SSL658 ~ how to STOP a RUNAWAY DIESEL on a BOAT

[@JohnLee-im7iu]

Very informative interview. I did not know Diesel engines could become runaways. Nice solution to the issue. Thanks Captain Rick. You are doing a great job!

[@CaribooMiner]

Crazy! All of our equipment in the oilfield have the positive air shut off to stop a runaway disaster like that. The more you know!! Thanks Captain Rick!

[@donhowell3372]

just think of all the Blown engines that could have lived longer lives

[@scottg6799]

Thanks for the follow up video. It's nice to see a KZbinr following up a video with a solution.

[@dennisreeves632]

Great stuff Capt. Rick. Thank you for investigating this issue.

[@stevethompson9062]

Hi Rick, Steve from Alberta Canada To get any equipment into a live plant or commonly any industrial site you must have a positive air shut off so that after it is set you have to manually reset the button to restart the engine. You can have multiple positive shut off’s on your Diesel engines. Eg…in the cab with a machinery, or the outside where someone walking by could shut it down for you. The fire triangle is…oxygen, fuel and heat. The main to shut off is oxygen, this way it is not sucking outside fuel source such as propane, or butane, leaking gases from your turbo. If you starve the engine of oxygen you kill the fire triangle 😊

[@richb313]

Glad to see you found an expert in that situation and also the means to control it.

[@gw4410]

I have watched most, if not all, of your maintenance videos, because I like to know how things work. This video on the causes of diesel runaway hits close to home for me as I have a truck and a tractor that run on diesel fuels. Thanks for pursuing this phenomena....

[@Ritlee]

Scary situation... with a relatively inexpensive solution... a car or truck having a runaway diesel is one thing... but when your home is what has the run away diesel that's a whole other story... Thank you for this video, something I will be investing in, when I invest in a boat...

[@VintageVehicleAdventures]

Great video I posted about a positive air shut off on your last video and like I said I had a friend a month ago lose a seal in a turbo and it ran away on him…..just so you know it doesn’t matter how new your engine is as my friends turbo only had 1000 km on it from being replaced with a new one. Fuel shut off doesn’t matter as some have said because most of the time it’s oil from internal or turbo and not fuel but without air it’s stopping.

[@dc1544]

Good to know it goes after a turbo to help turbo from exploding. I love learning thanks Captain Rick. I do have a diesel truck that is chipped and having a safety cutoff of air could save my truck.

[@realulli]

Most common cause for a runaway is the turbo bearing letting go and the engine running on its own oil. At that point, it's purely mechanical and your chip can't do anything. Positive air shutoff is cool, but not necessary. Technically, anything that blocks the intake (enough) can stop it. It might not be the safest option (as Chase said), but it's possible.

[@jm5150]

It sounds more and more that in the Freds case was the external fuel source, most likely oil, was combusting and causing the smoke.. most everyones first instinct is to disengage the engine but this is what can send the engine into runaway. Nuetral "allows" the engine to runaway. keeping the engine engaged at very low rpms is what should be done, never nuetral. shutting off the air intake should be step 2 to choke it all out. I believe Freds smoke issue was his external fuel source but since his engine was engaged it wasnt running away yet. Once he disengaged, it allowed it to do so and made the issue worse. its like trying to put out a fire with gasoline. this was a FANTASTIC video and im glad you took the time to present this to the community. Not only will it save lives, but the responses to the video help to point out even more techniques and scenarios to prevent catastrophe. Thanks Rick. I hope most ppl look into these trype of products, the advantage and even "peace of mind" far out weight the investment.

[@CharlesinGA]

Transport Canada has required automatic positive air shutoffs on Commercial diesel engines since January of 2018. There are a good number of players in the field of diesel engine stop systems now, and those systems are even available for diesel pickup trucks from firms such as PacBrake.

[@SVPearler]

Nice find, looks like a great system. Was not sure, did he say a manual cable system be integrated with the auto system? Did get the manual switch bit. Just thinking if all electrical power is lost. Be very rare, but you never know.

[@svlonestar7645]

I started my Perkins the other day and it started to rev up in idle.. I freaked out, and pulled the choke! 😲

[@uncommonsense9395]

I remember when I was a kid my dad had a boat in the 45 foot range with twin diesels. It was wooden boat with a planing hull. I couldn't tell you what it was or what engines it had but the way you shut down the engines was a plunger on the top of the engine boxes that turned a butterfly valve similar to a throttle body has that starved the diesel of air. That was 45 or 50 years ago. I guess that was the manual version of this automatic system.

