Can I pressure my L-98 fuel rail with fuel without cranking the engine?
03-31-2012, 07:15 PM
#1
Melting Slicks
Thread Starter
Can I pressure my L-98 fuel rail with fuel without cranking the engine?
I just finished rebuilding the top end on my 88 TPI. Can I turn on the fuel pump on to pressurize the fuel rails to check for leaks without cranking the engine? I attached an Accell fuel pressure gauage to the fuel rail, turned the ignition on and failed to turn on the fuel pump. I got no pressure reading.
03-31-2012, 07:18 PM
#2
Race Director
Turning on the ignition key, the fuel pump should run for 2-3 seconds and pressurize the fuel rail.
03-31-2012, 07:50 PM
#3
Le Mans Master
Member Since: Aug 2000
Location: Sydney Australia
Posts: 8,837
Likes: 0
Received 30 Likes
on
29 Posts
Putting 12 V to terminal G of the ALDL ( key off ) will make the pump run full time
to check for pressure and leaks
The default 2 sec on time is not long enough to do anything
to check for pressure and leaks
The default 2 sec on time is not long enough to do anything
03-31-2012, 08:43 PM
#4
Melting Slicks
Thread Starter
I hear no fuel pump motor when I turn the ignition on and leave it on. The only thing I have messed with is changing the fuel filter and rebuilding the fuel rail along with new injectors.
Before I started working on the motor everything worked perfectly. I did not have a gauge to measure fuel pressuret before I started that my work. So I'am confused. I may have to entergize the computer ADL as said.
Before I started working on the motor everything worked perfectly. I did not have a gauge to measure fuel pressuret before I started that my work. So I'am confused. I may have to entergize the computer ADL as said.
Last edited by HAD2HAV2; 03-31-2012 at 08:45 PM. Reason: new sentence
03-31-2012, 09:47 PM
#7
Maybe at this point in time it is best the injectors are not hooked up. You don't want raw fuel in the cylinders. As suggested apply 12V to terminal G of the ALDL plug.
