Quad smoking heavily?

Hey,

I bought a used quad (a 2013 SMC Rex Aspen 50cc) and noticed while riding that it was smoking heavily. What could be causing this? I've come up with the theory that it's getting too much oil, but I don't know how to check, or if it's due to something else (like the exhaust). The quad's smoke is white/gray rather than blue or black.

Thank you in advance for your answers!

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Flitzpiepe2002
2 years ago

I would tap the cylinder head gasket, as cooling water probably flows into the combustion chamber.

Flitzpiepe2002
2 years ago
Reply to  Koiplan

You could measure the compression pressure over the spark plugs. There should be a strong pressure loss.

wildpark7
2 years ago

Control spark plug image.

wildpark7
2 years ago
Reply to  Koiplan

2 tactors qualms grundsätzlichttps://www.gs-classic.de/tipps/zuend_02.htmh always.