strange fueling issue

ddewey78 · Post by **ddewey78** » December 1st, 2014, 5:11 pm

So I was riding over Thanksgiving and one day my bike was running great, the next it started winding up, as if the fuel was shut off, but it wasn't. If I pulled the choke on, it would idle back down. Any thoughts where to start looking?

FYI it is a 97 motor with a pwk carb.

Post by **MojoScojo** » December 1st, 2014, 6:44 pm

Air leak.

motardcr500 · Post by **motardcr500** » December 1st, 2014, 6:44 pm

Sounds like a classic air leak.
I'd start with a thorough inspection of the carb and the carb boot.
From there I would do leak down test.
When is the last time the engine was rebuilt?

ddewey78 · Post by **ddewey78** » December 1st, 2014, 7:10 pm

it had a top end put in it last year, maybe 12-15 hours on it. I havent even unloaded it out of the trailer yet, but when i do, i will start with looking at the carb and boot, thanks

motardcr500 · Post by **motardcr500** » December 1st, 2014, 7:58 pm

Ok, If the carb and boot checks out ok, you might want to toss in some crank seals.
It certainly can't hurt

jr475 · Post by **jr475** » December 2nd, 2014, 2:42 am

This happen to mine with about the same amount of hours and it was the base gasket.

ddewey78 · Post by **ddewey78** » February 12th, 2015, 10:38 pm

delayed reply,

so i checked the carb and boot, looked fine, so i broke downand i bought a leakdown tester, glad i did. turned out there was a tiny split in the boot, never would have seen it. fixed it up, and runs great now. thanks!!!

Sandblaster · Post by **Sandblaster** » February 13th, 2015, 7:44 am

Good to hear.
Love my leak down tester...

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strange fueling issue

strange fueling issue