john deere 4010 starting problems

Anonymous-0 · Jan 5, 2009

I recently purchased a john deere 4010 gas tractor to pull my jd 310 round baler. Works well with the exception that it is difficult to start in the winter, as i also use it to move bales with the front end loader. I also had the carburater rebuilt. It starts in the winter only after I give it a shot of fuel and starting fluid in each cylinder. Runs well, but does foul plugs after about a month of using.
Any suggestions wouyld be appreciated.
Thanks,
Rcdka

trucker40 · Jan 5, 2009

Sounds like its low on compression.Enough to run with some help,but not enough to start.I would set the valves if they are adjustable.If that doesnt fix it you might have to pull the head and get the valves ground and see how wore out it is.Usually you have to do the bottom too.If its not wore out too bad you might just put rings in.

Glen D Anderson · Jan 5, 2009

1/ Compression test - if comp. is low, you're flogging a dead horse.

2/ Ignition system overhaul - replace points & condensor. Confirm condition of wires, rotor, cap, plugs, and coil...........Is the plug fouling coming from oil consumption or rich fuel mixture? Possibly install new plugs one or two heat ranges higher than factory.............

3/ Carburetor was overhauled properly? Confirm choke is closing all the way.......

4/ Starting system condition - Good cranking speed? Condition of batteries, cables, and starter?

5/ Block heater installed and working?

rustyfarmall · Jan 5, 2009

My dad owned a 4010 gas. A neighbor owned a 4020 gas. The only way to keep the plugs from fouling on either one was to work them hard. Both of those tractors were purchased brand new and had plug fouling problems from the beginning. If you are doing relatively light work, use a lower gear and keep that engine wound up.

msb · Jan 5, 2009

First thing to chech is if the choke when pulled is completely closing.

msb · Jan 5, 2009

First thing to chech is if the choke when pulled is completely closing.

msb · Jan 5, 2009

First thing to check is if the choke when pulled is completely closed.

Jon Hagen · Jan 5, 2009

The 4010-4020 gas tractors were hard starting and tended to foul plugs right from new. The culprit is the weak stock ignition system.

Replacing the ignition switch with it's built in ignition resistor will help a little, but even with a new switch/resistor, running voltage at the coil is only about 5 volts, so ignition spark is pathetically weak.
I converted mine to an electronic ignition system years ago and find it a totally different working tractor.

Where it used to not start if it was a little damp or cold, it now will start even with wet snow or rain on the cap, plus it no longer fouls plugs.

Get a good electronic ignition system on there that eliminates the stock ignition resistor and you will have a great running tractor.
Mine even runs on less fuel, as I no longer have to set the carb over rich to compensate for the weak stock ignition.

john deere 4010 starting problems

Anonymous-0

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trucker40

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Glen D Anderson

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rustyfarmall

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msb

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msb

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msb

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Jon Hagen

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