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JD 1050 not running right

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Posted by Mark Solomon on November 26, 2002 at 08:11:11 from (

I have a JD 1050--3 cylinder diesel (YANMAR). 1.) In cold weather, after getting started, the idle cycles from wherever I set the throttle to almost stalling, then revs back up. No amount of warming up time helps. It does the same whether it is just sitting or under load. This only happened when the weather turned cold. I was thinking that the fuel filter was the culprit. Any suggestions?

2.) Also in cold weather, the engine overheats and blows the coolant out the overflow. Ran all summer just fine. Changed theromostat and still does it. Water pump faulty? Coolant does circulate. Radiator core blocked? Any suggestions on this one too?



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