause none of them to work. Swapped a whole rail with injectors from one car to another and fired right up. But we check all the other stuff first =)
edit: Ive seen a failed set of injectors cause none of them to work. Swapped a whole rail with injectors from one car to another and fired right up. But we check all the other stuff first =)
Last edited by BuffJoeyD; Nov 24, 2012 at 03:24 PM.
Teching In
Joined: Jun 2007
Posts: 20
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From: Arab, AL
If your pressure is dropping straight to ZERO after a prime- then you either have a bad pump, a bad regulator, or a big leak in the tank. Probably one of the take lines has a split. GL
edit: Ive seen a failed set of injectors cause none of them to work. Swapped a whole rail with injectors from one car to another and fired right up. But we check all the other stuff first =)
edit: Ive seen a failed set of injectors cause none of them to work. Swapped a whole rail with injectors from one car to another and fired right up. But we check all the other stuff first =)
Thread Starter
TECH Apprentice
Joined: Jan 2002
Posts: 347
Likes: 0
From: Orlando
pulled the pump and all good there... looking like the regulator. I forced the pump on and got pressure and still wouldnt start im thinking i may have fouled the plugs. so ill get a new set and go from there.
Thread Starter
TECH Apprentice
Joined: Jan 2002
Posts: 347
Likes: 0
From: Orlando
The way this setup works the pump turns on 2 sec then off to build pressure when it goes off pressure drops immediately. I'm going to try a new regulator, hopefully that is it checked everything else but the injectors
