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302 missing at idle..

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Old May 13, 2011 | 06:12 PM
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De-von Ford trucks
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302 missing at idle..

alright it runs like a sewing machine on the road. but it misses at idle...only does it some times,,, and only when the rpms are low..... so im thinking it may be either the spark plugs or the wires??? any other things that anyone thinks it might be??
 
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Old May 14, 2011 | 06:18 AM
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rdweathers
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I had similar problem, just swaped intake out prior to engine missing, my miss was because of intake gaskets leaking on under side of intake, i could see the oil trail into the intake runner once intake was off. I almost pulled all of my hair out tracing this down before pulling intake.
 
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Old May 14, 2011 | 06:46 AM
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yeah sounds like a vacuum leak - spray some water around the inlet area and as it seals briefly your rpms should make a quick jump
 
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Old May 20, 2011 | 08:28 PM
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im going to change plugs first.. if that doesnt help then.........ill try somethin else
 
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