Just out of curiosity, how do you suppose a faulty vacuum advance unit would cause the engine to miss as it was brought up in RPM's.
If the diaphragm were leaking, the vacuum advance would be "faulty", but it would now be classified as a vacuum leak wouldn't it. Will a vacuum leak make a engine miss at higher speeds?
I don't see the correlation between the vacuum advance and a miss. If one were to pull the vacuum line and block it at the carburetor and the miss disappeared, case closed! I don't think this would happen.
But as many can attest to, I have eaten my fair share of CROW before!
Stuart
