MJ Comanche Tech. Stock & Modified. MJ (86-92)
All discussion regarding the Jeep Comanche, the pickup truck related to the Cherokee platform.

1991 Comanche crank but won't start.

Old 06-02-2017, 07:42 PM
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Year: 1992.1994
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Engine: 4.0 liter inline 6 "the beast"
Default 1991 Comanche crank but won't start.

Hey guys I just purchased a 91 comanche (won't be picking it up for 2 weeks yet) but I did go look at it today and I was informed that the motor will crank but will not start. It has a new distributor and a new fuel filter and I mean brand new. I just want some heads up on some leads I should follow to track down the issue. My first guess would be CPS but before I go chase anything I would like some other advice. Thanks!
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Old 06-03-2017, 05:03 AM
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Originally Posted by CherokeeHoonigan View Post
Hey guys I just purchased a 91 comanche (won't be picking it up for 2 weeks yet) but I did go look at it today and I was informed that the motor will crank but will not start. It has a new distributor and a new fuel filter and I mean brand new. I just want some heads up on some leads I should follow to track down the issue. My first guess would be CPS but before I go chase anything I would like some other advice. Thanks!
Id check codes first. Then Spark and fuel with pressure confirmation.
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Old 06-03-2017, 03:57 PM
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Has spark and good fuel pressure. I am going to see if the distributor needs adjusted I asked the kid if he checked TDC when he installed it and he said he didn't know what it was so I'm pretty sure that's the issue.
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Old 06-19-2017, 01:38 AM
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Got it running and it has some blow by. It should be good until I get the xj back with the stroker in it then I can start a motor overhaul on the MJ
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