1995 30' Limited
1995 31' Land Yacht LE
Join Date: Aug 2011
Generator exhaust smoke
After some run time my generator smokes - it appears to be plain old blue-grey exhaust smoke. Assuming it is the result of wear and tear in a 15 year old Land Yacht, are there shops that rebuild the motor? Cost?
I'd also try to change the oil, and the spark plug (in case its fouled) and see what happens before you tear down the engine. If it specs a 15-40, or straight 30 or 40 oil, I'd try Mobil 1 15-50. If that cuts consumption to near nothing, next change I'd go with a xxW40 synthetic. You could be suffering from fuel dilution or stuck piston rings oil so a change is worth a try..
I use Mobil 1 in everything. I never tried Mobil 1 to stop smoke, but it may indeed burn cleaner than petroleum. It makes sense that it is a better "frying oil".
"Back in the day", when I had a smokey Porsche 356, that needed rings and valve guides, I used a 30# two-stroke motorcycle oil "Yamalube" which was formulated as "smokeless". It alleviated the embarrassment, and provided adequate lubrication. Eventually I tore the motor down and found no burned bearings or crankshaft damage.
Definitely try Mobil 1 or two-stroke oil. Maybe These days they make a synthetic two-stroke oil??
And.. schedule a "freshening" or full rebuild... BEFORE something "lets go".