[@TheOverproof151]

Sounds like a positive investment in boat insurance!

[@jamesk8198]

Thank you Rick. Excellent video. We really appreciate the Cruisers College series.

[@amyw.2190]

Good info Capt. Rick! These videos may out live us all. Great job!

[@noddybray]

a decompressor working on the exhaust valves will work, plus if you have a tricky battery you can spin up the engine then throw off the decompressor to start the engine. I got a guy to weld together and mount a decom camshaft in the rocker cover .. if you also mount a keyway on the crankshaft to take a starting handle you can then start the engine by hand, it worked a treat on my boat.

[@donnakawana]

Captain Rick surviving 2 fires in one year rite be4 pandemic. This Runaway diesel has been on my mind.. You've answered all my questions an the young fellow who explained an answered your well thought out questions... Your brilliant Captain Professor 😊... I really enjoyed this installment of cruisers college.... Thanks for this information again, Thanks for sharing your life with us ✌🏼💗😊

[@Bantie1]

Rick, I sent your video link of this episode to one of my sailing groups I belong to. I did not ask you first, but I presumed that you would not mind since it should give you more views of this episode and maybe more Patreons? I hope. This is a major safety issue that most people do not know about and there's already a lot of "what if you do this? or that" being debated within the sailing group. I like the gizmo (LOL) that attaches to the engine that automatically smothers the air intake.

[@AUTiger1964]

Rick, I am surprised if the phenomenon of diesel engine runaway is so well known the engine manufacturers do not provide the emergency shut down devices as OEM/add ons or manufacturing the engine for optional retrofit of aftermarket systems. The problem of a runaway diesel is scary as hell, even more so on a cruising vessel in the middle of the ocean!

[@MickLay]

Good point!

[@MadShadow_]

It occurs more to older engines as mentioned in the vid, so either a lack of oversight in maintenance or something else that degrades with in the engine which causes it. I reckon if a new engine has that issue could perhaps due to metal fatigue in seals, and it may not be easy to always quality check things like that. Or assembly error. Ships/Boats require allot of upkeep and engines in smaller vessels are usually in narrow spaces. So there are allot of things that can work against you. So there is an average number or Statistic on how old an Engine can go run away at an established age or mileage ( Or both) And probably also part RNG. So either way the smart thing to do is when you buy or get an older boat always check the engine especially if it hasn't run in ages. But budget reasons can skip these assessments as well. And seeing Diesel engines can run forever before they even run away, people hang onto it forever as well. And if not most, only some go nuts and eat themselves.

[@Mar-vu9nx]

Of course not! Because it rarely happen. Exclusively by wronk operation, or total leack of proper maintenance! Rick are not interrested to bring the facts to his chanel.

[@camerazeye7923]

Thanks Rick. I dont have a boat but i have watch many "tech" videos and build videos and i think this is the best one you have put together as well as one of the most important ones that should be considered.

[@Tenright77]

Interesting Rick. Amot is a heavy industry and oil company valve set supplier. Considering as you are seldom more than 5 seconds away from your helm when the engine is operating I would insist on a Manual Pull / Cable operated shut off. Additionally, you could tie in a Fuel shut off valve as well. From Aviation; Aircraft Fire handles > Close Fuel Valves, Stop Electrical, Close Hydraulic Valves, and Enable Fire Suppression Systems... Good Luck on the project.

[@georgelewis8904]

Good stuff, most important, have seen two runaways, industrial engine's both had runaway protection witch did work ,shut down preventing further damage.

[@realulli]

Rick: 7:40 the perfect thing to plug the engine intake would be one of the wooden bungs that you carry to block broken through-hulls. Depending on where the intake is located, it might be easy. But, as Chase said, you have to get close to an overspeeding engine...

[@PepeDeezNutz]

You first

[@donlindell1994]

Great safety video Rick. This should be standard issue on the sea.

[@dougfaulkner6799]

Grew up around big industrial diesel engines and they were all equipped with mechanical shutoff valves as well as RPM shutoff valves. Its a small price to pay in the event of a runaway. I would reccomend multiple ways to engage the valve personally because no 2 scenarios are the same and the more options, the better.

[@richardburger3350]

Rick, Thanks for clarifying this issue. Fortunately, my Yanmar 3M is unlikely to be plagued by this problem. I will still look to the diesel shut off cable as a start.

