What is your question?
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What is your question?
Car runs well after I added super octane fuel.. but I added High octane fuel for a long trip and after 175 miles and a FILL UP (93 octane- supposedly) suddenly started "stuttering" again as I'd get toward 60- 70. Stopped and purchased STP fuel cleaner/additive..(the good stuff) NS IT GOT BETTER..but engine light did not go off. Still sputter a bit. Is it FUEL or is it emissions?
1 Reply
Sounds like an emission issue, or it could be clogged fuel injectors. You can have the injectors cleaned with a DIY product from most auto parts stores, or have it done by a dealer. This usually corrects the problem. Depending on the milage of your car, the injectors may need to be replaced, and again you can do this yourself.