Question: Fuel Pressure

[Gobbles]

I'm about the check my fuel pressure at the rail this weekend and am curious what I should see. I have a 90 vette (non ZR-1) with the L98 motor. Thanks for the help.


Tim

 

[Hib Halverson]

What you should see is the range of fuel pressure and pressure behavior specified in the 90 FSM.

Readings which differ significantly from what the manual says will be covered in the diagnosis instructions in the section under "fuel pressure tests".

 

[Dougs91]

Gobbles, Hib's right,but for a baseline you should see 40-45psi at the rail with the key on.

 

[Gobbles]

Is that with the engine started or just the key in the on position?

 

[rmagee7]

i know im gonna stick my mouse in my mouth but i thought the last year they bilt the L98 was in 89? thouht 90 was the first year for the LT1??

 

[Dougs91]

Gobbles, that's with the key on,no start.

 

[Dougs91]

91 was the last year of the L-98. The LT1 was started in 92