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From: Eddie m.
Email: imperial57
Date: April 05, 2002
I know that engine all too well! Depending on year, the timing is usually(stock) at 10 BTC. If the advance is more retarded than 10BTC, it will ping, especially if one does not run premium fuel. What is happening with the new distributor, is that it is advancing far more than was intended, and its a hotter spark. That hotter spark, is causing the pinging because the fuel you are using can not resist pinging. The vacuum advance is only aggravating the situation by giving more advance. Either recurve this new distributer to a more stock setting or run it without the advance. But that won't help you much down the line. I'd get a regular advance Electronic Distributer.
