[XfireZ51]

Originally Posted by Dynomite

Concur

I have found in addition to that check valve failing, that the usual vacuum leaks are caused by the rubber connectors getting hard and shrink with age on the ends of the hard plastic lines. If you cannot remove the rubber connectors they probably do not need to be removed. It is the loose rubber connectors that have shrunk and leak. Or.....have disconnected themselves from the hard plastic lines.

Be careful that you do not kink the hard plastic lines by excessive bending.



That fits right in with the connectors getting a bit tighter as they warm up.

I spread a bit of silicone gasket sealer around the joint of the hard line and the rubber connector.
Will also use tie wraps around that area.