Nuge31 Posted April 30, 2022 Share Posted April 30, 2022 Hello, I have a 14 pinnacle, mp8 with an mdrive. It has a shutter in 6,7 and 8th gears while pulling. For the most part I don't notice it running empty. Had mack garage look at it and determined it could be clutch, so I had that changed, no change? Drive line looks good, they want to change injectors next, but I am having a hard time buying that, there are no other indicators that injectors are bad? Anyone else deal with this in their mack? Thank you Quote Link to comment Share on other sites More sharing options...
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