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Dan
Dan, Technician
Category: Pontiac
Satisfied Customers: 23684
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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2007 Pontiac g6 gt 3.5l 4 speed 121k miles been having

Customer Question

2007 Pontiac g6 gt 3.5l 4 speed 121k miles
been having occasional what feels like a miss for few months now. I pull a single place motorcycle trailer out of state most weekends. after the last weekend now the slight possible miss is more of a hard tug. doesn't seem to be able to power out of it. normally only happens 2000 or lower rpm. start rough in mornings. check engine light came on the other day but went right back off.
I did a tune up at 80k
the trans flush every 50k
tq converter, failing injectors, tune up, mass, pump?
Submitted: 7 months ago.
Category: Pontiac
Expert:  Gary replied 7 months ago.

can you have the code read so we know what code or codes are set in the computer ?

Customer: replied 7 months ago.

Unable to get read or I would have the answer.

Expert:  Dan replied 7 months ago.

Hello, my name is***** on description it sounds like a injector problem. The easiest way to figure this would would be connect to a scan tool that shows live misfire data. Then whatever cylinder is misfiring swap out that coil and injector with another cylinder one at a time to see if misfire follows, if so replace component that misfire followed. Without scan tool you will need to test spark strength and watch injector spray pattern. Let me know if you have more questions, thanks.