[@daveyoung3880]

Good idea the positive air shut off. It combined with halon would be perfect. Especially when engine room has generator, webasto heater ,engine and all electrical components.

[@carlforsander5184]

Probably should do a video discussion on automatic fire suppression systems as well.

[@mikeh.4010]

Hi Rick, another great video with very useful information. Just wanted to restate that it is helpful NOT to disengage the transmission. Notice all the engines used as examples in the video are completely free running with no power being taken off via transmission. This was my experience one day. Motoring at fairly high revs. Engine note changed and rom began to increase. At the same time I noticed excess smoke from the exhaust. In the space of about 20 seconds I 1) throttled off and went to neutral, engine immediately sped up. 2, tried to shut of fuel through shut off solenoid on the panel, no effect. Rushed down below and tried manual fuel shut off cable, no effect. Rushe back on deck and slammed the engine into gear at low throttle setting. Engine immediately began to slow and over the course of a minute or so returned to normal speed and after a little longer the smoke cleared and the engine settled dow. On checking later, we had used almost a litre of lube oil. I have worked out why this happened in the first place. Suffice to say an overhaul is required to remedy the cause. There was no possibility of blocking the air intake due to the nature of my installation but engaging the transmission definitely saved the day. Another observation, engine max revs normally 3000, estimated over speed maybe 4500. There are other variants of my engine that run up to 4000, so I wasn’t too worried as the engine speed stabilized at 4500. This may have been due to the oil supply being regulated by the crankcase pressure relief valve. Mine is a non turbo engine so the only path for oil to the inlet manifold was via the PRV.

[@SpareRoomSlotCars]

Hi Capt Rick, what a dreat follow up video to you last one. You have some great connections. Thanks for sharing

[@Jammer.1]

Rick you can do it yourself the install and the crank censer since the prop shafts direct drive you can mount the pickup right by the rear the motor !

[@MetalDetectingwithCZkidd]

Grew up with FJ Toyota Jeeps. The classic ones. Last one we had, diesel, 4 cyl. To turn off the engine, one of the knobs on the dash was a simple pull knob that had a valve icon on the end of it, you simply pulled it and it closed the intake valve. Engine off. Just make one up and as a manual.

[@clarisd]

Life saving equipment and the more you know!! Thank you Captain Rick and Co!!

[@jonathanvince8173]

Oh wow this is so interesting I had diesel cars did not know of Runaway engines it can happen to any modern diesel. Seeing this and a company perhaps others too that make safety valves to stop that from Happening is amazing to me. Thank you Captain Rick and Chase at Amot.

[@smithjoe4590]

GREAT segment Rick on an item sometimes over looked talking to a expert on preventive maintenance!

[@MarkTaylor-hv9oe]

I have worked around diesels for 30 years and have a friend who went to diesel mechanic school. At their training facility they had to assemble and disassemble a large diesels and he said that a burst of a fire extinguisher in the intake starves the engine for air and stops it instantly. Said at Nashville Diesel it was a requirement to have an extinguisher in hand on rebuild start up just for that purpose.

[@gtsteven1]

Hello again Rick, I wrote you regarding this runaway engine and you answered and said to hit you up on telegram. I did. My thought here is that you need a remote manual linkage that does not depend on the electrical system. At the first sign of trouble, strangle the airflow. In your engine with that type of air cleaner, my suggestion is to add a very short extension with an integral butterfly valve just under the air cleaner. Don't drill the block or mess with the high pressure manifold past the turbo. That is asking for trouble. Another approach is to make a simple sheet metal can that fits over the air cleaner and seals it enough to block the airflow. The vacuum of the intake will help form a good seal if you incorporate a gasket in the design. Again, a manual linkage to engage it is necessary. It can be mounted so that it falls into place over the air cleaner. The butterfly in the stovepipe valve is slightly akin to a balanced spade rudder, in that you must mount it so that the vacuum hold a it closed. Safe sailing, keep smiling.

