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Big Dog
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About wiserfrombud

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    BMT Veteran VIP
  • Birthday 03/19/1978


  • Location
    Beausejour, Manitoba, Canada

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    I have been driving since Aug 1st 2001, Bought my first truck and trailer in June 2004. A Million and a half miles later I am looking to purchase my third truck. I run the I 15 corridor to California and back.
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  1. Meh. My Cummins was multiple camshafts and dropping liners, The Mack is injectors and cups. They are all shit when they are broken. As of now I would still buy another Mack. I cannot say the same for a Cummins.
  2. This morning the overflow side of the expansion tank is empty as it should be and I cracked the cap and there is no pressure......dare I say my problem has been resolved? I think it might be.
  3. Just an update. Brought the truck back to Mack for round two of diagnosis. Confirmed combustion in coolant (even though it looked fine visually) They tore into the top end. Ended up getting injectors, cups, seals, new buttons....blah blah blah.....along with a lovely bill. 6500 CAD. Those are pics of the parts. The #5 injector was actually BROKEN. Apparently it was "dancing" around in the cup and letting combustion pass. Just heading out. I sure hope with this kind of a repair, this issue is resolved.
  4. Powertrain wise, I have the 505c+ with a 13 speed. I only run up and down I 15 from Cali to Canada so I have plenty of pulls. I am always 80,000 lbs and this thing pulls great. I was actually a little leary of a 13 liter coming from a 15 475/1850 ISX and a c15 ACERT 475/1850 before that. This 13 would run with either of those engines all day long and get better fuel economy doing it. With the 18 spd, I couldn't imagine you being underpowered even for 100,000 lbs. Unless you are currently driving something with 800 horse.....
  5. And it was a pressure cap for the win! Funny how something as simple as that can cause such grief. And no trip to the dealership is complete without ALL the latest and greatest software updates!
  6. And yours turned out to be cups? It was pressurizing the coolant tank like that?
  7. I'm not disputing, just want to diagnose as best I can with the info I have. Dealership is quick to change 15 grand worth of parts when its on my dime. So cups you figure? Truck cranks 2 or 3 times and fires right up all the time. And wouldn't coolant look scuzzy if cups were bad? Or see it in the oil sample or SOMETHING!? There are no signs of anything wrong internally in the motor other then the pressure and a reputation of cups and injector issues...the truck runs phenomenal. I'd be lying if i said it didn't make nervous for a shop to be monkeying around in top end in fear of ge
  8. It is CERTAINLY worse when workin er hard and getting it hot.
  9. Seems random. It won't do it for a day or 2 and then boom, puke out a half gallon on the ground. EGR cooler should show elevated potassium and sodium in the oil sample. This truck being a 16 has steel injector cups right? I guess it is possible but I didn't think it was likely.
  10. Just an FYI.....in my truck it has that warm air recirculation flap under the hood. It opens when the ignition is off and the solenoid pulls it closed when you start the truck to pull fresh air through the hood vents. After I replaced the blown fuse, I opened the hood and watched the flap. It didn't cycle and the fuse would pop. I flipped the switch on the dash to recirculate (open position) and no more blown fuse since the solenoid wasn't being activated. Was fine until I got it home and changed that solenoid.
  11. I am fairly certain the f8 fuse is blown then. Just have to figure out which solenoid it is.
  12. So....this is going on... both sides of expansion tank are full. Seems to be pressurizing the tank and puking it out of the overflow. I pulled an oil sample. Not burning coolant. No coolant or diesel in oil. Coolant in tank nice and clean. Truck runs perfect. Is our money on a compressor?
  13. And if you replace the fuse and it pops again, its likely a bad solenoid on that bank back by the 5th wheel.
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