97 XJ Cylinder miss #1--stumped - JeepForum.com
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Unread 06-25-2013, 09:50 AM   #1
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1997 XJ Cherokee 
Join Date: Jun 2013
Location: Apache Junction, United States
Posts: 7
97 XJ Cylinder miss #1--stumped

Hey guys/ladies, I have a 97 XJ with the straight 6 of course. well I've been having a cylinder 1 miss for quite awhile. I am an at home DIY mechanic and I must admit this has me stumped. I've replaced the cap, rotor, spark wires, Spark plugs, injectors, ign coil, new upper block gaskets. at this point i'm just leveled. I put over $700 in the past few months into my girl (granted at 231k alot of it was preventative maintenance). The only other thing I can think of for the misfire is bad valve, bad rings (doubtful, no smoke or elevated oil pressure), bad timing set. I'm basically looking for some input you guys might have into a new direction I can look into.


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Unread 06-25-2013, 02:06 PM   #2
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1989 YJ Wrangler 
Join Date: Nov 2010
Location: Sin City, Nevada
Posts: 2,881
Pull the plugs while it is warm and do a compression check. Read what the spark 0plug color is telling you. Color pages in a Haynes Manual. From there you will know if #1 is healthy.

There is a plug chart on this link.

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