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Fuel pressure regulator vacuum leaking gas.

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Old Jul 18, 2020 | 07:07 PM
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Fuel pressure regulator vacuum leaking gas.

Ok guys so this has been an issue with my car for a while now. Car has hard start, need to floor accelerator to start. Now car dies out while in gear. Also white smoke from tail pipes that smell like pure gasoline. So I think I found the issue, fuel pressure regulator is leaking gas from vacuum line. I’m just curious will bad injectors cause the fuel pressure regulator to go bad. Or do you think this could be my main culprit?
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Old Jul 18, 2020 | 07:57 PM
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GeneralDisorder's Avatar
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From: Portland, OR
Car: 86 Imponte Ruiner 450GT, 91 Formula
Engine: 350 Vortec, FIRST TPI, 325 RWHP
Transmission: 700R4 3000 stall.
Axle/Gears: 9 Bolt Torsen 3.70
Re: Fuel pressure regulator vacuum leaking gas.

Injectors have no effect. The regulator diaphragm is shot.

GD
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Old Jul 18, 2020 | 08:09 PM
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Re: Fuel pressure regulator vacuum leaking gas.

Will be replacing this week! Man I really hope this fixes my issue
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Old Jul 20, 2020 | 03:22 AM
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From: Los Angeles
Car: 92 Z28 Clone
Engine: Vortec 350
Transmission: T-56
Axle/Gears: 3.23 Torsen
Re: Fuel pressure regulator vacuum leaking gas.

Originally Posted by Ironmike77
Will be replacing this week! Man I really hope this fixes my issue
It will don't worry.
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Old Jul 20, 2020 | 08:26 AM
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Re: Fuel pressure regulator vacuum leaking gas.

Should I replace the injectors while I’m at it? Since I have to take off part of the intake anyways. Engine has 156k on it.
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Old Jul 20, 2020 | 12:58 PM
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From: Los Angeles
Car: 92 Z28 Clone
Engine: Vortec 350
Transmission: T-56
Axle/Gears: 3.23 Torsen
Re: Fuel pressure regulator vacuum leaking gas.

Originally Posted by Ironmike77
Should I replace the injectors while I’m at it? Since I have to take off part of the intake anyways. Engine has 156k on it.

With 156k on the clock I wouldn't bother swapping out the injectors(unless they are delphis). The fuel pressure regulator leaking is a common issue. Swap it out and be done.
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Old Jul 20, 2020 | 01:12 PM
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Re: Fuel pressure regulator vacuum leaking gas.

Yeah that’s what I had figured. I don’t want to put too much money into the engine. Because I do plan swapping it in the next couple of years. But will do the regulator this week. I’m actually excited to fix it. The car has been running like crap for quite some time. And could never pinpoint it, until I registered on this site. And everyone has been really helpful.
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