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B20 crank case ventilation 120-130

Hi all,
I've recently completed an engine overhaul on a 1970 amazon 122s.
Once started, there is vacuum from the flame trap that is mounted on
The side of the engine.
Is this normal as I always thought the flame trap would push
Crankcase air out?

Thanks in advance






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New B20 crank case ventilation [120-130]
posted by  blueb20  on Tue Sep 6 13:55 CST 2011 >


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