REFLECTOR: Severely rough-running Franklin

[Hiroo Umeno]

So...

I gave my plane its first oil change.  It has about 10 hours now.  As expected with a newly overhauled engine, there are some very fine dark powder mixed in the oil.  No big chunks or shavings.  So far, so good.

After the oil change, I tried starting the engine.  Using the primer, I tried a few times and just could not get it to run consistently.  It will fire and do an uneven "shakes and rattles" and after a few seconds, it will die back down.  One time, I got it to run for about one minute but the running was rough and really uneven and would not idle as it used to.

Subsequently, it just will not go beyond a few rattles and shakes.  My wife observed a faint white smoke blow out of the exhaust stack when it "rattles" and a few times a darker smoke subsequently.

What should I look into?

Hiroo

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