Thoughts on an engine that smokes a bit...

[jimmystractor 171]

I recently bought a 7119 that has a series II motor. The PO thought it was a 1979-1980 model so it has been around the block. The tractor is in okay shape and the motor seems to work as it should. The motor smokes a little bit on startup, mostly when you are getting the throttle to full. The smoke is a black/blue type of smoke. Is something like this pretty much the first warning sign that the end is near or could this motor still work a long time with proper maintenance?

[dhoadley 1,744]

If it were mine, I would keep an eye on the oil and the plugs. If it runs strong, uses only a little oil and doesn't foul the plugs too quickly, I'd run it until started going downhill.  For what its worth... Dave

[Brettw 1,127]

Black smoke is usually an indication of fuel issues, blue or grey is an issue of oil burning.  If it is just on start up and not using a bunch of oil, I would'nt worry too much.  I might change out the plugs and run some Seafoam in a few tanks of gas to try to clean up any fuel issues.  Check the air filter housing.  Is there oil in it from the breather?  If so check / replace the breather assembly.  Beyond that, I would simply make sure the oil level is good, and check it regularly.  Low oil is the quickest way to kill the KT / Magnums (and any engine really)

[goatfarmer 817]

I'd run 'er til she drops.  You might go to a straight 30 oil, if weather conditions permit.