[@JohnLee-im7iu]

Left a comment yesterday and got trolled. They left a message in my email saying Rick was wanting to send me something and he wanted to chat on an app called telegram. The person had rick’s picture on their message but didn’t know details about the show. I tested them by asking questions that I knew were incorrect. Rick….thanks so much for wanting to send me a iPad….lol

[@samaeri]

I had an old Yanmar that ran away. I believe the engine had been getting fuel from the oil sump. I was working on it at the time so I was able to stuff a rag on the air intake. It's definitley alarming to say the least. Was probably sucking in oil through a valve. My present Universal 35 has a manual air choke, that is how this particular engine is designed to be shut down. I suppose then no worries here in the event of a runaway The Beta ,at least the one I installed on my previous boat has a solenoid activated electronic choke. I learned that when I got water siphoning through and filled the bilge up to the wiring harness on a heavy day crossing the Monterey bay. Water got into the wiring harness ,when I got into the harbor of all great timing in Santa Cruz, the salt water interrupted the wiring signal in the harness and shut down the solenoid. No engine, no wind. My boat ended up pin balling against the jetty rocks. Not a great ending to an exhausting sail. I love Beta but I love more the manual choke. I'm sure the Universal has other electrical that could easily shut er down as well though. Boats, ya never know all you can do is your best to mitigate untimely or timely disasters. 95% percent of my sailing is trouble free. Its not if it's when when sailing. Just the way it rolls.

[@_plinse]

We changed the air-filter to one allowing us to mount a hose and link it into the locker so we have access without opening the engine compartment. I can press a towel in the hose, while I'm in the cockpit. In the same place I have installed a valve to cut diesel supply. I would not want an automated shut off. You might get into tricky weather, you need full power from the Diesel and I experience the Diesel rev up due to the Propeller in the air. You don't want the engine to be shut off then. I never experienced a run away Diesel but I have experienced several situations where the Diesel at full power got me out. I don't want an additional risk on such situations.

[@tangoreal9098]

CO2 fire extinguisher point at air intake pull pin pull trigger problem solved. So get one and keep outside of engine compartment

[@peterstarkey1360]

Well l have to say , that certainly sounds like & looks Super EASY to install...& drilling & tapping the bellhousing for the sensor , again too easy...l see this as a relatively low cost MUST HAVE Insurance policy & You could rig it as an Anti Theft Device if someone was trying to steel you boat (engine won't start)....So , NO BRAINER...cheers👍😊

[@pontoonrob7948]

It would be nice to know if there was a high pressure hydraulic system of some sort in his engine room. The smell of smoke before the runaway could have been a rupture high pressure line misting and fueling the main engine. Either way amot is used on the fishing boats here.

[@johnrathbun2943]

Thank you very much for this information. I will be in the market for this device when I get my sailboat.

[@Joshua-dw8wu]

Super interesting Rick, both the story and the solution.

[@rexstiger6090]

I wonder if an engine is taking a load, like a prop or transmission gears, how that effects the tendency to over-speed when shite hits the fan? It seems like most videos of this happening the diesel is in neutral versus in gear.

[@NightshiftCustom]

you can also use the drive shaft or crank pully for your sensor instead of drilling a hole

[@theoldman8877]

I am aware of a diesel engine runaway in a flower mill Flashing on the discharge system of the grinding section of the mill was bad and leaking. The air filter was removed because it kept getting clogged with flower dust. One day the flower dust was sufficient to fuel the engine and cause it to runaway until it exploded. It turned out the faster the engine spun the mill the more dust in the air , more dust in the are more speed . Not a good day . Lots of flammable types of dust around flowers, sugar, wood. I used to do an experiment when training new firefighters where we would take an old metal coffee can with a pile of flour in the bottom and a candle inside we would put a hose under the flower. One quick puff of air the flower mixed with the air the candle lights the flower and boom.

[@theoldman8877]

Rick do you have a telegram account. I think it is a scammed.

[@georgepaget5748]

Rick. Again I will relate my 3GM30 Yanmar runaway engine. It was caused by a leaking fuel pump which let diesel fuel into the crank case. My new engine is a Beta 25. Without my shop manual I assume that it is a similar design as the Yanmar. Its diaphragm should be replaced every five years as a precaution. George

[@tbfrance76]

Add a Chalwyn type valve to the air inlet, it will automatically shut the engine air supply if the engine speed exceeds the limit you have set it to. Simple method used on rigs and refineries

[@gregvaughn4286]

Never heard of this. Thanks Rick

[@samgentile7494]

KISS. Keep it simple stupid. A simple manual cable at the instrument panel in the cockpit routed to the air intake valve works absolutely fine, without the need to any sensors or speed/rpm controls, Our 1984 J-30 with a little 2 cylinder Yanmar came from the J-Boat factory with air shutoff cable. Anyone can do it themselves using a regular engine control cable if their vessel does not already have an air shut off. Basically, it is sort of like a Choke cable found on many older engines hooked to the butterfly valve on the air intake. Relying on electronic components will never be as failsafe as a manual air shut off.

