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Discussion Boards > Active Subjects > Messages as Posted > John Deere Gator Forum

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12-14-2009, 12:57

Post: 167487

kwschumm

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Location: NW Oregon
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Gator won t idle

On many gas engines vacuum leaks show up as idle problems. You can take a spray can of something like Gumout and spray it around the gaskets (base of carburetor and two halves of the carburetor itself) and if the engine speed changes then likely there is a leak.

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12-15-2009, 08:18

Post: 167505

kwschumm

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Gator won t idle

If the machine is electric start you might see if it's feasible to eliminate the factory fuel pump and install a small regulated electric fuel pump.

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12-15-2009, 12:45

Post: 167522

kwschumm

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Gator won t idle

The last time I retrofitted an electric fuel pump to anything was 20 years ago. But all they need is 12 volts and either a built in or external regulator to limit the fuel pressure. Doesn't have to be fancy, just fit it between the fuel tank and the carburetor inlet and you can fuse it and install an dedicated switch to turn it on and off. Sometimes it's a lot harder to retrofit depending on piping, etc.

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12-15-2009, 23:40

Post: 167530

kwschumm

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Gator won t idle

I don't know anything about that engine but it's possible you'd have to remove and block off or cap the pump nipples to eliminate any vacuum leak that may be caused by the pump. You might be able to rig up a gravity feed of some sort to test the theory (a can of fuel gravity feeding into the carb) and cap off the fuel pump lines. Not sure that would work but it's probably something I'd try (hope you don't smoke and keep a fire extinguisher nearby )

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