Love hate relationship with my Mack.

I have an 08 Pinnacle with the MP8. I broke down in OH Monday and finally got the call from the Mack dealer that I need all 6 injectors. I'm being told that I have an older style injector with copper tips and cups. I guess 2 of the cups are cracked and all the injectors are in horrible shape. For 8 months I have been getting horrible fuel economy and almost no power.

The shop is replacing the injectors with conical injectors. From my understanding, I should see a huge improvement in power and fuel economy.

Can anyone explain the difference between the injectors? From what I understand, the conical injectors are a complete unit?

 

I really hope so. At this point a any mile long grade makes me downshift and heeded to Omaha, there's a few hills I have to drop from 13 to 10th.

 

I was told since the conical injectors are one piece, I should have anymore injector issues. At least not the same problem with the copper cups. I was planning on getting rid of the truck, but it this point I have new clutch, clutch cable, rebuilt trans, radiator, AC condenser, turbo, fuel pump, power steering pump, power steering cooler, shocks, tie rods, dpf delete, and numerous other smaller items........i might just have to keep it.

It's like buying a glider, one part at a time.

 

I was doing the math in my head. Over the last year since I bought this truck, I have spent almost as much in repairs as I paid for the truck. Difference being, I was able to finance the truck purchase.

 

I can not believe the difference in power. I had 3 mechanics tell my they were amazed that I got 800,000 out of the old copper lined cops & injectors.