Check engine light - cylinder 1 misfire

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dro45

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2009 Yukon. Check engine light goes on and off, so I plugged into the OBD2, and used the Torque app on my Android phone. Came back that the #1 cylinder was misfiring. Chased that down and found the various possible causes, most of which involved possible wiring or plug problems. However, it also listed dirty injectors.

Never one to waste money, I decided to try fuel injector cleaner first. I ran one can of Techron fuel injector cleaner through one tank of gas. Light has not come back on since, been 3 weeks.

Just thought I'd share in case anyone else is seeing the same.
 

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