lt1 wont fire

**dirttrax** · 04-11-2009, 12:07 PM

I hope someone here can help me out, i hav a 93 model lt1 that wont fire, i changed the ignition module and coil and still nothing. I made sure they both had power, but there is no spark coming from the plug wires or the coil wire. Is there any good way of checking the opti spark or any thing else to check for problems?

when i bought this car the guy told me it had a weak fuel pump and that there was sensor somewhere on the car that would keep it from firing, is this true? i have looked at the wiring diagrams and dont see anything like this.'

any help would be greatly appreciated, thanks in advance.

**suede** · 04-12-2009, 09:42 PM

I would pull the fuel line, turn the key on, pry pour some more gas on it, light a match and you'll have all the fire you could want...

**JoshieDoom** · 04-13-2009, 01:52 AM

Hook a fuel pressure guage to the schrader valve on the fuel rail. See how much pressure its putting out and report back.. most likely its the opti-CRAP

**dirttrax** · 04-13-2009, 03:48 AM

Originally Posted by suede

I would pull the fuel line, turn the key on, pry pour some more gas on it, light a match and you'll have all the fire you could want...

you think? never mind your pic on your profile explains it all!

**dirttrax** · 04-13-2009, 03:48 AM

Originally Posted by JoshieDoom

Hook a fuel pressure guage to the schrader valve on the fuel rail. See how much pressure its putting out and report back.. most likely its the opti-CRAP

k, i will.