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08-04-2011, 21:00 Post: 179673
jkeyse

Join Date: Aug 2011
Location: Maryville, TN
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Carbon buildup on Spark Plug causes stalling

After cleaning the spark plug the gator runs fine for several days, but if the engine idles for any length of time the plug gets a coating of carbon and causes the engine to miss, cough, and eventually die. The engine will usually not start again until the plug is cleaned. I removed the spark arrestor on the tail pipe which was causing a back pressure, and this same problem, but that was about 4 years ago. It had been running well until this year. I have tried a hotter plug, inspecting the air filter, and removed cleaned the muffler.

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08-22-2011, 22:55 Post: 179974
strikefalcon

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Location: minnesota
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re: Carbon buildup on Spark Plug causes stalling

When it is missing etc. Will it clear itself or does it always die?

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08-22-2011, 23:11 Post: 179975
jkeyse

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re: Carbon buildup on Spark Plug causes stalling

The spark plug never clears itself. It doesn't always die, not until the plug no longer can fire to ignite the charge.

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08-24-2011, 13:31 Post: 180027
strikefalcon

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re: Carbon buildup on Spark Plug causes stalling

Sorry the only thing I gan think of might be ring blow by but if it is not burning oil I don't know.

Don't let it idle.

Loren

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08-24-2011, 23:35 Post: 180035
jkeyse

Join Date: Aug 2011
Location: Maryville, TN
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re: Carbon buildup on Spark Plug causes stalling

The engine is not burning any oil. Do you know what the cylinder compression stroke pressure should be on the Kawasaki single cylinder engine. My gauge reads about 35 psi which seems extremely low. In some Kawasaki lit it said the engine had a compression release system, but it was referring to a rope pull start. Of course the gator has a 12 volt starter motor, so doesn't seem like the engine would need a compression release to start, but who knows?

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08-25-2011, 05:30 Post: 180038

gatoraider

I really appreciate your input about the compression release system. If the compression release is slow to close, such as at idle speed, it would explain the poor combustion in the cylinder. It would also explain why there is no loss of power at higher rpm's.

Carbon buildup on Spark Plug causes stalling
Utility Vehicles UTV/ATV
Replies 7 Post by jkeyse

I have a 3720 with front wheel assist. I was using tractor around my property and found some light duty string wrapped around front axel and wheel. Now the MFWD is leaking from right front. I am assuming the axel seal. How hard of a job would this be to pull apart and replace the seal or seals. I have been using the tractor yet but have to continuously add fluid to the front axel because it leaks out and also makes a mess. Have to park tractor on a hill or block of wood so the fluid goes toward other wheel to prevent from leaking.

JD3720 E-hydro MFWD front wheel seal leaking
John Deere Tractors
Replies 1 Post by jkeyser

I couldn't figure out how to pull cylinder apart,niether could the dealers mechanic at first. Had to order the rebuild kit which came with a detaining ring to get the rod out of the barrel. The 1.5 inch O-ring and some other rings and wiper were chewed up. Also the nut was almost off the threads of the rod. The mechanic thinks the loose nut is what caused the problems. Put it back on the loader and problem is solved. It must have been a Monday or Friday at the John Deere factory.

300CX Loader
John Deere Tractors
Replies 7 Post by jkeyser

I have a 3720 with cab, and have noise issue only while listening to the AM channels. It only happens if the blower fan is on with the AC unit on. If I turn the fan off, no noise, with the fan on I can't hear anything but static and noise.

Radio Noise
John Deere Tractors
Replies 12 Post by jkeyser