Do I need a new fuel pump?
Thread Starter
Drifting
Joined: Jan 2004
Posts: 1,255
Likes: 4
From: Holliston MA
Do I need a new fuel pump?
I have an 02 Z06 with a Magnacharger, 42 lbs injectors.
Recently I noticed a "skipping" sensation under heavy acceleration. During heavy acceleration my fuel pressure drops from 58#'s to 50 - 52 #'s.
I am assuming my fuel pump is on its last legs. I purchased the car with the magnacharger already installed so I am not sure it has an aftermarket pump.
The car has 25k miles, I would think the fuel filter is still good.
Any advice on tests to run against the pump or should I be worried about something else?
Thanks
Recently I noticed a "skipping" sensation under heavy acceleration. During heavy acceleration my fuel pressure drops from 58#'s to 50 - 52 #'s.
I am assuming my fuel pump is on its last legs. I purchased the car with the magnacharger already installed so I am not sure it has an aftermarket pump.
The car has 25k miles, I would think the fuel filter is still good.
Any advice on tests to run against the pump or should I be worried about something else?
Thanks
Tech Contributor
Joined: May 2008
Posts: 2,843
Likes: 16
From: Howell Michigan
St. Jude Donor '09-'10-'11
Drifting
Joined: Jan 2008
Posts: 1,722
Likes: 138
From: Florida
St. Jude Donor '09
Do you have a wide band O2 sensor and meter? I would check the F/A ratio at WOT before making a determination that 50 -52 PSIG is too low for your application.
In 02 I believe the fuel pressure regulator was integral with the filter.
In 02 I believe the fuel pressure regulator was integral with the filter.
Thread Starter
Drifting
Joined: Jan 2004
Posts: 1,255
Likes: 4
From: Holliston MA
I figured out the problem thanks to my tuner Slowhawk. I told him the symptoms and he said it sounds like a bad plug or wire. Well I just got down swapping out the plugs and one of them had 3 hair line cracks. Anyway the problem is gone.
