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Culver Cadet Section => Maintenance and Repair => : Tim Lunceford September 09, 2015, 05:22:28 PM
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I was noticing that my Franklin powered Cadet seem to be down on power. I had Champion REM 38s installed with 160 hours on them. Mogas for fuel. After checking mag timing and verifying that the throttle was opening all the way I changed plug to C10 S. The power is back and the engine is running smoother. I would like to hear if anyone has any opinions as to the expected life expectancy of sparkplugs in the Franklin engine. Thanks, Tim
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I believe the REJ-38 plugs incorporate a resistor in the center post. One of the failure modes is a breakdown of this resistor, resulting in higher resistance. Do the new plugs incorporate resistors?
If the coils in your mags are weak, that could contribute to the difference noted.
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Bill, I do not know if the recently installed plugs have resistors. They are old/new stock Champion and called for in the Franklin service manual. Tim