Mack 7th injector.

Ok folks. I bought a 2013 mack pinnacle with the mp8.
I've had it for about 3 weeks. I was heading from Atlanta to Columbus Ohio lost all pulling power. Then it eventually shot out several codes. Required a parked regen which didn't happen. The truck derated and I was towed to Somerset ky. When they got the truck it was automatically assumed that the injectors were bad and were replaced. Less than 1500 miles later all the same codes came back engin derated to 5mph. Now the truck is in okc volvo mack dealer. They first told me it would be Friday or Monday befoe they could even diagnosis the problem. After catching a ride from a friend back to houston they call me today the next day and have it figured out. They say it is the seventh injector. $1484 to fix. It appears $870 for diagnosis. Sure seems like a lot of money to see what the problem is for a $100 part. Could I assume that if this don't fix the problem they will refund the diagnosis money.
Does anybody have a suggestion on what might be hand In hand with a bad doser.

 

Yeah when I talked to Somerset the service manager told me he thought it was the nox sensor..
I said why didn't that get fixed or looked at. Go figure.
Also I talked to the volvo dealer in Memphis tn where I bought 3 weeks ago they said they might help me out. I'm not holing my breath.

 

Yes you are right on the injectors. It ran $4300. They said the codes were a common sign of bad injectors. Also I did fail to mention it was starting real hard. the injector cups are a common problem. With this motor.

 

[QUOTwcnsper, post: 5734917, member: 138171"]I would say pull the radiator cap and drive another truck under it but then you might be moving a problem to the new truck.

I have had so many issues with Mack's that I have driven, you would have to give me a fleet of them so the scrap could buy me a different brand.

I will never own a Volvo made Mack.[/QUOTE]
Well its what I have now. But I can see already your frustrations with them.hopefully my luck will change.