What I did in a nutshell. I cracked my plugs a quarter turn and soaked with carb cleaner over night. I dumped the cleaner in hole. Then i reattached my COPS(coil over plugs) ran the car to heat up. When warm I used a 3/8 air impact wrench to remove plugs. Not all of them came out clean and I...
Hello, I confirmed the cat was shot by my mechanic. He dropped the exhaust and it was plugged. What made me suspect it, was a popping noise when misfiring. I could hear the pop on the passenger side. When it popped it also "whistled". The cat was all ash inside and it created a small hole...
My 07 threw same codes. Turns out it was the passenger side cat. Did not through a code that indicated the cat. Anyway I replaced both cats and codes fixed. What hinted me to cat was it "whistled". I then ended up replace coils and plugs from summit for 300 bucks. Used accel coil pack and...
Phew
I just did my plugs using the impact wrench method. Only broke 2 and they were up front. What a job! I'm making it a yearly maintenance item to remove the plugs clean them and reapply anti seize. Truck runs a ton better! Had 96k on (my assumption) factory plugs.
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