Q: Running Rich

asked by on September 10, 2016

My scion is throws a check engine light, for running rich I was wondering if there's anyway to fix this. I took it to a couple shops and they get the light to go away but they don't fix my problem. I do have an after market exhaust on my car. I was wondering what symptoms you would get because of that.

My car has 130500 miles.
My car has a manual transmission.

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