Quote:
Originally Posted by Brentwood Bob
The distributor should not, IMHO, be firmly tightened at the head, but the retaining set screw on the side of the head that keeps the distributor in place should be tight enough to hold the distributor. There is a notch on the bottom of the distributor casting that the set screw captures. Too much down pressure on the oil pump driver can bind the cam and cause a rapid knock that you might be having. I suspect this since you may have removed the distributor recently and disturbed it.
Bob
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This is very interesting to me. I've been having what I describe as a rattle coming from my engine. I've not checked if perhaps the distributor shaft is too long, causing the binding you mentioned. I will check that for sure!