CAT 318 with a stuck governor or fuel rail trying to bring her back to life. glad i was ready or things could have got real bad cus there ant much room in there.
cat made there own motors they about about 10 hp. i think it's the horizontal apposed that make them sound so loud plus there running at 3600 rpm when all right. it dose need some more tlc but i was just trying to get the big one running so i could move it home.
You are brave for being in there but you were prepared. Also after reading some comments I figured out what was going on. I didn't realize you had a pony motor starting it.
If I was you there, I would have probably messes my pants and would had runaway as fast as I can to whatever place I could that was the furthest away from that engine. Nice that you could stop the beast in time!
wow that is flipping scary man i would not go in a room that tight with a internal combustion engine that was that old and when i am trying to bring it back to life
He was anticipating it and was prepared to deal with the problem as soon as it occurred. If I were in his (literal) position I would do the same thing.
At the school I go to, we've got a 51 liter CAT V-12. It was pulled out of a tugboat because it no longer met emissions standards and was basically a giant paperweight for CAT, so they donated it to the school as a working standalone unit. It has a massive 150 gallon oil pan, and it produces 1200 horsepower at 1200 rpm redline, but has an emergency override top speed of 1400 rpm. The engine will tear itself apart, but it allows quick movements against current to catch a runaway barge before it plows into something like a bridge or a levee.
You are talking about a turbocharged engine that can run away from a bad turbo seal causing the engine to self propetuate. This is obviously a normally aspirated engine, so no turbo. He had a stuck fuel rail which will not throttle back the fuel delivery once the engine reaches its governed speed. Depending on where the fuel rail is stuck, it can give full fuel delivery until connecting rods fly into the stratosphere. Stuck fuel rail can actually run away higher than fed from turbo seal
it took me a while to figure it out, and im not sure i have it completely, but the engine that's running threw the video is some kind of generator for starting the big CAT behind it right? its sounds like a small single cylinder gas motor.
Some of the generators i work with have Chalwyn valves for this purpose, cut the air intake and the engine chokes itself without any mechanical damage :)
It seems like quite a few people are mistaking the gasoline pony motor for the runaway. Pony's are for starting the large diesel and are generally this loud, it is functioning normally, the diesel only runs for a little while
High power diesels often 'dope' the air with propane to boost torque. Failed propane regulator and you have an explosion hazard from backfire and runaway. Fun stuff I learned from my air-dale buddies when I was in the navy
Technically yes, it is called 'dieseling', but only with a carburated engine with a crank driven fuel pump. I had a '70 Benz 280SE that had a bad habit of doing so when it was shut down because the mechanical fuel injection pump was off timing. It would eventually stop when fuel supply pressure dropped since it was fed by an electric fuel pump. Dieseling is an indication of dangerously lean fuel/air mix in a gasoline engine, but is being developed as an intentional highway operation mode.
@sivalley... I had an old '77 Ford Highboy with a 300-I6 that would do that quite often when i cut the ignition off. The engine would actually run backwards when this was happening. I found this out the hard way one day while trying to get it to quit, i put the trans in Bulldog1st and held on the brake a bit... The plan was to let the clutch out and kill the engine but it shocked the hell outa me when the truck lunged backward. I was puzzled as hell till my uncle explained it haha
not always !! . i had a injection pump fail and pour fuel had to crack the injectors to get her to stop , and he did try snuffing it with the clip board
one thing u do not do is use starting fluid to start any Diesel engine use liquid wrench,PB BLASTER if u use any of these u can use a LITTLE BIT WITH any of thoes things
i am the kid and i not a kid. second it was not cold cus i let every thing warm up plus it had oil pressure that why i fire up as soon as i closed the decompression vale. go and try that with cardboard and see how far you get.
ya i did not wont to take a chance and let things run but i know it run now so that all good do a little more fix and we be good i turned the sound way down before i upload it you have to be there to hear how load it is in the tin box.
This comment section is awful. "You can't run away a gas engine!!!" Probably because that's the pony motor you hear to start the diesel engine behind it. Idiots.
How the hell was that a 'runaway'? It wasn't even HOT. All the kid was doing was starting it from cold with the pony and then choking off with the cardboard, a few times when the governor apparently wouldn't cut in!!!!!
For most people, if the engine runs away, so do they. For people who know about diesels, they suffocate the engine and shut it down. You have balls to let the engine keep running.
Fucking runaways... Can't believe how there isn't a mechanism to stop this stupid self-destructive engine behavior. However I think it's a diesel inlet control problem and not a genuine runaway and you were a bit nervous if I'm not mistaken. I'd be equally nervous in such a small place and such a big motherfucking imposing son of a bitch engine. Let it gain some more RPM to see what happens. You still have that clipboard to shut the air intake
My grandpa was working on a semi that sat for a few years. The thing ran away and he had an emergency shutoff. It was a spring-loaded shutoff and the thing was from the 70's
its that little rrooaaaaaAAAAARRRRRRR sound you hear in some parts of the middle of the video, the sound that u heard the whole time was just a tiny engine trying to start the MAIN engine that kept running away when he got it started
Big guy there is 3 other video of it running on my channal caterpillar 318 in a nothwest 25 D running ,walking out of it's grave and swinging a northwest 25D
