ZJ 4.0 rebuild, Won't start, has spark, has fuel.
Alright, searched high and low and this topic never seems to get solved so I'll start my own.
1995 zj, just threw in a new motor. Turned her over and she fired up instantly. Ran it for 5-6 seconds and shut her down. Now she won't fire again.
Cranks over, fuel in the cylinder, and gets a good spark.
NOT the Crank position sensor, as it GETS spark and fuel. Unplugged and re connected PCM, relays, etc. also checked all fuses etc.
TIMING is also brought up often, but TDC on cylider 1 matched perfectly with the distributor.
I'm also using the same original "fly wheel". Going to check all grounds, vaccums and connections again. Going to try to dry the cylinders out and use dry/clean plugs.
Will get a code scanner tomorrow, as well get my fuel pressure checked ( high or low; should still burp or attempt to fire)
This has been hell, no idea what too do so please, questions and advice are welcome!!
I HAVE READ ALL TOPICS ON THE SITE HERE AND NONE OF THE METHODS OR IDEAS HAS PROVEN SUCCESSFUL; any ideas???
Last edited by Jared_bc; 02-08-2012 at 11:29 PM.