Re: 92 Yamaha fouling plugs
Yes Yamaha's started with a B5ES, then whent to a BR4ES. G16's and up came with BPR2ES and thats all I install in Yamaha 4 cycle engines (G2/G9/G8/G5/G14/G16/G22 and now the drive) the hot spark plug doesn't hurt anything. As for the fouling problem...Are you useing a NGK? If you try a Autolite or Champion...your bond to premature fouling. Is the spark plug oil soaked, carboned?
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