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Old 11-30-2011, 09:54 PM
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Venice Motor Bikes Venice Motor Bikes is offline
Custom Builder / Dealer/Los Angeles
Join Date: Mar 2008
Location: Los Angeles, CA.
Posts: 6,019
Default Re: Spark Plug reach-why not use longer?

Thats a good idea, but you also have to use a plug that's the correct heat range.
If the plug is too cold it will foul over with unburnt oil & gas; if it's too hot it will cause pre-ignition.

I'm sure there are heat range charts for NGK plugs on line.
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