SPARK PLUG CAPS

BIKE (UK) - - THE DEALER -

Later bikes were all sup­plied new with a metal HT cap. If this hasn’t been re­moved there’ll be ig­ni­tion is­sues in damp or wet con­di­tions. Wa­ter on the metal cap will lower its re­sis­tance un­til the spark jumps be­tween the plug and the cap rather than across the plug’s ter­mi­nals. It’s an easy fix: plas­tic NGK caps cost £5.

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