3406 B failed emissions in NY

I will also add that I have replaced an inline 6 cylinder Perkins engine that had ran away to self destruction due to a leaking turbocharger. A fellow field technician had gone out to a machine to look at something unrelated. When he started the machine, it ran ok until it warmed up some and the oil thinned out enough to get pushed down the intake. At that point the engine did take off and it ran until it seized. Yes the other tech did shut the key and the battery disconnects off. He attempted to plug the intake with a winter jacket but was too late by the time he got it off and wrapped around the air cleaner. Myself and everyone else at that shop have no doubts that it ran away on engine oil and the 4 or 5 litres of oil I drained out of the air to air and intake manifold is my proof.

 

Yes,because it's injected and atomized.

 

And again it sounds like the engine possibly ran up against the governor till the oil was all injested,like that truck in the video.If it was constantly climbing rpms,the mechanic would be foolish to stand there trying to wrap his jacket around the intake.But running crazy rpm's and throwing rods,exploding out of these engines like people seem to think will happen with a runaway,just doesn't happen.Not trying to start a pissing battle either,but I've been building and operating these engines since the 60's and I'm still at it,I've never had anyone drag one in yet exploded from injesting oil through the intake.
When an engine goes to high idle and doesn't want to come back down,it can make the hair stand up on your neck,but if you use common sense,and figure out what's causing it it can be shut down usually with out catstrophic failure.Just have your snips ready.[/QUOTE]

 

[/QUOTE]

Yes I understand your point about the oil being atomized in your first post and I won't argue that.

The Perkins we had grenade was fully electronic and by cutting off keyed power, as well as battery power with the master disconnect switches, the engine should have shut right down as the injectors would have had no power to operate (common rail fuel system). The ECM and turbo were sent to the Perkins dealer to be used on the new engine they were building. The ECM had recorded engine overspeeds exceeding the governor settings. His method of stuffing his jacket around the air cleaner intake was an attempt to block the airflow into the engine to at least get it stopped before it seized up.

Now had the customer had a positive air shutoff installed as per the jobsite rules, this would not have happened as that engine would have died as soon as the intake was closed off.

 

Sorry douga
But your actually wrong on a few points.

The engine will not stop on a runaway if it has another fuel source. The only time the governor will take over is if it's diesel related and the fuel rack in the pump or like in a 2 stroke the rack itself is not stuck open.

The engine don't care what it burns and if there's lots of it it will runaway and do damage. Bent pushrods is very very common as is thrown rods .

If your turbo blows an oil seal and the engine sucks it in, the fuel governor in the pump is not going to stop at high idle . Just sayin.

 

I wonder how quick I could grab my knife next to my seat, jump out, pop hood latches, lift hood, cut convoluted silicone tube and slide my clipboard over the manifold elbow inlet of my 3406C. Maybe I should practice to keep my time low!

 

ow ow I know (waving my hand in the air) ZERO!!! what do I win?

 

My 2 cents worth. I am enjoying this thread and trying to use logic to determine what is correct and what is incorrect. DougA - oil doesn't have volatility? Tell that to a friend of mine who used an oil drip on a wood stove and as a consequence burned down his shop when he allowed too much oil to drip. Atomized oil will be burn very hot. Think fuel oil in an oil fired furnace or boiler. Fuel oil isn't motor oil but it is pretty darn close imo.

 

Old engines with leaky rings that consume oil run like crap because the leaky rings allow the air from the combustion chamber to enter into the crank case (blow-by). In other words, you're losing compression. Besides, even in the worst engine that burns a gallon or two of oil per day, when you figure you're ALSO burning 60-80 gallons of fuel per day, the amount of oil being leaked into the cylinder is inconsequential to the air/fuel mixture...far less of an issue than the loss of compression.

Compare that to an oil line feeding a turbo, which will push a significant and unregulated volume of oil into the intake, for the engine to suck into the combustion chamber and burn...and the engine runs away.

Proof? The videos are all over the internet.


Etc., etc., etc...

 

Motor oil won't burn???????
How come I burn 20 plus 55 gal. barrels of used motor oil in my waste oil burner to heat my shop every year?
Also witnessed a 3406 in a cat shop run away after a turbo replacement.
The previous turbo failed filling the air to air cooler full of oil.
Upon start up it idled about a minute or so then took off reving higher and higher till it thru a rod thru the side of the block covering the truck in the next bay with motor oil and damaging the hood where the broken rod hit it.