I got me a Tahoe!

[Gearz]

You say take it to a tuner but I don't have a local tuner? I have to rely on the internet.

 

[21highcountry]

I did it! I got her home. My first Tahoe, a PPV. She's a 2014 with 150K on it. Ice cold AC BUUUT it has a Cyl #4 misfire. I swapped coils, new spark plug and wire on that cyl and no change.
When it was idling today, I can smell raw fuel and it had a little white smoke, but smelled no coolant or oil. I looked and noticed the air filter was FILTHY and the MAF wire inside was black. I pulled it and cleaned it, put a new air filter in. Still smells a little like raw fuel but not really smoking now. I'm wondering if the MAF sensor is bad. I'm guessing the #4 lifter is bad and thats why the code is there. I'm debating just putting in an LH9 6.2L non AFM and having it tuned instead of doing the AFM delete etc.

This thing was stationed in West Texas its whole life so it was disgusting dirty. I got the rear cop box removed, started cleaning everything real well.

Stuck open injector, I’d bet if you pulled the plug and put a camera into the cylinder that the injector is just dumping fuel, smell your oil to make sure there is no gas in it from the fuel getting past the cylinder rings, good luck.

 

[Nutro]

Already swapped to a good injector on that cyl and still have misfire on #4

 

[Fless]

I'd suggest a test for exhaust gas in the coolant. Kits available to use on the coolant surge tank.

 

[Nutro]

Yeah I'm going to try that next but wasn't sure if they had a kit to use on vehicles without a radiator car