lt1 wont start

[toolman162002]

would the fuel pressure regulator effect t any if so is their a way to test it?

[sman]

Not if you have good pressure at the rail. But you didnt answer my question, has it ran and been driven since you did VATS? Its possible that either that is messed up or has come un-done.

[toolman162002]

sry it ran but you couldnt revv it up it acted like it had a misfire or somethin(wasnt right). i double checked my wires in stuff. so i took my opti off to check it. my opti was under warranty so i went and replaced it and installed it and now it runs fine but only with startin fluid. and i did do the vats bypass after the cam install. cuz i wasnt gettin any injector pulse.

[sman]

Your VATS bypass may be causing the problem.

Also, have you attached a noid light and checked to see if you are getting injector pulse?

[2002Z4CSS]

You have a fuel problem for sure.

[toolman162002]

well here's an update i went tautozone and got a noid light and fuel pressure gauge. the noid lights flashs when the motor is cranking over and when i put the gauge on to test the fuel th gauge doesn' read i checked it multiple times leads me to a faulty fuel pump. the pump turns on but no pressure. next question should i spend the money and get an airtrax pump from autozone or is their any others out their that are any good i want a good pump?

[sman]

I would try a fuel filter first.

[hoogiesngrinderz]

Make sure the pressure gauge opens the schrader valve. I usually just pull the valve out whenever I put a gauge on any pressure port.

[meissen]

Yeah I agree. O'Reilly's fuel pressure tester jams the schrader valve in such a way that it won't get any fuel pressure at all unless you remove the valve even though the directions for it says the valve can stay in.

[toolman162002]

i would like to say thanks to every one that helped me out tryin to fix my car i finaly figured it out, a fuel line came off the steel line inside my tank put it back on and she fired right up thanks again!!!!

[hoogiesngrinderz]

Good to hear! With those LT1's it is hard not to get into the nitty gritty details...I have to keep reminding myself that I need to start with the simplest thing and work my way up

[2002Z4CSS]

Glad you got it fixed. I was sure it was a fuel problem.