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Old 09-01-2011, 04:20 PM   #1
2 Rivet Member
1995 30' Limited
1995 31' Land Yacht LE
Seattle , Washington
Join Date: Aug 2011
Posts: 23
Question 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?

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Old 09-01-2011, 05:42 PM   #2
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1974 31' Sovereign
1993 21' Sovereign
Colfax , North Carolina
Join Date: Jun 2003
Posts: 19,573
Before doing that, try changing the oil, and using Mobil 1 in it. I did that with a couple of generators, and the smoke went away. This was oil smoke, not from a carburetor problem.

Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.
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Old 09-02-2011, 10:09 AM   #3
2 Rivet Member
1995 30' Limited
1995 31' Land Yacht LE
Seattle , Washington
Join Date: Aug 2011
Posts: 23
I will try changing the oil.
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Old 09-02-2011, 10:45 AM   #4
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2005 25' Safari
Trabuco Canyon , California
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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..
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Old 09-02-2011, 10:48 AM   #5

1968 20' Globetrotter
Join Date: Apr 2011
Posts: 314
Hi There,

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".

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