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tassinari reed valve blowback

Posted: Mon May 04, 2009 10:33 am
by Ihateyoubutler
Just put a new reed block and manifold on to my engine and noticed that when I turn the engine over by hand, there is a definate blowback of air out of the manifold (with no carb on). Is this normal? It is a new block and reeds.
Thanks.