Zj 5.2 mystery issue (pls help) - JeepForum.com
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post #1 of 3 Old 04-25-2019, 09:43 AM Thread Starter
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Zj 5.2 mystery issue (pls help)

I have a 1993 Jeep Grand Cherokee 5.2 with 147,000 miles with a 3.5 inch lift. I have recently ran into this problem where it has trouble starting sometimes...

So the issues I am experiencing is when I go out in the morning to warm it up, I sit there and crank it and crank it for 10 min with no start at all or it starts and its running really rough then dies. But

the thing that is mind boggling is that I leave it alone for 15 min and go back out and crank it some more and it fires up and idles fine. Lately this has been happening almost every time I go to start it

and sense this is my main mode of transportation I need to get to the bottom of this . This problem is really frustrating and i'm not quite sure what to do. I have a couple hunches of what it might be

but its so random. I just replaced the fuel filter and did the distributor, rotor, and wires on it too. Any suggestions or ideas on what it might be, i'm stumped.

Thanks in advance

Last edited by cougmyster; 04-25-2019 at 10:25 AM.
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post #2 of 3 Old 04-25-2019, 11:00 AM
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things I would look at

Fuel pressure - check PSI and leak down. Turn KOEO, record high reading leave key on observe leak down - record PSI in 5minutes.
Try to check codes.

Turn key to run do not start, five seconds then key off then try to start, this would 'prime' system if dropping pressure is an issue. - did it start better?

When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
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post #3 of 3 Old 04-25-2019, 03:56 PM Thread Starter
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Ill try to do that, I dont have a fuel pressure tester on hand so ill have to pick one up. Thank u for the suggestion, really appreciate any help I can get.

any other suggestions?
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