FLU419 Diesel engine does not shut off

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ede356

New member
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Suwanee/Ga
Hello all,
I run in a weird situation a few days ago: one of my FLU419's did not shut off even after I put the hand throttle in off position.
I heard of situations like this on Mercedes diesel cars when they have an issue with the vacuum shut-off valve. But the Flu419 does not have a vacuum line to shut off.
Not only that the engine didn't shut off it also rev'ed up. The only way to stop it was cutting off the fuel.

Has anybody had a situation like this before? Any hint, what causes that issue and how to fix it?

Thanks

Ede356
 

Speedwoble

Member
416
5
18
Location
New Holland, PA
Your throttle linkage was likely bent, which will cause it to go overcenter and increase the throttle. I believe this happened on a prior FLU I had and I was able to pull up the foot throttle to shut it off. Check the linkage on the engine side of the firewall by the foot and hand throttle. This is covered somewhere in the main owner thread.

For future reference, you can shut the engine off by putting it in high gear and stalling it or by reaching above the Passenger side tire and directly actuating the shut-off on the IP. Both are easier on the IP than starving it of fuel.

One last option is if you tried to pull something solid and pushed the clutch in right before stall. The engine can actually run in reverse. But it will sound different as it is sucking air in the exhaust and out the intake. In this case, you must stall it to kill it quickly as it is running without oil pressure.
 

ede356

New member
5
0
1
Location
Suwanee/Ga
Speedwoble,
thank you for your advise.
The linkage is not bent.
I even took the engine cover inside of the cabin off and actuated the lever so that it went in its "Off" position...

Where do I find the shut off on the IP?
 

SeeNebraska

New member
71
0
0
Location
Nebraska
this just happened to me tonight. only thing i could think to do was close off the fuel line with the valve by the tank. also tried to cover the intake air at the same time. Eventually it died but it took a while and was running very high RPM's. since i dont know what caused this, i'm nervous to go start it back up again...
 

monstermog

Member
Steel Soldiers Supporter
94
1
8
Location
Billings, MT
So the linkage wasnt over center. When the engine cover is off...look at the left hand side of the engine by the throttle. Is the plastic roller stuck in the wrong position?

In actuality the engine and cab are seperate from eachother thats why there is a ramp up on oneside.

Also in this is the high idle pnematic ram for the rear. If the switch is on in the rear it will activate this ram too idle high. Hit the switch on your controls in the backhoe and you should have independent control again.
 

911joeblow

Member
461
0
16
Location
Utah
Make sure you dont have low engine oil! You might be sucking pan oil into the combustion chambers or pressurized oil past a head gasket. This is a REALLY bad condition that have caused some VERY serious destruction. This is the first thing I check if I cant shut off a diesel.
 
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