Posted by Jon Hagen on April 04, 2012 at 21:04:34 from (69.26.23.96):
In Reply to: JD 4020 BLUE SMOKE posted by R D on April 04, 2012 at 17:23:28:
What year, is it an early model ? Is the blue smoke a new thing that came on quickly. Normally it takes a long time to wear out an engine and have oil burning past the rings. My 64 4020 has a crankcase ventilator pump that pumps crankcase fumes into the carb air intake tube, which makes blue smoke..
If the air ckeaner is seriously restricted, it will pull enough vacuum in the carb air pipe to suck engine oil into the carb intake pipe.
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