[@henrikgormsen1020]

Back in the days, on mechanic school, we had a teacher in engine theory and praxis training, who always wore a sixpence. We studens wonder why, until a day one of the truck diesel ran away. It was a diesel engine in a floor frame, so we could work easily on it. My mate tried to stop it by putting his hand on the intake, but it broke his hand. Then our instructor took his sixpence and throw it into the intake, and it ate it.... It choked a little on it, and finally died.

[@roncapo1917]

Great video sir. Well done. Hey, where is your family, coming home soon?

[@donhowell3372]

thinking maybe might be a thing to talk to Atlas / Kabota and sea if Atlas can come up with the right parts and guide ... why does the flywheel need to be used for monitoring engine speed when the front Harmonic balancer / pulley might be an easier place to adapt the magnet sensor and also a cable operated manual lever from the cockpit would be a great backup .. be a big job of much discomfort ... to drill out and tap a thread in a cast iron engine block .... for the sensor

[@simonpickles3633]

Thank you for doing the research it was a great vid and it gave me more understanding to stop this happening

[@MegaOriginalSinner]

Rota Deaco positive air shut off with a toggle switch at helm. No need for fancy rpm switches.

[@theoldman8877]

Runaway on turbines engines also happens if hydraulic oil or lubricating oil gets into the engine hot section from any source .

[@pontoonrob7948]

A question that would be nice to have answered: Say this mag speed pickup develops a fault, the engine is actually fine, does it flip the flapper and you are dead or does it default to no protection so at least you can still run? Is there a manual override so you can pin it open and stay running if it it wants to shut the motor down in error?

[@RajeshSingh-Bhangu]

Thanks for this very valuable information

[@johnhibbs6508]

Thanks for the great channel!

[@georgecarney3083]

Rick after watching both videos, I have come to the idea to prevent the possibility of run away engines. Would it be in the interest of the manufactures to place a pre drilled hole over the flywheel that is bolted close. Then offer the ability to have the shut down feature sold built in to the engine on purchase or have the ability to be able to install the device in an aftermarket option. I do believe that all marine engines should have this feature in two parts, installed on a new engine or the ease to install aftermarket.

[@Lana_Warwick]

@SailingSophisticatedLady Hi, new sub, catchn up on ur vids. Recommend installing cold air intake (similar to a truck). Current location is drawing heat & hydrocarbons. Also provides better economy.

[@johnmccormick175]

Very interesting i never knew that could happen wow!

[@jonrichardson4641]

I had never heard of the runaway before. I wonder if this also affects farm equipment ? Good information to know.

[@disabledglobalchallenge290]

Anything fitted with a Diesel engine is at risk!

[@brentclarke1841]

Bravo great video,, This valve is good ideal...👍⛵👍

[@davidyendoll5903]

Are you a West County lad living in my areal ! Brill

[@ericdelevinquiere9902]

Great advertisement for electrical propulsion 😊! You probably already have rpm readout that you can use and program a relay to activate the valve. Cheap enough that way.

[@davidyendoll5903]

This is absolutely reasonable so long as electrical power is still working .

[@stpstudios]

Stay Safe Captain Rick! ⚓✌😺👍⚓

[@svequinox6513]

I have a newer Beta engine on our boat, I've installed a halotron fire extinguisher in the engine room, it should remove oxygen from the area so would this be an effective way to stop a runaway diesel engine?

[@steveshoemaker6347]

Does the flywheel need sensor on it to read to the RPM sensor ? Don't you already have a RPM read out on your engine ?.... Just saying.....Sound like it would be great to have on your engine......Thanks Cap for the very interesting video...Bye

[@jamesaleando2529]

The most common reason for runaway is improper operation and neglect of service schedule. Resulting in fuel entering crankcase. Piston ring bypass. When sufficient to reach turbo it's forced vier air intake resulting in runaway. This problem is compounded on small sail boats using main engine for generating electricity over long periods at low rpm. Glazing of the liners occurs.

[@jamesaleando2529]

@captainrickmoore512 Hi Rick do you know make and model of runaway. ?

