Fuel pressure issue
Thread Starter
TECH Enthusiast
Joined: Aug 2005
Posts: 672
Likes: 3
From: Washington Crossing, PA
Fuel pressure issue Had the car (procharged ls1) out for the first time this season and noticed the fuel pressure seemed off some. Racetronix 255 hot wire and 60's. Pressure before would always be around 61-62 dropping off by a couple at the very top. Now it would be around 55-60 and then randomly drop to like 48-49 but then bounce back and fourth pretty quickly while driving normal or getting on it some. I'm going to try changing fuel filters as that's cheap to try but I know its only has about 4-5000 on it. Any ideas?
may have a pinhole on the line from the pump to the top of the sending unit.
or depending on your regulator the diaphragm may be failing.
unless you have a low micron filter, clogging it to that degree probably wouldnt happen.
I had a similar issue with mine last year where the line off the fuel pump popped off and would flow fuel but once it started building any pressure from the reg it would pop and i could never build over 20 psi at the reg, I took the reg apart, replaced my fuel filter and finally got my head out of my *** and pulled the sending unit, and there it was staring me in the face.
or depending on your regulator the diaphragm may be failing.
unless you have a low micron filter, clogging it to that degree probably wouldnt happen.
I had a similar issue with mine last year where the line off the fuel pump popped off and would flow fuel but once it started building any pressure from the reg it would pop and i could never build over 20 psi at the reg, I took the reg apart, replaced my fuel filter and finally got my head out of my *** and pulled the sending unit, and there it was staring me in the face.
