has anyone had an issue trying to use a vacuum bleeder on any vehicle? I'm using one on a 06 X5 3l. For some reason mine isn't pulling full vacuum and kinda tweaking out at 15 hg and I heard air leaking underneath the intake manifold near the engine. If I use a pressure tester it'll hold though. I'm curious if the head gasket or something is busted where pressure holds, but vacuum doesn't.
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vacuum bleeding coolant system - inf22:23:19 09/02/16