Quote:
Originally Posted by Demon49
Ok, I was thinking it was running out of fuel cause the bowl wasn't filling up fast enough. That's what a bad vacuum would do right? I checked around and wasn't able to find a oem petcock. I found what ebay has and they don't look the same. My question is where to get a reasonably priced replacement? Thank you
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A malfunctioning vacuum petcock will block the flow of gas. My GZ has a "bypass" or "prime" position on the petcock that allows gas to flow, vacuum or no vacuum. This will allow the engine to run, but it will also fail to prevent gas leaking past a carb. float valve that might be sticking open, which could potentially flood the engine with gasoline, which isn't a good thing.
I installed a cheap, Ebay replacement on my machine.
https://www.ebay.com/itm/353210593178
It wasn't identical, but it works, better than the malfunctioning OEM petcock. The nipples are at different locations than OEM, which meant I had to replace both hoses. Replacing fuel and vacuum hoses once a decade, as part of a maintenance schedule is actually a very GOOD idea and heads off them failing while you are riding.
You may not need a petcock. Another thing that can cause vacuum issues that can cause petcock issues, that can cause the engine to stall, is simply having idle set too low. GZs are supposed to be set to 1300 +/- 100 rpms. What is yours set at?