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Jeep Wrangler YJ
YJ General Discussion
Cylinder misfire
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<blockquote data-quote="SKEETER45" data-source="post: 434161" data-attributes="member: 19315"><p>Need some help. I have a misfire on #5 cylinder of my 88 4.2 . I replaced that plug (plug did look different than the rest) with another one and problem did not move. I then moved wires and no change either. Ran a compression test and all checked good . Replaced cap and rotor no change. I started it and can hear the spark jumping to the plug. Any thoughts? Thanks</p><p></p><p>Added. Took for a test drive. Ran great. Only will I slowed to idle was any sign of misfire. Also noticed when I shut it off something keeps making a noise under valve cover.</p></blockquote><p></p>
[QUOTE="SKEETER45, post: 434161, member: 19315"] Need some help. I have a misfire on #5 cylinder of my 88 4.2 . I replaced that plug (plug did look different than the rest) with another one and problem did not move. I then moved wires and no change either. Ran a compression test and all checked good . Replaced cap and rotor no change. I started it and can hear the spark jumping to the plug. Any thoughts? Thanks Added. Took for a test drive. Ran great. Only will I slowed to idle was any sign of misfire. Also noticed when I shut it off something keeps making a noise under valve cover. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Cylinder misfire
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