Question about Motorcycles
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Posted on Jan 02, 2017
SOURCE: white smoke
Are you sure the smoke is white? White smoke is usually caused by antifreeze burning.(This could be a head gasket)
If the smoke is actually light gray it is oil burning.(This would be rings or valve seals)
If it smokes mostly on startup and then stops when it warms up (It could be a worn valve guide or deteriorated valve guide seal (or possibly several) allowing a tiny amount of oil into one or more cylinders).
If it smokes mostly when you are cornering (It could be too much oil in the crankcase).
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Posted on May 19, 2009
SOURCE: smoking horribly
The white smoke indicates the need for new valve guide seals. The black smoke indicates that the fuel/air mix is far too rich. Re-jet the carb to stock #137 main jet. Don't mess with the pilot jet if the bike idles okay. No other settings to mess with. Install a new stock plug ; NGK R CR9E
ALWAYS have a fire extinguisher on hand when working on carburetors.
Drain the carburetor. There should be a screw on the lower side of the carb float bowl. Remove the screw then replace it after the fuel drains. Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Check the jet needle clip on the top of the needle. Put it in mid-range. Put the carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine.
I just thought of somthing. You may be creating the rich mix problem yourself. See the following starting instructions.
There is a proper way to start the engine. Four controls are on your bike to assist in starting.
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Posted on Jun 21, 2009
I guess it depends on a number of tings - how many miles has it done?
Has it been regularly serviced?
Have the oil change schedules been properly observed?
Is the correct amount of oil in the bike? Not too much?
Has it been thrashed or is it one-careful-lady-owner :)
If it has had a hard life, even though it is a bulletproof engine, the rings could be gettng tired and you are getting excess oil in the combustion chamber. They are popular with the 'drive em hard' fraternity...
Do a compression test to be sure... easy and cheap to diagnose.
Posted on Jul 01, 2009
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