dieselfuel007 Posted July 5, 2023 Share Posted July 5, 2023 I’m working on an 07 granite dump truck with a 370 engine it’s low miles at 210k and it’s got a miss when taking off at low rpm also when pulling a hill but it’s intermittent our Mack dealer has put all new injectors ,lines, eups ,and adjusted the valves before we did this work it had some injector codes that would come on from time to time now it doesn’t there not sure what to do now they said run it till it gets worse Quote Link to comment Share on other sites More sharing options...
Joey Mack Posted July 5, 2023 Share Posted July 5, 2023 Engine grounds? Really all grounds. You can use the info in the 9-2 service bulletin. Or search through my posts and you will find the book I wrote Quote Link to comment Share on other sites More sharing options...
dieselfuel007 Posted July 5, 2023 Author Share Posted July 5, 2023 Yes my dealer told me to clean the engine grounds when it started but I’ll revisit it and read your posts Quote Link to comment Share on other sites More sharing options...
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