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2006 Pontiac G6 Base 4dr Sedan w/1SV

2006 Pontiac G6
Trim Info:
Front Wheel Drive, 4 Door Sedan, Compact
23 mpg city / 34 mpg hwy
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April 4, 2012, 5:21 am

Thomas T

Question: Misfire on cylinder 1

I have a misfire on Cylinder 1. It started out with 2 codes. first was p0301 and a code for Bank 2 sensor one O2 sensor. I replaced the sensor. Still had the p0301 code and found a bad o ring on the fuel injector. Replaced the fuel injector. Still have P0301. Since then i have replaced all plugs and wires, had ignition coil checked (OK) Had compressiojn checked. LOW PRESSURE IN CYL 1 WHILE RUNNING. They checked the exhaust and intake springs and both were good. Im running out of ideas. The shop wants to do a $1500 valve job but they don't know if that will even fix it :( any help would be much appreciated **NOTE- CHECK ENGINE LIGHT DOES NOT STAY ON AT ALL TIMES. I CAN FEEL IT MISFIRE WHEN IDELING AND THE CEL ONLY COMES ON WHEN IT'S AT IDLE. **

April 17, 2012, 8:14 pm

Richard W
Expert Mechanic

Before I did a valae job I would replace the coils and modual.

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