fuel pressure problems...please help!
#1
fuel pressure problems...please help!
I have an 87 Z-28, 305 TPI. fuel pump wasn't working so I replaced it. it ran ok for a couple hours then the pump sounded bad so I replaced it again with an ac delco pump. the new pump sounds ok but it wouldn't stay running and my fuel pressure was only up to 15 lbs. I changed the fuel pump relay, fuel pressure regulator and fuel filter. after changing the regulator a while ago the pressure goes up to 10 lbs. while the pump energizes then drops to zero when the pump stops energizing. I checked for any fuel leaks and can't find any. is there something I overlooked? what's going on with my car? any help will be greatly appreciated. thanks
#2
Supreme Member
iTrader: (9)
is the pump getting a full 12 volts of power. check that. if you get under your car and look up above the rearend you will see a plug with 2 wires going into it. the plug is fastened to the body of the car. just unplug it and put a multimeter to it. check to see if it drops as you turn the key foward
#3
Member
Join Date: Mar 2001
Location: CLIMAX, GA. USA
Posts: 323
Likes: 0
Received 1 Like
on
1 Post
Car: 1972 LT1 Corvette
Engine: 350 HO
Transmission: M22 Heavy Duty 4 Spd
Axle/Gears: 336
1st make sure the guy at the parts house didn't give you a carb fuel pump. 2nd with a pressure gauge connected, take a pair of pliars and clamp the fuel return hose. Pressure should jump up immediately. 3rd get a Walbro fuel pump
Thread
Thread Starter
Forum
Replies
Last Post
R3500
Engine/Drivetrain/Suspension Wanted
1
08-17-2015 12:16 PM
92camaroJoe
Tech / General Engine
6
08-13-2015 06:07 AM