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4.0L, 6 cylinder routine maintenance
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10-31-2009, 01:26 PM
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#1 | |
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Registered User
2008 MK Compass
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4.0L, 6 cylinder routine maintenance
Recomeneded spark plug gapping?
How tight should the breathers be on your valve cover? Mine are real lose Best brand for spark plugs? I bought champions 
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10-31-2009, 05:46 PM
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#2 |
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Registered User
2008 MK Compass
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The book recomends a specific brand and the plugs to be gapord at .035, but I was curious if people have discovered any new tips for me while I'm doing this work on my MJ
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11-05-2009, 05:43 PM
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#3 |
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It's the crank sensor!
 
1999 XJ Cherokee
Join Date: Nov 2007
Location: Central Minnesota, MN
Posts: 6,799
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Nothing special for tuneups. Champion plugs, .035, new wires, cap, rotor to complete tuneup. Of course, check air filter. A bottle of Chevron/Techron fuel injector cleaner in about 3/4 of a tank of gas is never a bad idea to help optimize fuel injector spray pattern.
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99 Cherokee, 4.0 AW4, NP242 Past Jeeps: 49 Willys, 81 Scrambler, 88 Comanche Without "data", all you have is an opinion! |
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