REVIEW: Everything Wrong With a 7.6 Navistar DT466 Diesel: What could possibly be wrong with the 7.6 Navistar International DT466 diesel engine?
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Navistar International DT466 diesel engine explained! Here’s everything you want to know about the DT466a, DT466b, DT466c, DT466p, DT466e engine family! Also known as a Detroit Diesel Series 40 7.6l. We talk about AMBAC, Bosch MW, Bosch P7100, NGD, mechanical fuel injection and electronic injection problems!

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REVIEW: Everything Wrong With a 7.6 Navistar DT466 Diesel


Author by: DEBOSS GARAGE

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39 COMMENTS

  1. I have a S1800 right now with the 466 and it is picking out its coolant. Figuring it might be a blowen head gasket. This was really good info thanks

  2. Hi! You make great videos but they would be even better if you'd skip or turn down the volume of the background music while you're talking. It really gets tiring to listen to after a while.

  3. I wonder how much of the navistar 466 engines are based off the the 400 series engines (414, 436, 466) IH used in in their tractors starting in the 70s? Injection pumps and governors are probably different I’d imagine.

  4. How about everything wrong with a 6.6 Brazilian new Holland. I have a 91 with hydromax in 1957 Brockway

  5. We have a 1997 with mechanical injection at work. Thing sits all year and fires up within 3 compression strokes and that's in Maine lol.

  6. Both the International 4700s and 4900s got the DT466. The 4700s could be specd heavy and the 4900s could be specd light. There's really no rhyme or reason to it. I have three of these trucks. One 97' 4700 Rollback with a 466E in it, one 95 4900 6 wheel dump truck with a DT466 mechanical and the P7100 pump, and a 92 4900 six wheel dump truck with the mechanical 466 in it. All three have been awesome trucks. The 95 in terms of power is hands down the winner. That truck will keep pulling faster and faster until you let off the go pedal without caring what's in it or what's behind it. The 92 isn't anywhere near as quick but an awesome truck nonetheless. Slow but reliable. The rollback has a CEL on for a map sensor that i can't pinpoint but its been reliable as well. It weighs 17,700 pounds empty and will pretty frequently have about 10/12k pounds on it. Doesn't like hills at that weight but it hasn't let me down yet. I will run these until i can't run them anymore.

  7. The oil aeration was a problem with the 7.3 also. I worked in fleet and if drivers added thin oil not ment for it the unit would code ICP not as spec.

  8. What happened to – IF YOU'RE NOT FILTHY, YOU'RE NOT RICH – bit at the end of videos ??? That was your trademark

  9. Ive got a S1854 (4×4) 1988.
    Im building a fifth wheel towing rig. Would like more then the 185 hp my motor has. I know you said the MW pump just doesn't have the bore size but can it be upgraded or should I just remove it and adapt it over to a P pump. I'm trying to squeeze 450 hp out of her. Bigger turbo, intercooler, all upgrades needed for it. Motor only has 41,000 original miles on it. Im doing a frame off restore on it with new frame and custom cab.

  10. I am not even a diesel guy, but I did some research at 1 point about diesels in this range. This wound up beig my favorite if I would have built a hauling truck, in the class 4 ish size. Nice to find out my research was pretty sound. Iam one of those guys that wont compromise power over long term dependability

  11. I have a 1991 4600 with a DT 466. I bought a Peterbilt 579 a few years ago and when I change oil I have to jack up the right wheel to get a 5 gallon pail under it to drain. The International the pail fits fine with another 10 inches of space …///

  12. Back in high schoolI went to a vocational school and they had 4 of these bad boys on stands and when I got bored I'd tear one down and tear one down and put it back together. They weren't runing engines but I'd have it down to bare block before lunch and I'd have it back together and everything torqued before I left. Mind you it wouldnt run but that's why it was pulled to begin with

  13. Can you do one of these videos on a Detroit 60s series? Or on one of the newest 2 Stroke Detroit's?

  14. My work had a s1900 with the same engine it was a crew cab service box and a 10 speed dog legged transmission. The only problems that we had with the engine is that the rockers wore a hole in the valve cover, #5 injector hold down kept coming loose making it sound like a exhaust leak, and fuel lines leaking due to age and vibration. Also the air compressor was hard to find parts for in California due to age of the vehicle. It was a pretty reliable P.O.S. really the only reason we got rid of it was from the California emissions b/s and was not able to register it to be road legal.

  15. 500 v8 Mack , I had one that I bought from the Mack dealer in Edmonton AB in 90 with a Mack 12 speed and it dyno’d at 430 in a tandem oilfield Vac truck to the wheels , that truck had the most balls of any truck I have ever owned till this day and literally would sit you back in your seat at low speeds and out accelerate a pickup truck till 130 kph in a roll on from 80 kph , it would also accelerate up a steep hill in an empty van truck which was still heavy . Very quick revving like a two stroke Detroit so must have had a light flywheel compared to a Cat , Cummins or Series 60 Detroit .

  16. Had the 466 and 466E in a pole and bucket truck at my former employer… The thing I really hated about these engines is in super sub 0 temperatures they WOULD start without the use of a grid heater, glow plugs or a block heater.. Many a friggin cold morning we would think "no pole work today the trucks wont start"… I was wrong.

  17. Awesome video I just got a NGD version put in a 2008 super duty @lads_gardens on Instagram for pic's of the swap

  18. Whoever the engineer at international decided diesels should have rubber returns, their mom is a hoe. Sincerly a 6.9l ownder.

  19. You should review a Maxxforce 13. You can start with the everything. I don't know what crackhead at International had the idea to make an engine with 3 charge air coolers, 2 EGR coolers almost as big as the head, and run so much EGR that they can barely go 20k without plugging up with soot, cracking, and dumping coolant into the intake. Absolute trash engine.

  20. AS FOR THE STARTING PROBLEM–
    A LOT OF THESE TRUCKS HAD THE SPRING LOADED KEY START SWITCH BUT ACTUAL STARTING IS DONE WITH A SEPARATE PUSH BUTTON SWITCH!!!
    I WAS SENT TO AN AUCTION
    TO GET 3 I-H TRACTORS!
    SOMEONE WAS SENT EARLIER TO GET THESE TRUCKS BUT THEY DID NOT START!!
    I WAS SENT THERE TO MOVE THE TRUCKS AND WAS TOLD TO REPLACE THE BATTERIES !!
    I GOT THERE AND STARTED ALL 3
    ON THEIR OWN POWER!, NOT EVEN A BOOST NEEDED!!!

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