Thread: Runaway Diesel engines

If its a manual don't dip the clutch and steak it on the brakes.

If it's an automatic, try and choke it somehow. .... squeeze the intake tube?

I know a bloke who had a 300tdi runaway up a sandune, luckily he knew exactly what it was and stalled it.

I've heard of a CO2 fire extinguisher discharged into the intake.
Also mechanically blocking the intake (ie a flap of rubber etc that ideally wont get sucked into the engine).

On the modern engines at least, I believe there is a number of safety features to prevent this. The TDCi electronic throttle is one such means.

I had it happen to me with a Fordson tractor motor in my cabin cruiser on the Murray River decades ago. I had tooted my horn, waiting for a lock to open and couldn't shut the motor down. Wouldn't respond to kill switch

Ended up running it into the bank and thankfully motor stalled. When lock opened the Lock Master commented on the boom I made when I hit the bank, it was steel hull. Problem only happened once in my ownership.

Sorry not LR but brought back memories

Cheers Paul

Originally Posted by poundsterling

Good evening,

I have just been watching some streaming on U-Tube re Runaway Diesel engines, looks like a terrifying experience to me.

My question to the forum, (1) has anyone experienced it with a Landrover, no matter what model
(2) with a Perentie Isuzu Diesel in mind, I would like to know what to do if it ever happened, how would you stop the engine.?

Sensible suggestions appreciated.

Cheers

I can't answer within your parameters, but I will tell you of the Tune Up specs of the GM diesel in the M113A1 APC the army had. It had a GM TurboDiesel V6, and a nice little jigger it was too. When You did the tune up sequence, you did it to a predetermined sequence. This sequence was listed on a series of lists, on a clipboard. So what, I hear you ask. Well, the clipboard was made from 10mm aluminium. The idea was, if the GM ran away, you stuck the clipboard over the exposed ( you were tuning it up, remember? ) air intake. Fingers were optional. Those GMs would run on their own oil if they got away. Scary stuff.

The vertical solenoid near the dipstick does the same job as that stupid EDIC .The solenoid on the fuel filter works a butterfly valve in the entrance to the manifold.Mine works with a push button switch but could be opperated by over revs or in conjunction with the fuel shutoff .The butterfly valve in my case is Isuzu but they can be bought after market


AM


Air Intake Shutoff Valves

Air intake shutoff valves (often referred to as AISV or ASOV) and systems provide emergency overspeed shutdown protection for diesel engines and are the most effective way of preventing a runaway situation. The valves completely block the engine air intake system, cutting off an uncontrolled external fuel source and the air required to keep the engine running.

All quite useful erudite responses here to be sure....
Most runaways nowadays are blown compressor (turbo) seals though-- letting oil into the charge tube and the engine goes off on a tangent as it were.
Block the intake is the only sure fire way of killing a runaway.
Sometimes this is hard... if the vehicle is a manual trans, options are clear. If auto, options are restricted...
Biblical advice is: Block the intake. Quick.

Ok,, I can see the turbo oil seals pumping oil in,,

but on a NA engine?

Injector failure perhaps.
Or blow-by. It will positively reinforce itself.