Quote:
Originally Posted by JFP in PA
If you are getting P0300 series misfire codes, your coils or plugs are most likely the issue. I'd start there. And if this is the case with the codes, the Durametric is not going to tell you any more; you need to start doing close up diagnostics to ID the source.
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Thanks.
Is it likely that 3 or 4 would go faulty all together?
Is there any test I can do before buying replacements and just swapping out parts?