[@zoranjefic9281]

I’m truck driver ( from Kitchener ON), last 25 years, on diesel engine , and i have 4,5 milion miles driven ( or 80,000. hrs) My experience is , (preventive maintenance) , change or rebuild TURBO every 20.000 hrs. and you want hawed problems at all . 😀

[@outlawjjsmith]

My Question is let say you have installed these components on your engine and they have sensored a situation which has shut off the engine while in the middle of the ocean, then what? Are you stuck without an engine? And so now will have depend on your sails to get you to a port for repairs or what ever it will take to fix the problem.

[@snfow]

Most likely cause is turbocharger seals collapsing then oil pump for turbo is fueling the motor, had it happen to me on tractor, got showered with hot oil, managed to drive frontend loader forks into ground to stall motor.

[@1sheinz]

This seems like this would be amazing, Thanks Rick. BUT should this not be cable controlled like a choke cable and be mounted in the cockpit, completley manual no electronic failures and false activations. CHEERS AND FAIR WINDS Steve h.

[@MickLay]

Great video / info! Well done. Thanks!

[@martinrieger5822]

If you get one of the valves to install consdier installing a water injection system. For diesel engines you can improve fuel economy and reduce NOx. You can get up to 20% fuel saving for the same output. Since it looks like you have no intercooler it will help with hot days. Water with ethanol or methanol is also another consideration. This will improve torque at the same rpm by being more efficient. The water turns into steam incresaing the pressure on the piston rather than going out the exhaust as heat. You might have to consider the propeller pitch. Why is it not on cars? because manufacturers think we have a hard time putting fuel in and water is too much for our brains to handle. Aquamist are recongised as one of the best in the UK.

[@sailinglatis]

Would it be too slow to shut off the fuel if the tank was accessible? I’m thinking that based on the video there is too much fuel in the engine for a fuel shutoff to work.

[@thomassenator8170]

Wow. That was great info. Thanks.

[@G11713]

Looks similar to the NMC Lithium battery chemistry spontaneous combustion issue.

[@nicksavage4763]

Older Detroit Diesel on Tour Bus Ticking Time Bomb. Time for Rebuild, Replace, all Seals and Refit with Valves to remove potential for Disaster as Master Bedroom Sits right above That Engine. Thanks Rick

[@nicksavage4763]

L👁👁K HERE FOLKS! JOINED ONLY WEEKS AGO AND POSING AS RICK FISHING FOR VICTIMS TO SCAM. SCAMMER👺ALERT!

[@sjo800]

Hi Rick Is the runaway only on turbo motors ?

[@donhowell3372]

" Manual Pull / Cable operated shut off." from the Helm ... Turbos are great but they do cause problems

[@joecat101]

Capt Rick, are you sure there's no hole in the flywheel housing for a mag pickup. A lot of them still have it even when it's not used.

[@edshelden7590]

Back in the day I worked for a large transit company in the San Francisco Bay area. We had a fleet of buses powered bu GMC 671V engines (No electronics). These buses had emergency damper valves. The driver pushes a button on the dash and the valve closed. I have also seen a simple manual cable type system. A cable, which is attached to a pin is holding a spring loaded damper valve snaps shut. Pull the cable, air is cut off and the engine stops. This could be a DYI project. No Electric / electronics. I will bet there is some sort of after market equipment like this. Did he show the manual pull cutoff???

[@bravescatz]

Will installing the product void your engine warranty?

[@Jammer.1]

The best place to mount the censor is the bellhousing across from the starter !

[@imuayachtcharter7940]

interesting device with a crank sensor, box and valve

[@captainrehab2047]

Great video to share! Thanks

[@jascan1489]

Just add a manual toggle switch, maybe even 2 separate switches. One down below, one back in the cockpit.

[@lanieyu3647]

Getting R.P.M. signal from Alt. sounds O.K. as R.P.M increases Shut Off would be activated long before belt failure do to R.P.M.

[@juliabarnley7614]

Why don't the company make the shut off valve controllable via mobile or remote switch ?

[@Jammer.1]

Remember when you had splice the exhaust pipe installing his device is just like that the hardest part is deciding where to mount the pickup for censor !

[@bradpritchett3161]

Stupid question is it only turbo engine Naturally aspirated Not affected ?

[@johnw3638]

There's one scenario I witnessed where the shut off valve would do no good at the air intake, and that's where the intake bolts vibrated loose, allowing the intake manifold to separate from the block, allowing all the air the engine needed to run away. Injectors would still be operating until fuel shut off, but as he said, vapor in the air would be free to enter the cylinders and still cause a runaway. We've all forgotten to tighten nuts and bolts at one time or another, and since Fred's engine was newly overhauled with new (presumably) seals and parts, this mistake could have caused the problem.

