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B smoke out petcock

N

Nick m

Member
This is little embarrassing, and probably
cost me some money, but this happened. We
have a 41 b. I had the carb rebuilt. Put
it back on while carrying on a conversation
with my wife. Forgot to hook the linkage
up. It fired up and raced to full throttle.
I ran around the other side and pulled the
plug wires off the mag in a quick panic
like action. Hooked everything back up, and
tried again. Fired right up and ran
normally, but pumps some blue smoke out of
the #1 side petcock. Never did that before
this. Theres no smoke out of the exhaust,
and doesn't seem to be building any
pressure in the crank case. Runs great.
Good power, no weird noises. What happened?
I've only ran it a few minutes.
 
Highly doubt it's a carbon issue. Didn't do it last week, does now after incident. Also, engine doesn't have 2 hrs on it since the head was off and gone though. All was clean then.
 
Probably nothing to worry about. When you pulled the plug wires it was still spinning over so it kept sucking gas into the engine so the cylinders could have gotten washed down a bit with gas. So now your seeing it burn off that gas that got down into the rings. Run it an I bet that smoke will go away
 
(quoted from post at 12:56:44 08/03/18) Highly doubt it's a carbon issue. Didn't do it last week, does now after incident. Also, engine doesn't have 2 hrs on it since the head was off and gone though. All was clean then.
Click to expand...

"Carbon" was a poor choice of a word, I guess, Point is, there's gas/oil/goo in the bottom of the cylinder and you haven't gotten the engine warm and WORKED it enough to burn it off, hence the oily, smudgy smoke.

Once again, "RUN it and WORK it, and warm it up"!
 
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