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Misfire Cylinder 3 P0300

Compression Thanks for response. I thought it was spark but then I bought a proper spark tester for HEI. and all sparks are reading normally. I had an erratic spark but the first tester was bad. I believe I found the culprit to my problems after redoing the compression test. 1=180 psi 2=100...
- Etch
- Post #23
- Jan 6, 2024
- Forum: Engine Performance + Maintenance
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Misfire Cylinder 3 P0300

I know this an older topic, but I was hoping OP found a solution. I too am dealing with the same problem and I am at wit's end.
- Etch
- Post #21
- Jan 5, 2024
- Forum: Engine Performance + Maintenance