Re: Pinging
You need some time to make some small adjustments relative timing. You probably need to find the "sweet spot" for your set of running conditions. I am assuming you have a zipper distributor which is very sensitive to small changes in rotor position. My guess is you are too advanced and need to try repositioning the rotor so you are slightly retarded. Another thing to check is to see if the distrubutor has unknowingly moved. This is a problem I had with mine which Mel at FS said to grind a point on the end of the locking screw. This seems to help but I plan to remove the set screw, spot the location with a marker, remove the distributor , and spot drill a small dimple in the base. This should prevent any rotation.
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