Quote:
Originally Posted by Prospector78
It's an excel cap, rotor, wires, and the plugs are bosch +4's.
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O.K. I seem to recall an issue with the Bosch plugs a few years back. If memory serves, the tang (OR TANGS) on the plugs would break off. But in any case, I would check them for sure.
I don't know for sure about the coil, but I do know about the Cap. Again in my humble opinion, P0300 codes mostly originate in the cap. I learned my lesson the hard way from Old Master about the secondary ignition. Here's why. If you had an issue with one (or two) of the cylinders, you would in all probabilty throw a different code or multiple codes for those cylinders, and not necessarily a P0300 code.
You said you burnt out a coil and just replaced it, Was it the original AC-Delco Coil that you replaced? Can you tell if you have spark to the wires?
I am thinking you have a bad cap or coil. Don't be fooled by the age, something in your secondary ignition is brand new and not working.