Car has to be primed twice to start
Thread Starter
TECH Senior Member
iTrader: (21)
Joined: Jun 2004
Posts: 6,697
Likes: 2
From: Jacksonville, FL
Car has to be primed twice to start 103k miles, most likely stock pump. Car will almost never start first prime. I must prime 2 seconds then off, then prime again, and start. It starts right up every time that way. Didn't want to pay the $45 for a fuel pressure tester just to find out I need a new pump, so I opted to try a different, more vague, approach.
I turned the car on and let it prime once, then took the fuel rail cap off, waited about 5 minutes and then pushed in the schrader valve with a screwdriver behind a rag. No gasoline on the rag whatsoever. Second try I prime the pump again and within 5-10 seconds do the same procedure. It barely trickled gasoline on the rag.
Did some searching and it seems the regulator or check valve is bad, or I have a leak in the line. Either way I ordered a new racetronix pump with the harness. Figure if this doesn't solve the problem I at least have a better pump which couldn't hurt. I'd have to trap door/drop the tank anyhow to troublshoot and if I'm going through that much trouble might as well replace the pump.
Any input/advice?
Thanks guys!
I turned the car on and let it prime once, then took the fuel rail cap off, waited about 5 minutes and then pushed in the schrader valve with a screwdriver behind a rag. No gasoline on the rag whatsoever. Second try I prime the pump again and within 5-10 seconds do the same procedure. It barely trickled gasoline on the rag.
Did some searching and it seems the regulator or check valve is bad, or I have a leak in the line. Either way I ordered a new racetronix pump with the harness. Figure if this doesn't solve the problem I at least have a better pump which couldn't hurt. I'd have to trap door/drop the tank anyhow to troublshoot and if I'm going through that much trouble might as well replace the pump.
Any input/advice?
Thanks guys!
Mine does the same thing. There's a check valve that bleeds the pressure off somewhere, and mine gave up at 125k miles. I checked pressure, and I have 60 psi as long as the car is running, but it bleeds off in 2-3 seconds after the pump shuts off.
I have a mechanic that says the valve is in the tank, and I took him at his word on this one.
I have a mechanic that says the valve is in the tank, and I took him at his word on this one.
Thread Starter
TECH Senior Member
iTrader: (21)
Joined: Jun 2004
Posts: 6,697
Likes: 2
From: Jacksonville, FL
Mine does the same thing. There's a check valve that bleeds the pressure off somewhere, and mine gave up at 125k miles. I checked pressure, and I have 60 psi as long as the car is running, but it bleeds off in 2-3 seconds after the pump shuts off.
I have a mechanic that says the valve is in the tank, and I took him at his word on this one.
I have a mechanic that says the valve is in the tank, and I took him at his word on this one.
Teching In
Joined: Sep 2011
Posts: 49
Likes: 1
From: western wisconsin
Can a guy get away with installing just the racetronix pump on a '98 and not do the wiring harness? Will the factory system handle the new pump okay? If not, can the new wiring harness be added using the trap door method? 89,000 mi and mine is starting to bleed back quick after prime. Thanks for any info.
Trending Topics
You can do the pump without the harness, but I recommend the harness upgrade. The larger pump draws more current & the factory wiring is marginal. For the extra $49 I would not cut corners.
It will fit using the trap door method, but I still recommend removing the tank to clean everything properly.
You can never be too clean when it comes to fuel delivery.
It will fit using the trap door method, but I still recommend removing the tank to clean everything properly.
You can never be too clean when it comes to fuel delivery.
Last edited by Lonnies Performance; Oct 16, 2011 at 06:38 PM.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Joined: Mar 2002
Posts: 2,032
Likes: 26
From: A Racetronix dealer near you...
__________________
Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
>WEB SITE<
Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
>WEB SITE<
