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Fuel pressure regulator issues

Fuel pressure regulator issues

Postby Champagne99 [OP] » Jan 31 2012, 3:53pm

Good morning, Im new to here, and i have a 99 silverado with a 5.3 with 251k miles on it. I have all the symptoms of a bad fuel pressure regulator except my check engine light doesnt come on. Sometimes when i start it i have to pump it a few times to get it to run and then it runs at like 500 rpms and misfires, and if i try to take off the misfires get worse. If i let it sit and run for a few minutes its goes away and drives fine, until i have to start it again. Its a stock truck, no performance add ons, i have it serviced regularly. Any help would be appreciated
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Re: Fuel pressure regulator issues

Postby adams99z71 » Jan 31 2012, 10:16pm

i didnt have a SES light on when my fuel pressure regulator went south. locate the regualor on the driver side fuel rail, pull the vacuum line and if fuel spills out then you know its bad. if i remember right, the regulator is about 25bucks at napa auto parts. takes all of 20minutes to switch them out.
nbs99 z71 325ci v8, stock 4wheel disc brakes, no cats, flow master classic 40 series, rhino line, custom fog lights, cb, bully dog tunner, 4:10 locker, airbag load leveling, 205,000miles.
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Re: Fuel pressure regulator issues

Postby Champagne99 [OP] » Jan 31 2012, 10:58pm

I pulled the vacuum line off and it was dry, but then i turned the key on and gas was spilling out of the regulator, so i replaced the regulator, primed it and then started it. It fired right up with no hesitation
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Re: Fuel pressure regulator issues

Postby adams99z71 » Feb 03 2012, 5:52am

glad to hear you got her fixed.
nbs99 z71 325ci v8, stock 4wheel disc brakes, no cats, flow master classic 40 series, rhino line, custom fog lights, cb, bully dog tunner, 4:10 locker, airbag load leveling, 205,000miles.
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Re: Fuel pressure regulator issues

Postby ASTE25 » Feb 03 2012, 9:10am

I'd say it was definatly bad. Good that you got it fixed. Your fuel mileage should increase too.
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