RUNAWAY DIESEL ! Wouldn't Start Now It Won't Stop! Kubota Mini Excavator 

Awsome video fellas, look forward to the next one.👍

black smoke = stuck on full trottle.

Didn't seem smokey enough for running away on the oil imo.

It will be great to see the we digger dig again under its own steam

Love it, "That was a bit spicy guys"!. Pass me the heartburn tablets. 😂She was in self destruct mode then😮 Great work again boys, keep the videos coming, very informative.👍🏼

At some point it's obvious you'ld check the radiator for water if you're going to run it.

Wow interesting guys

Thanks for the videos on the KH41. I have the identical machine that has a ROPS vs a cab. My machine is in use on a regular basis. I purchased it used in 2006 with 2600 hours on the clock and it now has.just about 4700 hours. It appears your engine is worth saving even for another application. There is so much rust and determination on the machine it may be beyond restoration. I live in Nova Scotia , Canada and cold starts have never been an issue but cold starts need glow plugs year round. I can still get parts from Kubota including final drive. New tracks easy to get so I’ll keep the machine as long as it goes to work, it will probably outlive me and I am 83.

I use a piece of wood over the intake to stop run away issues. Also pull out the engine to work on it to make it easier . We had a stuck engine on the Cat 951 that not been run for 15 years. We ended up doing a rebuild in the end. We found that a pump barrel segment was stuck stopping the rack from moving. Waiting for better weather to refit pump segments .

Marvel mystery oil could possibly help y'all out with that Kubota Diesel engine stuck valve's and rocker arms and lifters to.

Yes! On part 3! Stuck governor sounds right.

Think you might be right about the stuck rack. When running away on oil the smoke is usually much more grey, where as here it is quite dark.

Just stick a blowlamp in the intake for a good pre-heat Would agree that a check of the injector pump is the next course of action.. I think running at that speed would have definitely freed up the rings!

I've worked around many of those small Koboata diesels and they are super tough. Going full rack and running at valve float RPM's for hours on end doesn't even bother them. I've seen many do it due to the rack linkage or springs in the governor breaking and surviving being run like that for days just fine.

You can mix it in with your transmission fluid and acetone mixture to. It's known for freeing up stuck Piston oil rings and other types of things like that to. For instance let's say such as oil pumps and fuel pumps and stuck fuel injectors and fuel racks.

The first thing you do on a diesel engine that turns but hasn't been started for awhile is open the oil pan plug to check for water in the crankcase. Then you check and free up the injector rack to prevent a runaway engine if it does start. 3rd you pull the valve cover, push down hard with your hand on each valve spring to see if the valves are moving. If one is stuck, spray some lubricant and hit it with a hammer until it recoils. Then work it until it's free. Next check the fuel filter, clean any gunk from it with diesel or a cleaner, fill it up before installing it. Drain the fuel tank or set up a temporary tank then flush the lines, and bleed the air to the filter. Pull the oil filter and rinse that out. Check air filter. Check all the electrical connections, wires to the starter, alternator and ignition. Hook up the battery, turn it over and bleed the injector lines until there are no more bubbles. Most people stop bleeding them as soon as they see fuel come out and tighten them back up leaving them still full of air. If it does not start right up, pull the injectors and check them for a good spray. Clean them and an engine will run if it has compression. that can be checked when the injectors are out. I enjoy watching these startup videos but the guys who don't follow a proper troubleshooting procedure waste video time cranking an engine over and over without any result and washing the cylinders with starting fluid. Be an efficient mechanic, don't bore and irritate your audience with a bunch of chatter. Mechanicing is very rewarding when done properly. If an engine is frozen with rust, tear it apart. Impatience is not in the vocabulary of a proper mechanic.

check the fuel pump it might be the rack or a stuck linkage

I have a complete parts manual so if you need a page of any area of interest let me know and I’ll email the page(s) you would like.

The rack is stuck

Defo spicy that startup, isn't the kubota engine a relative of the Yanmar 3 te series? if you're gonna look at the pump (on Yanmars i've always found it's the governor that gets stuck) it looks like it's cab off time, would be good if we could see how big and what shape the hydraulic tank is (would give more access to the engine as well) as we might have a hydraulic tank knocking about that might be suitable if you want one.

You put 20ml of engine oil in each cylinder and then were surprised when it ran away. A diesel will run for about as long as it did on 60ml especially when mixed with the diesel. I wonder how much oil and diesel was sat in the dish on the piston?

*Promo sm* 🍀