Mitchen
NAXJA Forum User
- Location
- Gresham, OR
88 cherokee 4.0 renix motor rebuilt with 35-40k on it 5 speed.
driving to school today the jeep decided to break, it backfired one big loud pop probably as loud as a small gunshot and shut off and i had to pull over.
it is getting fuel, its getting air, there is exhaust pressure out the tail pipe, had plenty of oil and the temp was fine. it cranks and cranks and cranks but wont start it gives an occasional light backfire pop out the tailpipe.
i put a new cap and rotor on it because they were destroyed and it seemed like a timing issue/not firing on all cylinders but had no luck. checked plugs and its getting spark.
then someone suggested maybe it blew up a piston but i figured i would hear that like the other motors i have seen blow up pistons.
im aiming for broken timing chain/skipped a tooth. and im not excited to fix this if this is what the problem is. i have not dealt with timing chains before.
any ideas on what would be causing this would be appreciated.
Thanks,
Mitch
driving to school today the jeep decided to break, it backfired one big loud pop probably as loud as a small gunshot and shut off and i had to pull over.
it is getting fuel, its getting air, there is exhaust pressure out the tail pipe, had plenty of oil and the temp was fine. it cranks and cranks and cranks but wont start it gives an occasional light backfire pop out the tailpipe.
i put a new cap and rotor on it because they were destroyed and it seemed like a timing issue/not firing on all cylinders but had no luck. checked plugs and its getting spark.
then someone suggested maybe it blew up a piston but i figured i would hear that like the other motors i have seen blow up pistons.
im aiming for broken timing chain/skipped a tooth. and im not excited to fix this if this is what the problem is. i have not dealt with timing chains before.
any ideas on what would be causing this would be appreciated.
Thanks,
Mitch
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