2002 jeep liberty

Asked by grester92 Nov 28, 2019 at 02:13 AM about the 2002 Jeep Liberty Sport 4WD

Question type: Maintenance & Repair

I have a 2002 jeep liberty and number 4 cylinder is
miss firing replaced coil packs new plugs new
injectors and fuel filter and still miss firing on
number 4 any ideas

2 Answers
40,180

TDolby answered 4 years ago

The next step is to perform a cylinder compression and or leak down test. This will tell you if the valves are seals are the issue. A low PSI number will indicate a problem. It might also be a faulty fuel injector.

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