First of all, let me say that I am asking this question in this fourm because I know that you guys are better then the "general diesel fourm" (or so I think.)

I am so tired of getting b@*%^!d at because I leave my rig running when I fuel her. Gassers think that because they do it, everybody needs to do it. I tell people that I don't need to because she burns diesel fuel. When they ask why that matters, I can't really answer that question.

I'm asking ya'll, why does it really matter? I know that dieselers can and gassers can't run while being refueled. But why?

Thanks in advance!

Douglas DC-9-81

 

'' I tell people that I don't need to because she burns diesel fuel''


try telling that to a cop, most states have laws regarding this. sure diesel is a little harder to ignite but when it does ignite it makes a fierce inferno. you want to minimize the chance of a static shock so just turn it off when fueling. what is so hard about turning it off?

 

i don't see the point in turning it off. someone please explain. i vaguely remember hearing one time that a woman was refueling her car in the winter and it was cold, so instead of keeping contact with the handle for the entire time of fueling, she went back in the car and sat in the seat. when she went back to finish, the static electricity she picked up off of the seat jumped the gap between her hand and the nozzle as she went to pick it up, and created a spark, and then a larger, much larger, BOOM. is the reason?

 

ford360gashog- I know every cop (in my town) and every state trooper (in my district) most have diesel trucks as personal vehicles. They don't shut them off either.

DC-9

 

i did a quick search, it is up to the fire marshall to determine this. it involves more than just your engine. your truck while running has spark sources just like every other vehicle , so to minimixe igniting gas fumes from someone near by filling with gas it is advised you shut it off.

 

Why can jets on an aircraft carrier refuel while running ? I always leave my truck running

 

the stacic will ignite gas but not diesel.
there really is no reason to shut off a diesel for refueling.
trains have huge diesel motors and they hardly ever shut off.
the only real reason to shut down you diesel, is if local laws
requires so. and only cuz it is the law.

 

Why would you not want to shut it off when you're filling it?

 

I left mine running while fueling and the overhead console would not reset untill I shut it off.

 

my truck runs 10 or 12 hours straight most days if im going to be at a job site for less than 1 hr i leave her idling most jobs only take 15 to 45 min including fueling just seems to be easier on the truckto me thats my only reason. just my .02 jefro

 

Gasoline has a flash point of -140 degrees and diesel is around 120 degrees. Also a gassers' ignition can create sparks and ingnite the vapors. A diesel doesn't create the same kind of hazzard so not really an issue. Not really any need to shut it off while fueling, but idling more than 2 minutes burns the same fuel as shutting off and restarting. I guess whatever local laws dictate is what is more of an issue.

 

im talking about the sterter glow plugs oil pressure . the semis let there truck run all day im just following there example after all they have spent more for there motor than i spent for my whole truck. besides afterpicking up trash and cutting weeds in 110F and 60% humidity me and my guys like to get into a A/C truck.

 

Jets can refuel on the carrier while running because it is a closed system with a double barrier. This means that there is no vapor, because the fuel hose locks liquid tight with the receptacle. The receptacle and hose have two spring loaded barriers. Should the fuel hose become uncoupled the flow out the hose as well as the manifold on the aircraft shut off immediately. Should the fuel hose or aircraft manifold spring a leak, the differential causes the servo valves to shut off. We don't have that kind of system. There are also excessive flow regulation, as well as volumetric shut offs.

That does not mean hot refueling is without risk however. For instance there is a prohibition against starting the APU on the 737 classic while fueling. You can have the APU running, or off but not starting because the ignitors are lit up and the fire auto shutdown circuit is not up until the APU is up to speed.

Hot refueling of diesel is not as dangerous as gassers, but it is not without risk. I've had a 5 gallon of gas blow up in my face due to static electricity from a bad ground once. Fortunately, RayBan Wayfareres and a baseball cap saved me from serious injury. Call me stuipid, call me overcautious, but I shut down. If a gas hose, since most stations sell gas near the diesel pump, sprays out, particularly in the area of your air intake by the grill, I don't want to be around you. And since I've tempted the petroleum gods once, I don't think they will give me a second chance.

 

IMO...it dosnt really matter whether you leave it running or turn it off. Because you still have to get out of the vehicle...when you move across your seat it will create static even if the truck is off.

Personally i turn my truck off becuase leaving it running then going into pay for the fuel might give a person the time to think "Hey...a free ride!!!". If that ever happend and i found the person...ide bury them alive in my back yard!

 

As long as you stay with the truck..Let it run...I always do