Bad autolite xp985? Misfire - Jeep Wrangler Forum

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Old 03-14-2012, 11:17 PM   #1
Join Date: Oct 2011
Location: Marion, Iowa
Posts: 208
Jeepzjlover is on a distinguished road
Bad autolite xp985? Misfire

Have code p0303 on an 02 wrangler haven't gotten more then a 1,000 miles on these plugs. I washed the motor off the other day and about a week or two later I get that misfire and it runs a little rough when doing it, normally happens when warm been ran for awhile then go back and start again but it's hard to reproduce its random.

On a side note idk how many of you have used champion platinums but that's what came out when I replaced the plugs the champions are about 3/16 to and 1/8 longer then the xp985 I can't help but think they would get less contact in the boot being shorter.

Anybody got some suggestions?
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Old 03-15-2012, 06:46 PM   #2
Join Date: Oct 2008
Location: Jacksonville,Florida
Posts: 578
gmiller0737 is on a distinguished road
Personaly I would have put Champions Back in it.
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