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Author Topic: plug caps arcing  (Read 951 times)

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Offline carl550k

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plug caps arcing
« on: April 29, 2006, 10:14:06 AM »
 today after a great ride i was idling in the driveway and heard a clicking sound. i looked down to notice #4 plug cap arcing to the cylinder head, but only at idlle, as the rpms went up it goes away. is it the cap? can i get away with electrical tape it till monday? thanks carl.
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Offline scondon

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Re: plug caps arcing
« Reply #1 on: April 29, 2006, 12:14:03 PM »
Quote from: carl550k on April 29, 2006, 10:14:06 AM
today after a great ride i was idling in the driveway and heard a clicking sound. i looked down to notice #4 plug cap arcing to the cylinder head, but only at idlle, as the rpms went up it goes away. is it the cap? can i get away with electrical tape it till monday? thanks carl.

  I've had this happen and yes, it was the cap. Wrapping the cap in electric tape stopped it from arcing to the head. Performance improved when I replaced the cap after cutting 1/8-1/4" from lead to get some fresh wire exposed.
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Offline Green550F

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Re: plug caps arcing
« Reply #2 on: April 29, 2006, 07:38:37 PM »
I got a replacement NGK cap at a local shop for about $4 last week. It has "NGK" in raised white but otherwise is an exact match.
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