not fuel cut but not hesitation either, fuel pump pickup damages? fuel pump going?
11-30-03, 10:43 PM
#1
not fuel cut but not hesitation either, fuel pump pickup damages? fuel pump going?
Searched already and the closest thing is an unresolved post by Fritz Flynn.
MY SYMPTOMS
As I'm at the end of a left turn onto a straight, my car falls flat on its face momentarily as I'm climbing up on boost to 5000 rpm. It happened twice and both times involved a sharp 90 degrees left turn.
I know of the fuel tank surge problem when you're less than 1/4 tank autocrossing. However, I know I'm not pulling 1 g around these 90 deg left turns like the autocrossers (ok, so I did drift the rear wheels a little - real easy when you have -0.9 neg camber fronts and --0.5 camber rears)
It has not happened when I'm on a straight road. In my case, I'm running more than 1/4 tank but less than 1/2 (about 8 gallons left in the tank when I went to filled it up).
With 8 gallons left in the tank, it should not have allowed fuel to slosh away from the pickup on a left turn.
I'm concerned something is wrong with the pickup in the pump. Pump was replaced 15K ago with a high flow ND from SR.
Fuel pump going? pickup damaged?
Anything in the collective database?
MY SYMPTOMS
As I'm at the end of a left turn onto a straight, my car falls flat on its face momentarily as I'm climbing up on boost to 5000 rpm. It happened twice and both times involved a sharp 90 degrees left turn.
I know of the fuel tank surge problem when you're less than 1/4 tank autocrossing. However, I know I'm not pulling 1 g around these 90 deg left turns like the autocrossers (ok, so I did drift the rear wheels a little - real easy when you have -0.9 neg camber fronts and --0.5 camber rears)
It has not happened when I'm on a straight road. In my case, I'm running more than 1/4 tank but less than 1/2 (about 8 gallons left in the tank when I went to filled it up).
With 8 gallons left in the tank, it should not have allowed fuel to slosh away from the pickup on a left turn.
I'm concerned something is wrong with the pickup in the pump. Pump was replaced 15K ago with a high flow ND from SR.
Fuel pump going? pickup damaged?
Anything in the collective database?
11-30-03, 10:57 PM
#2
PV = nRT
Join Date: Jan 2003
Location: New Zealand (was California)
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Worst case: damaged baffle.
Most likely case: FD fuel tank design.
It honestly needs a dedicated surge tank or a fuel cellfor anything less than 3/4 tank.
Most likely case: FD fuel tank design.
It honestly needs a dedicated surge tank or a fuel cellfor anything less than 3/4 tank.
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