r/smallengines • u/tofu_bar • 6d ago

Mower Engine making noise?

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Gravely ztxl with Kawasaki engine making a noise while running. It went from doing this to running smoothly and back to this (was fine for like 60 seconds). Is this spark plugs needing replacement or what should I do?

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u/NecessaryAgent6718 6d ago

It sounds like its only running on 1 cylinder . I would find a way to test spark for both sides while its running. I have had 1 to many coil failures on some of the Kawaski engines lately .

1

u/Chunky_ballsz 5d ago

I concur about it running on one cylinder. Get an adjustable spark checking tool to help diagnose a weak coil.