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  1. 4th Gen Engine/Transmission CUSTOM TUNING
    After a night of pedal pumping the next day i was going down the road and a warning came on defueling hot coolant. Pulled er to the side to let cool off . notice, over flow tank pukeed out its coolant. Head gasket? Probly!!. Just to make sure if its not a air lock . I put er on a grade with a...
  2. 03-07 Performance Parts Discussion
    Had my 03 5.9 apart after dropping a valve on cylinder 6. Replaced the Valves and number 6 piston with all new parts. Replaced all valve springs with BeeHives and hardended retainers. Replaced Headagasket with MLS STD Victor Reinz. Installed ARP studs. After getting everything back together...
  3. 2010-2012 General Discussion
    Hey. Last night driving my truck the hottest coolant temp I saw was 205 and ran just fine. Then this morning I noticed there was a puddle under the front right side so I checked out the coolant resivor and there was more coolant than normal,it is normally by the blue line and i haven’t added any...
  4. 94-98 Powertrain
    okay guys bare with me for the long post but any info is helpful. my 12v started over heating an come to find out the previous owner had a oil cooler go bad and he replaced it but didn’t flush the system. i flushed everything with dawn dish soap an put a brand new thermostat and water pump on...
  5. 98.5-02 Powertrain
    I have a 2002 Cummins with an nv5600 transmission. It has an edge evo ht tuner 100hp injectors cold air intake and double disc clutch. I’ve had the truck for 6 years with no major issues. Then at 280k miles the head gasket started leaking. I took it to a shop got the head machined new gasket and...
  6. 07.5 - 09 6.7L General Discussion
    I have a 2007.5 6.7 6 speed with 176,000 miles, it’s got an H&S mini max and is deleted. It had exhaust gasses in the coolant it never overheated and actually wouldn’t come up above 185-190 degrees unless pulling a grade or towing about 4000lbs. And it was pushing coolant out of the overflow but...
  7. 2010-2012 General Discussion
    Hey all, Sorry if this is the wrong place to put this but its my first post, im relatively new to the diesel game i was highway driving yesterday when i got a p0128 DTC coolant temp showed 176f trans temp was 130f and my intake showed 112f. i havent seen the trans or intake that high before and...
  8. 94-98 Powertrain
    I’ve read as many posts on this topic as I could find, and I think I’m going to have to pull the block and have it checked out, but I want to check with you all, see if I’m missing something. Here’s where it’s at: Had coolant in the oil. Pulled head. Machine shop showed me all the cracks...
  9. 98.5-02 Powertrain
    I have a 2001 mostly stock 24v only 172k miles. I was just recently experiencing a wastegate that was stuck closed that's what I thought. It ended up being the Pitcock air goes through to get wastegate. So it was building a crap ton of boost like 30 -35 and barely hitting it almost 25. Well, I...
  10. 98.5-02 Powertrain
    I have a 2001 mostly stock 24v only 172k miles. I was just recently experiencing a waste-gate that was stuck closed. So it was building a crap ton of boost. I realized the missing coolant like 2 days ago the boost started 3. Today I filled up the Reservoir completely with coolant and checked...
  11. 98.5-02 Powertrain
    just installed new valve spring, headgasket , pushrods, head studs, and rocker arm bolts. I cracked the injector lines to the crossover tubes and have fuel coming out of them, I have 17psi so im not sure why I'm having a crank/no start. the injectors are all brand new as well. does this have...
  12. 98.5-02 Powertrain
    My 01 24v HO blew a head gasket and I’m wondering if there are any differences between the HO head gasket and the non HO. Planning on using the gasket set from Cummins part number 4090035, just making sure that will work for my truck.
  13. 2010-2012 Non-Powertrain
    So just like my last topic, Im not sure where to start. This truck was always my daily, but starting in Nov21 I quit my job and started using the pickup to hotshot oilfield pipe. Limiting this topic just to my coolant and heating problems: Now that its winter, the problems are really showing...
  14. 2010-2012 Non-Powertrain
    If you have already read my other topic, then great - you know the backstory Heat and coolant problems. But... I ended up seeking advice from multiple diesel mechanics, and they all bet on the head gasket. So, this entire past week, I worked on replacing it and I'm hoping successfully did so...
  15. 07.5 - 09 6.7L Powertrain
    Well guys from what I’ve read on here I think my head gasket is dying on me unfortunately. Taking truck to the shop soon but let me know any thoughts. Recently replaced tstat with cummins oem because my heat went out and coolant temp jumped to 230° for a sec then dropped to 170° pretty quick...
  16. 2010-2012 Non-Powertrain
    2012 Ram 3500, 6.7 Cummins, 68RFE, 4x4, SRW 295/60/20, 30hp tune with 56,000 miles on it. Today I noticed a small coolant leak underneath my truck in the garage. Looked up from under the truck and noticed that it was on the passenger side by the turbo leaking down onto the oil filter area...
  17. 94-98 Powertrain
    Ok about 10k miles ago I changed out my head gasket I was leaking coolant from 5-6. So I had the head surfaced new valve seals put in and I went ahead and put a genuine cummins .010 over head gasket with Arp 2000 studs. After the fact I went to a 5.014 injector with 025DV with a 62mm HXsuper 9...
  18. 2013-2018 Powertrain
    Alright, so ive read and researched this thing intensively for several days yet to find a solution. Back ground.. 2018 ram 3500 dually, 320k miles. Fully deleted at 200k with mild tune. Brought in the shop to pull head, throw in some new studs, all new gaskets, tap new exhaust manifold bolt...
  19. 98.5-02 Powertrain
    I was driving to a friends house and I felt a loss of power for a split second. I got to their house and noticed coolant leaking out. So I popped the hood and found there was a pin hole leak in the top of the radiator that was not there before. I also found that the upper rad hose was hard as a...
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