Rick's Free Auto Repair Advice

Posts Tagged: engine misfire diagnostics.

Engine misfire diagnostics

Engine misfire diagnostics The most common causes of engine misfires are worn or faulty spark plugs and faulty ignition coils. For more information misfires, see these posts first. This post picks up after those and covers other engine misfire diagnostics. How spark plugs work Diagnose misfires Other common causes of engine misfires The wrong spark plugs • improper cylinder pressure caused by ring or valve wear • high or low ambient temperature • improper air/fuel ratio • improper valve timing • fuel quality • carbon deposits. Let’s examine each of … Read More


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