Quote:
Originally Posted by 29spcoupe
Could be spark knock. If your spark is advanced too far the spark is occurring before it should, thus fighting the piston travel. See if you retard the spark a little if it goes away. If the pinging starts when you first advance the spark, then your timing is too far advanced.
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As I stated before if I retard the spark fully or near fully the snapping sound stops. With the advance lever set about 1/2 way and if I go very easy on the throttle, no noise. Add throttle and the snapping begins.
I set the points between 20 and 22. Checked the timing with an ohm meter. I think I'm quite close. Is it possible for an engine with 4 1/2 to 1 compression ratio to 'ping'?