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I know it’s time consuming but. Have you tried a swap?Bad ecu?

yup sorry bad choice of words!

Did you run compression/ cylinder balance test ? Or do You assume you have a bad injector! have run into the odd bad valve!

You need to post the engine number MP7 or 8! You likely need to rebuild the oil separator on this or just replace it!

I'm a ''Negative Nelly'' when it comes to MP's.... Jojo Yup Me too!

Yup ! replaced more that one in the day! And the W model was even worse!

Still think PTO how ever as Joey states Is a hard call ! That fact you hear it in neutral says something to me, Its in the main box and it only telegraphs in direct when driving ! just my thought! Check the drain plug for chunks and get some one to double check the Ptos in my opinion! Wouldn't want to rip a trans out with out evidence!

Remember these first years of super liner was Derived from a W model cab over! Hence The model RW ! which also had the steering box on the axle the drag link is out of view on the back side and is about 6ft long ! MH frame was used on second gen RW!

My opinion the inline is more resilient! I personally like the v pump for its simplicity! And had worked more with them saw a fare few failures the in-line was only use several years at the end!

This is one of those occasions where loose is better than too tight! Bet you need to add a 15 thou gasket to one or both!

I would check the backlash on the pto s. First! joey great minds ! 😂

huh didn’t see the post bro! Just saw this one 😂

Turn grade gripper off see if that affects things!

Bad or sticking injectors! As for boost leaks! The Best way to check for leaks is to pressure up the the whole engine ! build an and adaptor to plug off the intercooler at the turbo side! Apply Shop air regulated to 35 psi thru the after cooler and engine ! And turn the engine by hand till pressure starts to show on the boost gauge assuming it has one! Believe it or not! there is a point in the engine cycle the everything is closed momentarily! when you hit this point! you will find almost any leak you want to find even bloby past the rings and valve guides you will hear from the oil filler neck! ! Is the compressor plumbed into the intake hose ? These fail at the Joints at the hoses where they connect to the manifold and the compressor (common failure} ! A look see is not the best way to check!In my opinion you have one of three things there , in order of importance .> a Bad boost leak , lazy turbo ,or bad injectors !however I'm not there so I can't say for sure! don't apply the parts Cannon untill you confirm the boost leak theory properly! The lazy turbo is a tough call cause its its the most expensive and doesn't happen often ! last resort! Just sayin!

In my opinion that engine if it was fresh should easily do the job! After all your not racing it! If it has issues Fix the issues and leave the rest alone! Black smoke indicates lack of air or too much fuel! Have you checked for boost leaks !??? does it have a lot of blow by? For the job its doing it sounds like a lot of work to go thru to get a basic job done! When all you need to address is address the issues IE: a set of a set of injectors or a turbo and or some boost leaks! Whole lot cheaper and less time consuming! Also the 300 has a pretty large torque curve due to the fact that there is and Allison behind it! 460 not so much! I have seen a 427 with an Allison ! I am just thinking about time vers result here! What you purposing is doable but worth while ????? Just saying!

Team effort Bro!

Double flanged hub? Or the stud has a flange on it ? I have seen both setups! You will likely have to remove the hub to get the drum off to remove the studs !

Thanx for Askin Joey! Yup finished up this morning I got six hours of pottering on this project including the screw up with the first Cyls! My eager apprentice and my self managed to get it bled down with one bleeder screw couldn't get to the right hand bleeder! Theres a jumper between the two cyls with a check valves in them had trouble getting the air out of that and resetting the rods on the clys so the oil wasn't trapped But once we got those two issues worked out things work as they should!😁 Stops on a dime now! Didn't realize how bad it stopped before till I got both sides working!🙄 Even took time to replace the fan belt while the machine was down !was dreading that job too ! The drive coupler was seized to the pump managed to get that with my air hammer and some help from a neighbor on the end of a long pointy bar!🤣The belt was almost as much as the cylinders up here ! 80 bucks! 140 for two Masters!

The problem is lack of experience unfortunately the books can’t replace experience! Been there done that multiple times helps speed things up! Some one always becomes a Guinea pig at some point! These guys are start over where us guys have been already!on the ac aset these guys are reading from a book no real world experience! Rattling off a bunch of BS they know zero about! The MP engines had a learning curve the new guys coming along are learning them and their quirks some guys just keep following the computer screen some will innovate and come up with solutions! An quicker ways to get the job done!

Experience based diagnostics ! Multiple codes for all six usually evolved into a fuel transfer pump issue ! Low fuel pressure! Not always but most times!

Well At the very least you have learned where not to take a truck for repairs! ANY TRUCK! Can't imagine what they would have told you had you brought them a Pete with a Cat or Cummins engine in it for repairs!🙄May be they would have you change out the Air in the Tires or something@ 150 an hour ! Sorry this Happened to you! Not all Mack dealers Are like this How ever now a days its hard to find reputable people to work ! You'll see multiple complaints on this site By a lot of us on this subject! Good luck with your truck hunting Bro!

The whole deal stinks of BS ! Volvo brain! They are trying to baffle you with BS ! Just sayin! Don’t know what else to say! I have nothing good to say so I won’t!

AI B.S. Click Bait!

HA Ha ! I grappled on to several wheels once in pack rat Mode ! They got made into a saw mill! 🤣

There are lots of tsb on this subject ! None on F**kn injector Cups On E7! Granted the Volvo turds screwed up the service bulletins like they did to the parts system ! probably hid them some place! Now I think on it these guys where his truck is fit right in !😡