Thread: timing - it PINGS !

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Originally Posted by jerry clayton

first thing to do is to check the timing and see where it advances to total at 3-4000 rpm(what ever rpm it stops advancing at)
It should be less than 40 and probably you will have to back it down to 35-36 before you get rid of the ping--when you get it backed down enough that the ping is gone, check it to see where it is at at the higher rpm and also at idle rpm--you may have to recurve the advance in the distributor so it won't be lazy off the bottom rpm

Hey Jerry,
I know the old springs & weights method, and I know the spark map method of the ECM control method, but how do you accomoplish re-curving with an electronic distributor that's not computer controlled. I missed that piece in my ignition education.