You have a bad injector. Not uncommon on 6oh's. They have finicky injectors.

If you pull the valve cover and find damaged wires, then fix those and repeat the buzz test before you replace the injector.

But I think you'll find the injector has gone south.

 

is that whats causin my shitty gas milage?? i'm gettin shitty milage but when the truck gets up to operating temp. it runs strong and is fast as ****. but even when i drive easy i still get the shitty mpg? i pulled up 2 other codes once but haven't seen them again. they were codes that said contribution/balance fault for cylinder 4 and 8....

 

Boy, those 6.0's are problematic, aren't they. Good luck with this, and keep us posted.

 

The valves in the top of injectors will by pass cold thick oil when they start goin south, so once the truck warms up it'll run fine sometimes.

And it could be part of the reason you're gettin bad milage.

 

I'm at 116k miles so i have no warranty left and i don't wanna be throwin money at things that aren't causin my problems... Where should i start and what should i do to find the exact poblem quikest?

 

How often do you change your oil?

 

bout every 4,000 give or take 100 miles maybe

 

6oh HPOS maxes out at 3500, so it's extra hard on oil. Bad oil tears up finiky injectors even quicker.

Without the truck in front of me I can't be 100%, but I'm 90% that new injectors will fix the problem.

 

A full set of new injectors?? do you know where i can get em kinda cheap? or a good place to get cheap high performance injectors?

 

Elite Diesel is kinda leadin the way with 6.0's last I knew. You might give Innovative Diesel a call, if he can't get your injectors, he can definately point you at the best deal. First Coast Diesel Performance is supposed to be another good shop for 6oh's.

I wouldn't buy stockers though, most of the time you end up payin as much or more for stockers as you would for some mild performance injectors.

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And I doubt you need a full set, but if 4, and 8, etc are havin issues, the others aren't far behind.