DebR Posted September 30, 2025 Share Posted September 30, 2025 77,000 miles. Engine light on, reading misfire C3. Changed all spark plugs. Four days later, engine light back on, misfire C3. Changed coil pack on C3. Filled with mid-level unleaded gas. Engine light back on after a week. Ran gas very low, used a bottle of fuel injector cleaner and filled tank. Engine light back on after a few days, still reading misfire on C3. Car occasionally sputters on start, rev engine slightly and stops sputtering. Otherwise running smoothly, usual pep. Not sure what to do. Anyone else have this issue, have suggestions? Quote Link to comment Share on other sites More sharing options...
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