Thumper Club Forum

Technical => Bike Problems/Questions => Topic started by: guest1405 on November 16, 2013, 04:47:39 PM

Title: Repeated Spark Plug Failure
Post by: guest1405 on November 16, 2013, 04:47:39 PM

I recently replaced a spark plug and after only about ten miles it failed. No spark at all and when tested with a multimeter, no continuity through from the top down through to inner electrode.
Bought another plug, bike ran perfectly in the workshop so I carried on with other jobs. Went to start bike a week later and no spark. Second new plug failed and again no continuity. Whats going on? Is my engine somehow killing plugs or am I incredibly unlucky to have bought two plugs from a dodgy batch, they are NGK both from the same reputable bike shop. Any ideas?

Title: Re: Repeated Spark Plug Failure
Post by: guest564 on November 16, 2013, 07:56:28 PM

Did you test continuity before you put them in? if they are resistor plugs then they will have a resistance of something like 10kOhms