Re: Quits when hot

Posted by Steve - IN on June 24, 2003 at 22:04:15 from (12.223.205.149):

In Reply to: Quits when hot posted by FarmallBailey on June 24, 2003 at 21:36:19:

FarmallBailey,
From what you've said - my first guess would be the coil. If it's running hot, you're probably supplying it too much voltage -- and so it supplies less and less spark until the engine dies. Try getting a 1.8 to 2.0 ohm ballast resistor rated at 35 to 50W and sticking it inline from the igntion switch to the coil. That should keep the coil running cooler and the tractor running longer.

You say gray then white smoke. Those are two different indicators. Gray usually means too lean - make the mixture a bit richers by unscrewing the main jet on the carb a bit. White smoke, you're right, is water, or steam coming off and that could be a headgasket.

First thing you might test is the voltage going to the coil. It's either 12 to 14 or 6 to 7.5 or so. If the two terminals on the primary side of the coil measure >3.0 ohm, it wants 12 volts. If the terminals meausure around 2 ohms, it wants 6 volts. Next do a compression test at cranking speeds to see if any of the cylinders is greatly different than the others - which might indicate a blown headgasket. Also check for water in the oil.

My guess is that it's the coil, but best to be safe and check for the headgasket as well. Good luck with it!

Follow Ups:

• Re: Re: Quits when hot FarmallBailey 04:26:24 06/25/03 (0)

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