Run-away Diesel - Page 2

Dragrad · 3rd March 2018, 18:22

Quote:

Originally Posted by trikey

Hope you are going to give yourself an infraction for that.

No can do OB

spyder · 3rd March 2018, 18:33

Foot over the exhaust and hold it there very securely. Happen to me twice and makes for an interesting spectacle 😳

Mickyboy · 3rd March 2018, 18:34

Another way to cut the engine’s air supply is by manually blocking the intake with something - a rag, If you covered the intake snuggly but the engine still runs, it means there are leaks along the rest of the intake piping and the engine is able to suck from there.
Mick

tantallon · 3rd March 2018, 19:46

Quote:

Originally Posted by Mickyboy

Another way to cut the engine’s air supply is by manually blocking the intake with something - a rag, If you covered the intake snuggly but the engine still runs, it means there are leaks along the rest of the intake piping and the engine is able to suck from there.
Mick

Many years ago I had a V8 Paxman run away in a diesel hydraulic locomotive .I proceeded to stuff a donkey jacket up the intake .It came out of the exhaust stack as fluffy particles .The engine which normally ran at 900rpm at a max of 1200rpm reached a speed of 5000rpm .At this point two conrods came through the side of the block and yes it then stopped .The reason for this was that an apprentice was asked to check and top up the oil prior to start up .After further enquiries it was found that he had added approx 30 gallons of oil .

Phil-Hex · 3rd March 2018, 19:49

Quote:

Originally Posted by spyder

Foot over the exhaust and hold it there very securely. Happen to me twice and makes for an interesting spectacle 😳

A very good reason never to fit quad pipes to a diesel

kelvo · 3rd March 2018, 19:50

Quote:

Originally Posted by tantallon

Many years ago I had a V8 Paxman run away in a diesel hydraulic locomotive .I proceeded to stuff a donkey jacket up the intake .It came out of the exhaust stack as fluffy particles .The engine which normally ran at 900rpm at a max of 1200rpm reached a speed of 5000rpm .At this point two conrods came through the side of the block and yes it then stopped .The reason for this was that an apprentice was asked to check and top up the oil prior to start up .After further enquiries it was found that he had added approx 30 gallons of oil .

I have been trying to find details of a class 47 which I think blew the engine up when it runaway, seem to remember it being related to a turbo charger failing and it running on lube oil.

I had a diesel generator runaway before, think it was a bit worn and started picking up sump oil - had to block the air intake to stop it in the end.

Comfortably Numb · 3rd March 2018, 20:37

Having had this happen to me in a hired Citroen Relay, I can say it is very scary, doing 90 down Shap on the M6 with the engine switched off, and pressing hard on the brake pedal. Fortunately, for me, it lasted less than 2 minutes before it calmed down, and normal service was resumed. Last time I top up the oil on a hire van which is overheating, and has apparently less than minimum oil in it! Timing chain engines are more susceptible to this than those fitted with a belt, as diesel can leak through a worn front ip seal, down the chaincase and into the sump. Mitsubishi 4M40 engines were prone to this. Engine stalling shortly after starting, and a strong smell of diesel when you take off the oil cap are indications not to be ignored. Letting out the clutch in 5th at 4,500rpm+ sounds like a recipe for a destroyed gearbox or clutch, or, as in my case, taking off like a dragster, - ok on the M6, but not a good idea in a town centre. Says something for the BMW engine in that Freelander that it didn't just explode, running flat out for that length of time!

3rd March 2018, 18:33	#12
spyder This is my second home 75 CDT Auto Tourer , Rover 45 , Astra, Zaffira, Chev Captiva Join Date: Mar 2011 Location: Wilts Posts: 3,342 Thanks: 203 Thanked 436 Times in 360 Posts	Foot over the exhaust and hold it there very securely. Happen to me twice and makes for an interesting spectacle 😳 __________________ Chrome skull caps, EGR cleaned (original housing), Mondeo lower mounting, 12V outlets in the armrest and tourer boot, cat fixed, working FBH, Lidl plenum covers, DD with reverse camera.New speakesr/Tweeters with MDF rings. wood dash, Memory leather seats, wooden finished steering and handbrake, Xenon headlights.

3rd March 2018, 18:34	#13
Mickyboy SERVICING AND DEALER DIAGNOSTICS MG ZT CDTI 135 + & MGZT CDTI AUTO 160 & ROVER 75 TOURER CDTI 160 TROPHY YELLOW Join Date: Aug 2013 Location: Hernebay Posts: 4,331 Thanks: 818 Thanked 2,414 Times in 1,141 Posts	Another way to cut the engine’s air supply is by manually blocking the intake with something - a rag, If you covered the intake snuggly but the engine still runs, it means there are leaks along the rest of the intake piping and the engine is able to suck from there. Mick __________________ [SIGPIC][/SIGPIC] T4 Owner Jobs done : new UBP, Spy hole mod, Rear hub(wheel bearing),plenum cleaned and emptied, Inline thermostat fitted,Full service, In car Digital tv/DVD Bluetooth Satnav etc, Replaced UBP, Restored headlights,Fixed airbag connection.replaced HP pump,replaced rear light seals,changed intercooler O rings. Jobs to do: ,replace drivers lock,.[/SIZE]

3rd March 2018, 20:37	#17
Comfortably Numb Posted a thing or two Rover 75 Saloon Join Date: Dec 2017 Location: Penrith Posts: 1,336 Thanks: 165 Thanked 303 Times in 241 Posts	Having had this happen to me in a hired Citroen Relay, I can say it is very scary, doing 90 down Shap on the M6 with the engine switched off, and pressing hard on the brake pedal. Fortunately, for me, it lasted less than 2 minutes before it calmed down, and normal service was resumed. Last time I top up the oil on a hire van which is overheating, and has apparently less than minimum oil in it! Timing chain engines are more susceptible to this than those fitted with a belt, as diesel can leak through a worn front ip seal, down the chaincase and into the sump. Mitsubishi 4M40 engines were prone to this. Engine stalling shortly after starting, and a strong smell of diesel when you take off the oil cap are indications not to be ignored. Letting out the clutch in 5th at 4,500rpm+ sounds like a recipe for a destroyed gearbox or clutch, or, as in my case, taking off like a dragster, - ok on the M6, but not a good idea in a town centre. Says something for the BMW engine in that Freelander that it didn't just explode, running flat out for that length of time!