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Jeep Wrangler JK
JK General Discussion
P0300 and cylinder misfires
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<blockquote data-quote="Dirty Dog" data-source="post: 451762" data-attributes="member: 24042"><p>The brand is irrelevant. There is no such thing as a Mopar sparkplug. They re-brand plugs from several companies, like Champion and NGK. Autolite is a perfectly good, reputable company. </p><p>All that matters is that the plugs you used are the right size, the right heat range, and are properly gapped. I've noticed that fewer and fewer people seem to gap plugs before they install them.</p><p>Since you've already replaced the coils/wires/plugs, you need to consider other causes. Like plugged catalytic converters, injectors problems, fuel pressure or pump failure, cam or crank position sensor...</p></blockquote><p></p>
[QUOTE="Dirty Dog, post: 451762, member: 24042"] The brand is irrelevant. There is no such thing as a Mopar sparkplug. They re-brand plugs from several companies, like Champion and NGK. Autolite is a perfectly good, reputable company. All that matters is that the plugs you used are the right size, the right heat range, and are properly gapped. I've noticed that fewer and fewer people seem to gap plugs before they install them. Since you've already replaced the coils/wires/plugs, you need to consider other causes. Like plugged catalytic converters, injectors problems, fuel pressure or pump failure, cam or crank position sensor... [/QUOTE]
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Jeep Wrangler JK
JK General Discussion
P0300 and cylinder misfires
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