Pending misfire concerns on subaru. No cel and not noticeable

Asked by May 20, 2017 at 11:50 PM about the 2005 Subaru Impreza 2.5 RS

Question type: Maintenance & Repair

I have a pending misfire on cyl 4 of my vehicle. my car is a Subaru four cylinder. I don't notice any performance issues or shaking of the engine and the CEL is not on. I plan on taking a long road trip (500 miles) in only a day. I am worried I will hurt my vehicle. Should i still go?

2 Answers

74,565

If you have the time change out the plugs and wires before your trip. In any case you won't hurt your engine if it develops a miss.

98,555

Yes change the plugs, fuel filter and if time change the oil and filter, then during the fuel fill up add a bottle of Techron to the fuel this will help clean out the injectors as you drive on your trip. I only run Checron or Texaco fuels in my vehicles and so far(knock on wood) I have never had any injector problems, spark plugs have always looked clean when I have checked them. HTH

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