Question about 1989 Jeep Cherokee

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1989 jeep Cherokee Laredo timing specs and how to

I have a 1989 jeep Cherokee Laredo and bought it as a non-op. owner said it overheated all the time. so far the things i have fixed are... replaced the thermostat, water pump, radiator, the head, valves and all that they entail, spark plugs and wires, distributor/rotator thingy and cap, new gaskets on everything previously mentioned plus the intake and exhaust manifolds and oil pan. when i finished and started the engine for the first time i found that is misfiring really badly. it barely can keep running at idle because its so bad. the plaque inside engine compartment says that TIMING CAN NOT BE ADJUSTED. if that is true then i would like to know what else could cause this problem. but if it's not true... i guess my question is How do i check/adjust the timing on the 4.0 liter inline 6 cylinder and what are the specs that i set it to.

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  • tysenjakob Sep 26, 2009

    ya, i have manuals, own a timing light jeep uses a chain which cant slip and has not broken. the specs are not in the specs are not in Chilton or hayse which i haven,t found one by any other producer and shouldn't need to. also neither go into much detail other then to say that it is set at the factory and to have a jeep tech adjust if ever should be needed. i cant afford to let someone else work on my car. so anyone else got an answer or advice (other then the obvious).



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  • 811 Answers

Buy manual, check timing chain or belt

Posted on Sep 26, 2009

  • chris quammen Sep 26, 2009

    is the antifreeze proper ratio, check radiator cap, recheck timing marks 



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