"I also bought a JD 4020 that the governor was hanging in the injection pump. It would not always start. You had to work the throttle a few times to get it to open. I put a heavy dose of the JD lub/additive in it. After a few tank fulls it is running fine. Now is it just being used more or did the additive work??? I can't tell you 100% but it seems like the additive is helping."
JD I had the same experience with a 4320. Only I used 2cyl. Hot the governor would stick when idling down and it would stall not restart until cool or cover took off the pump and the linkage twiddled some. 2cyl oil cured it. I started with a gallon per tank then got down to a few oz's.
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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