Jump to content

wiserfrombud

Big Dog
  • Content Count

    129
  • Joined

  • Last visited

Community Reputation

73 Excellent

About wiserfrombud

  • Rank
    BMT Veteran VIP
  • Birthday 03/19/1978

Profile Information

  • Gender
    Male
  • Location
    Beausejour, Manitoba, Canada
  • Interests
    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.

Previous Fields

  • Make
    Mack
  • Model
    CXU 613 505c+ mp8/1860 tq/13 sp Eaton/Mack rears/twin y
  • Year
    2016
  • Other Trucks
    2010 kenworth T660, 86" studio, 485 ISX/1850 tq. Replaced a 2005 379 Long nose Pete, 63" High Rise 475/1850 Cat Acert

Recent Profile Visitors

1,357 profile views
  1. wiserfrombud

    Pressure in expansion tank

    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. wiserfrombud

    Pressure in expansion tank

    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. wiserfrombud

    Pressure in expansion tank

    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. wiserfrombud

    Pressure in expansion tank

    Low coolant this morning......so it continues.....
  6. wiserfrombud

    Pressure in expansion tank

    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!
  7. wiserfrombud

    Pressure in expansion tank

    And yours turned out to be cups? It was pressurizing the coolant tank like that?
  8. wiserfrombud

    Pressure in expansion tank

    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 getting it back with a 2mpg loss in fuel mileage and getting the shoulder shrug from the dealer afterwards.
  9. wiserfrombud

    Pressure in expansion tank

    It is CERTAINLY worse when workin er hard and getting it hot.
  10. wiserfrombud

    Pressure in expansion tank

    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.
  11. 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.
  12. I am fairly certain the f8 fuse is blown then. Just have to figure out which solenoid it is.
  13. 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?
  14. And if you replace the fuse and it pops again, its likely a bad solenoid on that bank back by the 5th wheel.

Welcome to BMT!

...The world's best antique, classic & modern Mack Truck support forum! Founded in 2000, BigMackTrucks.com is the place to go for everything related to Mack Trucks!

BMT!

BigMackTrucks.com is owned and operated by Watt's Truck Center, New Alexandria, PA. This forum and it's contents are not affiliated with Mack Trucks, Inc. or Volvo Trucks North America.

×