Question about John Deere 3010,3020 Tractor Basic Carburetor Repair

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How much should a starter on a 3020 diesel tractor draw. the batteries only turn it over for maybe 20 sec. the starter was new a year ago

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Does the starter get hot? In 20 seconds of use it shouldn't get more than toasty warm.

If the starter isn't heating up excessively I'd think the next thing to consider is the batteries. They don't last forever, and heavy use when starting can just wear them out to where they have a short cycle under heavy load. Check the electrolyte in the batteries too, low electrolyte will cause a battery to act just like a smaller battery than it is.

How does it run? Any smoke at idle, that sort of thing? If the pump timing is late it can make for a hard-starting motor. Is there any leakage in the fuel return that could cause the injector pump to be losing its prime? Are you getting good thick white smoke from the exhaust right from the time you hit the starter?

Honestly, 20 seconds of cranking is a lot for a diesel.. Cranking speed can be critically important in starting a diesel, and you get the best cranking speed in the first few seconds. If this motor has glow plugs go through them and make them work. If you can park it near an outlet put a block heater on it and stick a cheap hair dryer in the intake when you start it, you wouldn't believe how well that works.

If there's no way to warm it up then you gotta ether it. A can or two of ether a month can save you a lot in starter wear and hard battery use. The trick is to use as little as possible- you want it to fire smoothly with no knocking. Heating your ether can on the defrosters helps some too, just don't forget it there..

Give all this some thought, get back with me and let me know what you've tried and how it's working for you, we'll take it from there.

Posted on Jan 01, 2011

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