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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15181
Experience:  GM Grand Master Technician 2007. 14 years experience.
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2009 Chevy Aveo with a slight rough idle. Replaced plugs

Customer Question

2009 Chevy Aveo with a slight rough idle. Replaced plugs only a few months ago. No plug wires to check for resistance. Don't know if there is a way to test the coil pack. And trying to locate external in-line fuel filter.
JA: When did you last fill the tank? And do you smell gasoline around the engine?
Customer: It's my daughter's car.
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: She has about 1/2 tank left. I told her to fill up with highest octane to perhaps fire cleaner, and consider using Marvel Mystery Oil, as it is high mileage. Yes, trying to resolve on my own. Haven't done anything yet.
JA: Anything else you think the mechanic should know?
Customer: Whether to consider other electrical components...
Submitted: 3 months ago.
Category: Chevy
Expert:  Jared D replied 3 months ago.

Are you getting any trouble codes along with the rough idle (check engine light)?