From:james frymire e-mail:frmirej-A-dobsonteleco.com
Subject:RE: RE: RE: RE: RE: RE: Lots of White smoke out exhaust Date:Wed Jan 23 20:02:25 2013
Response to:18159
Something to think about is the crank seal may be leaking trans oil into the crank case. Smoke may be getting better because oil getting low letting air in which would affect power.

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The oil mix IS a little strong and the 30 yrs of no use was my reasoning also. Ive been messing with it at night, so today I started it up in the daylight so I could see the color a little better, looked white to me and not as bad. Im thinking its cooking off whatever its burning a little more everytime I run it and it just needs to be ridden.
But she started backfiring today(this is new). Also, when I let off the clutch to go, it loses power. I have to rev it up , then very, very slowly let off the clutch while really getting into the throttle to get it to go without going dead. Then while riding, I can shift to 2nd, and 3rd gear but the power is weak(very weak in 3rd) . Im wondering if its a timing issue(backfiring) or maybe just a carb/throttle adjustment.

One other thing I've noticed, is that it is a little slow to react to the throttle, even when I pull it by hand at the carb. I thought this may help diagnose the problem.
Thanks for your help Doug. Its much appreciated.


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You may have to much oil in the gas, fuel to rich in oil. That is really OK if all it does is get extra oil into the crank and piston assemblies un-oiled for 30 years. Or you have the correct mix with the oil they originally recommended, often we use the newer oils formulated for burning in 2 strokes. Note the Harley oil was designated by part number not the weight of oil.

You might check your fuel mix, look down the exchange to message 18000 and its responses, or look up fuel-oil mix in the search feature.

Personally I'd think a few runs with to much oil in the system would be a good idea but you may have to re-tune after you stabilize the mix.

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I ran it some more tonight. seemed like it was getting a little better. I also realized its been dark every time Ive had it running so I wouldn't have been able to tell the difference in white and light blue.. I'll check it out in the daytime. It does seem worse when I really rev it. I just assumed more gas, more exhaust, no matter what color. I

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further Kieth, in one position both the intake into the crank chamber and the exhaust ports are open. It might have just built a drop of condensation a month and the crankcase would build up a lot of water in 30 years.


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White smoke is usually water vapor though light blue from choking or over fueling the air/gas mix might look white. Did the engine run rough, blow white smoke and slowly smooth out possibly as the smoke diminished? If so there may have been water in the crank chamber white gon water gone. If it started with light blue and the warmer it got the more white the smoke became? You may have heated and vaporized the puddle in the bottom of the muffler, stand the bike slightly on it's tail if water is still coming out let it drain then start again. Doug

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I bought a 165 for myself recently. Its past owner said he's known of the bike since 1984 and never saw it run. He had it as a display piece.. Anyway, I didn't have too much trouble getting it running after shoring up some wiring and cleaning the carb and tank. However, it has a lot of white smoke pouring out of the exhaust. Is it just burning off 30-40 years of whatever or ???? Any advice on what else it could be or a solution? Thanks for any help