mtulett1

Hi everyone,

'01 GCL 4.0 won't start, it turns over everything sounds good it just wont start. I tried jumping with my XJ to prevent the battery from draining but didn't help.
it ran fine friday and sat all day saturday while it was raining. could it be moisture set in somewhere? or fuel pump, filter ??? any help would be great thanks

Bustedback

Spark and fuel. Got both?

mtulett1

how do I tell if its getting there(fuel) and how do I know If there is spark?

Badmunky

Turn the key on. Listen for the pump. it should run for a few seconds. If you hear nothing get under it near the fuel tank and have some ells turn the key on while you are down there. Be sure key is in the off position first.

If you hear the pump prime then you probably have a spark problem.

dave1123

Depress the schrader valve on the fuel rail. It should spray out if there's fuel pressure. IDK any easy way to check spark with coil packs except by removing one and grounding a terminal with an old spark plug. Check/replace the ASD relay.

Bustedback

Starting fluid will verify if there's spark.

dave1123

Thanks, Busted, You always come up with the easy way.

mtulett1

sorry but i don't understand what you mean by this?

Bustedback

Spray starting fluid into the intake, if the engine starts and runs for a bit, you have spark. If nothing happens, you don't have spark. If you have spark but the engine won't stay running, you fuel issues.

mtulett1

ok i sprayed the starting fluid in the intake and it ran then stopped so i obviously have fuel issues. is there a write up on how to change the fuel filter /pump around anywhere?
thanks again everyone for your help

fletchFL

You will want to check the fuses and relays before you decide to throw a pump at it.

mtulett1

i will do that thanks

mtulett1

can anyone tell me how to drain the pressure and fuel from the rail with out getting fuel everywhere?

Bustedback

It won't be that much fuel.

mtulett1

ok sounds good thanks a lot