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Originally Posted by geezer
you mean how the gz petcock is different from other non vac petcocks? sure, leaving a normal one open wil let fuel flow past it if you have a leaky needle valve, depending on carb placement (above, Below, Next to the intake manifold) fuel will drip past into te cylinder, past the rings and into the crankcase. even th vac ones can fail if the diaphrame goes
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Agreed.But I was talking about a vacuum operated petcock,which the majority are now days.Also I have never seen a non vacuum petcock without a "off" position.
:cool: