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Old 07-11-2018, 07:02 PM   #2
smallblock450sl
Sometime's............
 
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Yamaha
 
Join Date: Oct 2007
Location: Tacoma Washington
Posts: 11,875
Default Re: G8 randomly sputtering

A dynamic spark test would be of good use on this. About 10 bucks at the auto parts store. Plug it onto the spark plug and the cap and run the car. When it starts sputtering, check for good spark. This will help isulate if it is spark problem. Did you use an NGK-BPR2ES spark plug? Was the coil OEM or aftermarket?
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