Engine and Transmission

6,384 topics in this forum

1. Low oil pressure at idle when truck is hot

   By chana1634, May 31, 2020
   • 22 replies
   • 4.3k views
   • 
   • mechohaulic
   • June 6, 2020

2. Engine problems

   By Jgore, June 1, 2020
   • 3 replies
   • 993 views
   • 
   • Jgore
   • June 1, 2020

3. E7 to E6

   By Straydog954, June 1, 2020
   • 2 replies
   • 1.1k views
   • 
   • Straydog954
   • June 1, 2020

4. Single to twin cyl compressor up grade ?MP8

   By fjh, May 31, 2020
   • 1 reply
   • 798 views
   • 
   • HeavyHaulinMac
   • May 31, 2020

5. T673?

   By Bigdogtrucker, April 27, 2020
   • 19 replies
   • 3.5k views
   • 
   • Freightrain
   • May 30, 2020

6. Water pump

   By eddeere, May 24, 2020
   • 9 replies
   • 1.6k views
   • 
   • BAD DOG
   • May 30, 2020

7. D12 injector cup leakage? Again?!

   By steeler, May 28, 2020
   • 3 replies
   • 1.4k views
   • 
   • fjh
   • May 29, 2020

8. E6 4V injector

   By mack88, May 27, 2020
   • 6 replies
   • 1.5k views
   • 
   • alex g
   • May 28, 2020

9. '69 R611ST

   By Mudman089, May 26, 2020
   • 4 replies
   • 1.1k views
   • 
   • fjh
   • May 27, 2020

10. 94 MR tachometer

    By HeavyHaulinMac, May 26, 2020
    • 0 replies
    • 592 views
    • 
    • HeavyHaulinMac
    • May 26, 2020

11. Ljswx engine

    By bwoolbr, May 26, 2020
    • 2 replies
    • 1.2k views
    • 
    • j hancock
    • May 26, 2020

12. Harmonic balancer

    By Ejones, May 26, 2020
    • 3 replies
    • 1.1k views
    • 
    • HeavyHaulinMac
    • May 26, 2020

13. Fuel line size E-7 400

    By Ak47, May 23, 2020
    • 16 replies
    • 3.2k views
    • 
    • Mack Technician
    • May 24, 2020

14. Mack Ami & ai engine brake thread

    By R.E.D, May 16, 2020
    • 3 replies
    • 2k views
    • 
    • JKuhl
    • May 24, 2020

15. 85 Mack Morse Shifter Panel needed

    By Mack458, May 22, 2020
    • 2 replies
    • 1.4k views
    • 
    • Maxidyne
    • May 22, 2020

16. 1993 Mack 688s E-7 350hp

    By Jaison, March 19, 2020
    • 4 replies
    • 1.3k views
    • 
    • Joey Mack
    • May 21, 2020

17. Vin #'s?

    By QCDriver, October 10, 2009
    • 14 replies
    • 5.1k views
    • 
    • BigPoppa3
    • May 20, 2020

18. My Eaton 8LL is not going into high range.

    By sonoran rock trucks, May 5, 2020
    • 9 replies
    • 14.5k views
    • 
    • j hancock
    • May 20, 2020

19. Clutch Brake Adjustment 1 2

    By Flat Work, September 28, 2017
    • 28 replies
    • 17.2k views
    • 
    • HarleyD
    • May 20, 2020

20. E7 250 /allison mt654cr. Hp boost

    By Warden, October 20, 2015
    • 21 replies
    • 5.4k views
    • 
    • HarleyD
    • May 16, 2020

21. 13 speed transmission fill plug.

    By Eliott, May 14, 2020
    • 3 replies
    • 2.8k views
    • 
    • fjh
    • May 16, 2020

22. 2006 CHN of exhaust.

    By JKuhl, May 16, 2020
    • 1 reply
    • 960 views
    • 
    • alex g
    • May 16, 2020

23. Mp7 dead pedal at times

    By alwaysbehind09, May 15, 2020
    • 0 replies
    • 913 views
    • 
    • alwaysbehind09
    • May 15, 2020

24. Hand Primer pump for E9

    By ws721, May 14, 2020
    • 5 replies
    • 1.9k views
    • 
    • david wild
    • May 15, 2020

25. Miss rough idle

    By mackey58, May 4, 2020
    • 12 replies
    • 1.1k views
    • 
    • mackey58
    • May 14, 2020