Fuel Pressure Regulator Advice..
Thread Starter
Racer
Joined: Jul 2004
Posts: 389
Likes: 2
From: Howard Beach, NY
Fuel Pressure Regulator Advice..
Just picked up an '87 Corvette
The car had a miss under just before I got the car, the previous owner took it to a Corvette place out on long island and the guy unplugged the pressure regulator and the miss went away. The car seems to drive ok but is down on power
the car has a mild cam, little head work, and dual exhaust.. should I replace the stock regulator with an adjustable one and bump the fuel pressure up to like 45psi?
and is the fuel pressure set w/ the vacuum line disconnected?
The car had a miss under just before I got the car, the previous owner took it to a Corvette place out on long island and the guy unplugged the pressure regulator and the miss went away. The car seems to drive ok but is down on power
the car has a mild cam, little head work, and dual exhaust.. should I replace the stock regulator with an adjustable one and bump the fuel pressure up to like 45psi?
and is the fuel pressure set w/ the vacuum line disconnected?
Burning Brakes
Joined: Feb 2009
Posts: 785
Likes: 3
From: Richmond Virginia
Just picked up an '87 Corvette
The car had a miss under just before I got the car, the previous owner took it to a Corvette place out on long island and the guy unplugged the pressure regulator and the miss went away. The car seems to drive ok but is down on power
the car has a mild cam, little head work, and dual exhaust.. should I replace the stock regulator with an adjustable one and bump the fuel pressure up to like 45psi?
and is the fuel pressure set w/ the vacuum line disconnected?
The car had a miss under just before I got the car, the previous owner took it to a Corvette place out on long island and the guy unplugged the pressure regulator and the miss went away. The car seems to drive ok but is down on power
the car has a mild cam, little head work, and dual exhaust.. should I replace the stock regulator with an adjustable one and bump the fuel pressure up to like 45psi?
and is the fuel pressure set w/ the vacuum line disconnected?
Melting Slicks
Joined: Mar 2008
Posts: 2,141
Likes: 76
From: Santa Maria, CA
I believe your stock injectors are 22#. Talk to Jon at FIC about what size to use with your setup. An adjustable regulator is a decent investment. Set the pressure at idle with the vacuum disconnected and plugged. I run my 85 with 24# injectors @ 47 psi. Seems to like it there.
Thread Starter
Racer
Joined: Jul 2004
Posts: 389
Likes: 2
From: Howard Beach, NY
The fuel pressure goes from 40 to 0 in under 2 minutes...
Just pulled the regulator - no rips in the diaphragm or anything
could it be the fuel pump or pulsator? or should i look at the injectors?
if i pinch off the return line with some vise grips near the tank, will that isolate injectors vs fuel pump check valve or pulsator? was that the front or back hose near the gas cap?
Just pulled the regulator - no rips in the diaphragm or anything
could it be the fuel pump or pulsator? or should i look at the injectors?
if i pinch off the return line with some vise grips near the tank, will that isolate injectors vs fuel pump check valve or pulsator? was that the front or back hose near the gas cap?
Last edited by DrEvil11417; Nov 1, 2009 at 03:41 PM.