[@davidyendoll5903]

If there is an air leak at the inlet the engine will not run too well and would be an indication of maintenance being necessary . A run away situation would need more air than would normally be supplied because of the higher revs , so a small inlet leak probably would not allow enough air for a run away on its own . If an inlet leak is suspected a small amount of fuel sprayed near the inlet with the engine running will increase the engine revs momentarily . How you test for leaking seals , like turbo seals , which may have age hardened is beyond my knowledge .... maybe someone can help . Having had , and survived , a run away situation ( i have not personally ) I would imagine the engine owner would never trust that whole unit again , because the mechanicals , pistons , conrods , bearings , etc , might have been run beyond their designed purpose limits .

[@oldenfarten5350]

Maybe a master fuel shut off valve and this air intake vale to double your safety factors...The fuel shut off valve would also help in case of fire if caught early enough. Place valve in easily accessible location.. I'm not a mechanic but I Stayed in a holiday in last night.

[@webheadusa9377]

When the engine runaway, you don't want to be anywhere near it to shut-off the fuel supply. And remember, if there are fumes in the engine compartment, the air intake will inhale the fumes. Just my comment based upon what was said during this episode. It is reasonable to me to quickly shutting the flow of oxygen to the engine. Fire needs heat, oxygen, and a combustible source - so shut off the supply of oxygen in the air. An alternative could be a Halon system, Halon being a safe gas to people as opposed to a CO2 system. Rick, very informative discussion! :¬) Webhead USA

[@gfimadcat]

Fuel shutoff doesn't do anything when the engine's busy consuming it's own oil. Only foolproof way is to shut off the air intake.

[@gregreppas1952]

Oldenfarten 53 Evidently you didn’t watch the video it’s not the fuel it’s the oil

[@donnakawana]

When you turn it off the guy said the flow of gas stops an it's the Oil not the gas... Because of the oil the turbo uses to cool the bearings... An the seals could leak . So the fuel isn't diesel it's Oil.... So shut off isn't viable.... Good try.. watch again...

[@SVPearler]

Diesel engine need two things to run, if you do t worry about compression. Fuel and air, knock one of them out, the engine stops. Do this just after its starts to run away you will not get the fire.

[@mobyhunr]

All turbos oil seal eventually wears and adds engine oil to the intake air stream needing turbo rebuild. Yes it can start slow and get worse or suddenly. While age is one factor, oil starvation to the turbo can and does wear seals early and suddenly. Sludge in the small oil lines to the turbo from, bad maintance, incorrect oil, undersized oil feed lines, improper cooling of the turbo, or main oil pump low preasure. Any one of these can cause oil blowby in the turbo creating an overspending. So, Cpt Moore and everyone engine age is only one factor to catastrophic yacht failure by way of Runaway grenading and burning a ship down. An intelligent knowledgeable person would require an emergency air automatic shut off on all diesels turbo or not that includes gen sets and other ancillary diesels. A additional manual electric switch is also cheap insurance. Use an automatic since this happens very fast. Test it as part of oil change ritual. A failing turbo from oil starvation can be recognized early by increase of normal operating temperature, (laser temp gun), oil seepage on the hoses post turbo sometimes before it. Visual glowing hotter then usual and or smelling something hot, maybe burt oil smell. Once it glows the turbine fins distempers grenade and go through the engine eventually. Lube and cooling for turbo must work at near 100% aalways. Sometimes manufacturers install undersized turbo oil lines causing line heating therefore sludging, low flow and or sludging in general with age. I can tell you how to stay out of trouble, but I can't make you. A second way diesels Runaway is over reving from an outside source. Downshifting at a toll booth too early sending the engine into high RPMs on older trucks. Engine pulls oil from the crankcase to fuel Runaway. Air shutoff is the only way to save it. In a boat you probably won't run into this unless you're surfing down a Tidal Wave in gear. The last way is rarer than surfing a tidal wave that's an injector or two dumping fuel. Then a fuel shutoff is the solution. Mechanical pop injectors could have this problem with age or fuel contamination. BTW warranties don't work too well when your ship is at the bottom of the sea. Knowledge can be learned be your own ships engineer or learn how to paddle real well.