How do I know if my fuel pump is wearing out?
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Member
Joined: Mar 2001
Posts: 149
Likes: 0
From: Bronx, NY
How do I know if my fuel pump is wearing out?
I'm just curious to know if there is any way to get a good idea what kind of shape my fuel pump is in and if it is wearing or worn out? Thanks.
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87 GTA 350 L98
K&N filter, beefed up TH-700r4, Accel Manifold, Superram, Fuel Press. Regulator 49.5psi, air foil, modified MAF, SLP cold air box, Accel 24lb Injectors, Ed Wright Fastchip custom chip w/160 thermostat, MSD 6AL and Blaster 3, B&M shift kit & megashifter, Moser Ford 9in Rear with Richmond 3.50 and locker, Edlebrock TES headers and Cat Back,Gutted cat, removed emissions, Hotchkis setup in rear, Poly suspension and Koni in the front, relocated MAT, bypassed TB coolant
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87 GTA 350 L98
K&N filter, beefed up TH-700r4, Accel Manifold, Superram, Fuel Press. Regulator 49.5psi, air foil, modified MAF, SLP cold air box, Accel 24lb Injectors, Ed Wright Fastchip custom chip w/160 thermostat, MSD 6AL and Blaster 3, B&M shift kit & megashifter, Moser Ford 9in Rear with Richmond 3.50 and locker, Edlebrock TES headers and Cat Back,Gutted cat, removed emissions, Hotchkis setup in rear, Poly suspension and Koni in the front, relocated MAT, bypassed TB coolant
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Posts: n/a
Put a fuel pressure gauge on it, tape it to the windshield and go out and hammer on it. Have a buddy monitor fuel pressure. If the pressure drops as the revs go up it can't keep up and you need a new one. If the fuel pressure stays fairly constant at WOT then the fuel pump is fine.
Junior Member
Joined: Oct 2000
Posts: 64
Likes: 0
From: Wyoming, MN
Car: '87 Camaro
Engine: L98
Transmission: T5
Axle/Gears: 10 bolt, 3.23 posi.
If it starts to idle rough and or start to die, it could be on its way out. If you don't have loud exhaust, listen for different noises. 
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Brett
'91 Z28 Black
125K,L98,3.23,4L60.
Panhard,LCAs.
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MN F-Body
Brett's House
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Brett
'91 Z28 Black
125K,L98,3.23,4L60.
Panhard,LCAs.
-------------------------
MN F-Body
Brett's House
Senior Member
iTrader: (2)
Joined: Feb 2001
Posts: 938
Likes: 1
From: Hinesville, GA USA
Car: '86 IROC-Z/'94 Z28
Engine: 350 LT1/382 LT1
Transmission: 4L60-E/T-56
Axle/Gears: 3.45/3.42 (soon 4.10)
Noisy, fuel presseure drop off, hard start after replacing fuel pump relay, etc
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