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Jeff Policky
Jeff Policky, Motorcycle Mechanic
Category: Motorcycle
Satisfied Customers: 2425
Experience:  Yamaha Gold, Suzuki Gold, Honda Bronze, Polaris Bronze, BRP
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2008 SYM HD 200...FUEL IN AIR BOX

Customer Question

2008 SYM HD 200...FUEL IN AIR BOX
Submitted: 10 months ago.
Category: Motorcycle
Expert:  Wayne S. replied 10 months ago.

This is most often a problem with the automatic fuel petcock valve leaking fuel into the vacuum hose and then into the air box one way or another.

There is also a vent hose on the fuel filler which can fill with fuel when the tank is full or tank pressure is high like on a hot day.

I would route the vent hose away from the air box and see if the petcock valve has fuel in the vacuum hose. Try replacing the petcock

or get some kind of shut off valve to stop the fuel manually.

Check your oil for fuel and change it if necessary.

A steady leak could be a dirty or worn carb float needle valve

inside the carb. This could flood the engine with fuel.

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