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Original Message
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| If you're not pinging, then it's good. |
| By Dave Shoe - 07/31/2001 6:40:47 PM; IP 12.2.11.131 |
Pinging is the danger when you advance the distributor timing. If ignored, pinging can generate excessive cylinder pressures and eventually cause severe engine damage. Pinging also tends to accompany a general power loss, due to all the misplaced cylinder pressure.
You might try advancing the distributor further until you start to hear pinging - just so you know what the timing is set when it becomes a problem. Then dial it back to where it runs best for ya.
Note also that the distributor advance curve will sometimes prevent pinging under load at low RPMs but enhance it under load at high RPMs. The reverse can also be true. A reasonably calibrated distributor will tend to balance the timing so the engine will start to ping under load with both high RPMs and low RPMs at about the same octane. If your car is quiet, it's easy to hear mild pinging, allowing you to dial the distributor timing right in.
JMO,
Shoe. |
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