Fix P0300 misfires on GM 4.3 Engines with Distributors
Worn distributor teeth can be one of the causes of P0300 misfires on GM 4.3 Engines with Distributors. If you have a high mileage vehicle with
this engine and have changed the plugs and wires, it may be time to pull the distributor to check the teeth. Worn teeth are either razor sharp or worn down. Replace with a rebuilt distributor. You will have to retime the engine and may have to cut a notch into the hold-down bracket to get the correct camshaft timing.
© 2012 Rick Muscoplat