??? wont fire, but has spark and fuel...

[spanaway mudder]

Iam picking up a clean 90MJ for $300.00 that just plain won't start..I re-timed it and had it checked , changed out coil,distributor,cap/rotor,and checked for fuel pressure and spark (not in that order)...

 

its a manual..is there a nuteral safety switch? my friends changed out the CPS also..

 

4.0,4wd,5spd..

[wallisek]

I love bookmarks and jeep forums. Below is a CPS test procedure .Could be a bad PDC too I guess. Others might have more input, but it sounds like you've replaced the most common at-fault parts.

 

http://www.cherokeeforum.com/showthread.php?p=67282

[mvusse]

Neutral safety switch would cause it to not crank. You say you have fuel and spark, and checked the timing. That would mean it cranks.

 

Broken timing chain, or worn away sprocket?

Be more specific about what exactly it does and does not when you try to start it.

 

How old is the fuel? What do the spark plugs look like?

[spanaway mudder]

Neutral safety switch would cause it to not crank. You say you have fuel and spark, and checked the timing. That would mean it cranks.

 

Broken timing chain, or worn away sprocket?

Be more specific about what exactly it does and does not when you try to start it.

 

How old is the fuel? What do the spark plugs look like?

 

 

Good point..Iam going to stop by where its at this week to dump some fresh fuel in it, the spark plugs looked decent..

 

it turns over...thats it...