How come you cant shut run away off with a pull cable?

Or can you? Just something ive been wondering and i just remembered so i figured id ask

 

Usually it is because there is another source of fuel coming in the intake. So even if you shut off the fuel to the pump it is still getting fuel and will usually blow.

 

Dean, I have no first hand experience with a runaway( thankfuly), but from what I have read here and other sites, often a runaway will start burning oil, or vapors in the air, so shuting the fuel off wont stop them.
The only "proven" way is to smother the engine.....

 

Thought of something cool along those lines, Have an all Co2 cable pull extinguisher mounted to the intake somewhere, pull it like a race car fire suppression rig, all that co2 will smother the engine in a hurry! I guess they use halon in race cars wonder if it would hurt the motor. maybe even argon?

Any way thought it was cool idea.

 

All the pull cable does is move the fuel collar toward the no-fuel position. As has been said, if there's an alternate source of fuel, the manual shutdown lever will have no effect on a runaway. In the instance of a full fuel screw that has been turned up too far, the story is the same. The reason being is that the FF screw actually changes the geometry of the governer lever assembly--run the screw in and the control collar is biased away from the no-fuel position--run the screw in too far and the collar is so far from the no-fuel position, even at idle, that the engine just keeps building rpm. The shutdown lever physically pushes the governer lever back, but the FF screw limits that movement. HTH.

 

for the turn the screw to far runaway if you shut off the fuel you stopped the lubrication and the engine is on its way into orbit. Its going to take some time to wind down and the pump will have less lubrication. Or thats what I read here once, and thats why shutting off the air is best.

 

You need a air intake blocker to stop a runaway. Like what they use in oil field trucks. A C02 extinguisher would probably just make a huge mess.

 

halon should work! like after the turbo on the charged pipe almost like nitrous injection! halln makes no mess and removes the oxygen.

 

kinda off topic but my buddy had his truck run away 1 time had million + miles, an old 6.2 diesel, he didnt know what to do so he just shot the motor with a 12 guage about 2 rounds, and it quit running, funny enough it saved him a ton of money and the inside of his motor was fine! HAHA

 

^^ priceless

 

ya thats a chevy for ya haha but I DO NOT suggest trying this with a dodge!! funnyest thing i'd ever seen should snapd a vid and put it on youtube haha

 

Now a true pure co2 extinguisher is just co2 gas, I think you are thinking of Dry chem co2 units. wich would make a huge mess!

A damper or flapper valve of some sort would work too! like an exhaust brake style mounted post intkake?

 

when i was in school i had a 6.8l deere engine in a stand take off on me i had to throw my carhart coat into the intake. it din't have an air filter on it just a peice of pvc pipe coming off the turbo it sucked the coat right in but it stoped the engine and the only thing damaged was the turbo (i think the zipper was a little hard on the compresser)

 

did yall see the pulling engine in Diesel Power a month or two ago? It had no air filter and a rain flapper on a pull cable at the end of the intake.