LOCKED UP 5.9 24V Cummins Diesel Teardown. So You CAN Kill a 5.9...

Years ago (2007-2011), I worked as a mechanic for Greyhound. One day, a mechanic said that the engine "JUST LOCKED UP" after he did an oil change. Another good mechanic said I know how I can tell how the engine, a series 60 Detroit, locked up. We went in the pit and removed the oil filters. Both oil filters were brand new and clean with no oil ever passing through them. Long story-short! We assumed the mechanic drained the old oil, replaced the oil filters, but forgot to add the necessary 10 gallons of fresh engine oil. After starting the engine and THEN IT LOCKED UP, the engine oil was added. That is why both oil filters were clean.

Thanks for another one. I'm 62, my kids are grown and on their own and this is my Saturday night entertainment. I say that as a compliment, I really enjoy your show. Best wishes young man.

Suggested fail sequence, 1/ broken rings. 2/ burning oil carbon products polluting lube oil, "spiral down" situation, the more they leak the more carbon produced/oil consumed, may even have led to engine"runaway" event. 3/ oil change intervals not frequent enough. 4/ carbon combustion products in lube oil caused bearing wear/failure. "Maybe", Original filter removed and cut open for examination when engine discovered seized. Replaced with a new filter just to "plug up" the hole for engine removal as no hope to repair engine in situ, having previous experience in similar situation. (Only the guess of an old diesel mechanic).

I've been driving pickup trucks for work for over 30 years. Those exhaust manifolds are the best ones I've ever encountered for cooking lunch. I have done probably 80 meals on that nice big and flat manifold. These days there is so much stuff on an engine you can't really find a good spot to cook a foil wrapped meal.

Well I had 2, 5.9 Cummins and I can say without a doubt that engine was likely ran hard. I had the 2. Valve and a 4 valve both were exceptionally good. My fist was the 2 valve and I put around 500,000 on it and it ran perfect when I sold it. My second had almost 300,000 when the truck was stolen. I have nothing but good things to say about both. All you have to is drive them without your foot in them all the time. My first also had lots of idling time on it. I started it early in the morning and it ran till dark lots of days. Some even 24 hr days. Best engine I ever had. No break downs and no in the shop time. It was used commercially daily.

I love cummins (pre emission), it's amazing how simple engineering can put together such a package and runs for decades

I know exactly the sound this made in its last moments. Cummins diesel clatter, gradually slowing clattering, followed by a loud SQUEAK as the engine locked up and then deafening silence.

18:17 - You pull the filter to cut it open to look for shavings, and then just throw a new one off the shelf on it to cover the hole as you're not sure you're pulling the engine until you cut it open and find glitter

Cannot be a video without Eric fighting the dipstick tube! 😝

Working in a construction shop for a number of years and on heavy equipment it looks like somebody used a lot of starting fluid. Broken rings are a telltale sign of abuse with starting fluid.

FYI....That solenoid on the turbo is the wastegate solenoid. It is pulse width modulated by the computer to allow better boost control. When they fail, they mostly fail open leading to low and/or inconsistent boost levels.

Love your videos and humor. I’m 66 and still work on engines in my garage and can’t tell you how much I enjoy your videos. Keep up the good work. Thanks again.

Just wanted to say thank you. Watching you tear down so many different engines has taught me a LOT about engines. Extremely helpful as always.

I think I commented this in the past, but just in case I didn't... THANK YOU for making these videos! I know it takes extra time and effort to produce this content, and I genuinely appreciate it. I learn something(s) from every video. Thank you!

With all the diesels you’ve been doing lately I think a 6.6 Duramax deserves to be done some justice given how the last one went.

Blue is such a good 'ol pry bar. You should really consider a special retirement package for such a faithful tool.🤣🤣🤣

I've rebuilt dozens of these with nearly the exact symptoms. The injectors begin to fail. That causes the rings to fail. The rings eat the bore. They then begin to either drink oil like its going out of style or have enough blowby to fog mosquitoes. People will throw a bunch of stuff at them hoping it will cure it but its to late. If the injection systems don't kill them then it's typically a.dropped valve seat or erg cooler.

We, your loyal viewers, love what you do and the way you do it. Your self-awareness is admirable, but it’s ok, we’re family! Also, the small, in-the-weeds details are very interesting, and make us feel like we are participating! Keep up the good work!

I started my engineering career at a Cummins facility...5.9B (24v version) cylinder head machining. Good times.

Did you hear about the price of cars in Ireland? They're Dublin.