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TOPIC: MKII fuel cap issue

MKII fuel cap issue 10 Mar 2019 19:04 #800126

  • swflmike
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Just finished my bike and after I ride it, the fuel tank hisses from the cap. Some fuel had splashed around inside the tank and spit out the cap. Got under the paint and screwed up my new paint job. Needless to say, I'm pretty pissed. Where is the vent on a MKII tank?
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MKII fuel cap issue 14 Mar 2019 19:04 #800367

  • PaintWorkz
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The vent is probably built into the cap. If it is hissing the vent system might be getting plugged up. Take the cap apart and inspect vent holes, passages, and gasket.

Also I recommend never filing tank more than 2 inches from top. I have seen a couple of my lacquer paint jobs ruined from sitting in the sun on the side stand with a topped off tank. Urethane clear is a lot more fuel resistant.
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84 Gpz900 street
77 KZ 1325 Turbo Dragbike project
79 CBX Pro Stock projects (2)
78 Z1R-TC AMA & ECTA LSR record holder
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Lake Havasu City, AZ

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MKII fuel cap issue 22 Mar 2019 11:25 #800844

  • doomwizard
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Noticed my tank doing the same thing. when using the kick stand gas started coming through the keyhole?! My searching shows to check the pin hole vent and make sure the rubber seal is still good.

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