[61_FL_Apache]

Yes. My Ho runs great!!

I did clear the codes many times and 0300 was the only one to return. I only saw 0306 once.

So from this checklist here, This is what I have covered so far.

Common Problems That Trigger the P0300
Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable) Changed all
Incorrect ignition timing - Computer does this, I dont think its adjustable. I know the dizzy is in a fixed position
Vacuum leak(s) - No visible broken vacuum lines
Low or weak fuel pressure - 55 psi when tested
Improperly functioning EGR system - have not checked this
Defective Mass Air Flow Sensor - have not checked this
Defective Crankshaft and/or Camshaft Sensor - changed crank sensor.
Defective Throttle Position Sensor - have not tested this.
Mechanical engine problems (i.e.—low compression, leaking head gasket(s), or valve problems - these have not been checked.