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  #37  
Old 03-17-2014, 10:36 PM
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Re: Fueling the CRD

The diesel supplement says to not open the fuel door with the engine running because the fuel system is pressurized. It has this warning:

Do not open the high pressure fuel system with the
engine running. Engine operation causes high fuel
pressure. High pressure fuel spray can cause serious
injury or death.
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  #38  
Old 03-18-2014, 12:03 AM
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Quote:
Originally Posted by mtnmerlin View Post
The diesel supplement says to not open the fuel door with the engine running because the fuel system is pressurized. It has this warning:

Do not open the high pressure fuel system with the
engine running. Engine operation causes high fuel
pressure. High pressure fuel spray can cause serious
injury or death.
LOL...ok, I'm not buying that. Simple physics. If the nearly empty tank was pressurized, there would be a huge amount of escaping gas (ok, air is a gas) as soon as the nozzle pushed the trap door open. The fuel is in the bottom of the tank. If anything could spray out, we'd all know it by now. Mine has never even made a hiss or showed signs of any pressure. If the tank was full, it might belch out a small amount...but liquid is less compressible and would equalize quickly. I don't see a way for a "high pressure spray" to come shooting out. I think the lawyers had them add that as a CYA clause.
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  #39  
Old 03-18-2014, 06:46 AM
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Re: Fueling the CRD

Quote:
Originally Posted by ExcursionDiesel View Post
LOL...ok, I'm not buying that. Simple physics. If the nearly empty tank was pressurized, there would be a huge amount of escaping gas (ok, air is a gas) as soon as the nozzle pushed the trap door open. The fuel is in the bottom of the tank. If anything could spray out, we'd all know it by now. Mine has never even made a hiss or showed signs of any pressure. If the tank was full, it might belch out a small amount...but liquid is less compressible and would equalize quickly. I don't see a way for a "high pressure spray" to come shooting out. I think the lawyers had them add that as a CYA clause.
The manual is talking about "system", not door. I believe its related to the underbody fuel filter. Why would one open those with the engine running is beyond me.
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  #40  
Old 03-18-2014, 03:00 PM
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Re: Fueling the CRD

Quote:
Originally Posted by ExcursionDiesel View Post
The Diesel uses 0.3 gallons per hour at idle when at operating temperature. You would need to idle 7+ hours to lose 100 miles from your range!
I know I was not clear in what I wrote. I drive a hundred miles every work day. Fuel prices in NY are crazy so I always fill up at a station that is near to where I live who has the best prices anyway. So when my range shows that I have around 100 miles when I am home I have to fill up. It just happens that if I just drive to work and back I will have 150 or so miles left in the tank after 5 days. Of course it is impossible to only drive to work and back so I end up burning up that 50 mile cushion. If I start idling to warm it up at home and at work well I fuel up on the 5 day and not the 6th.

Not a big deal but when you go through as much fuel as I do, well you try to get the best MPG you can and the beauty of diesel is how long you can go between fill ups. Everyone can do what ever they want in terms of idling but for me it feels wasteful and probably a carry over from those days in the 60's and 70's where we were going to save the planet. It is still here by the way and doing much better that it was then.

When you consider the recycling of those garbage bags it probably is very similar. People do it because they feel they are saving the planet and not filling up landfills and some other such nonsense. We actually use more energy to recycle them than is used to just toss them out. And modern landfills are so secure anymore what goes in there stays there and I am sure at some point is going to one other source for energy and reuse of waste material for a new use.

Thanks for the data on idling because now when I am forced to idle I know that I am not burning all that much fuel and I think your math was a bit off because even at a high MPG I would have to idle closer to 12 hours to lose 100 miles off my range.
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  #41  
Old 03-18-2014, 04:10 PM
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Quote:
Originally Posted by raptor5618 View Post
I know I was not clear in what I wrote. I drive a hundred miles every work day. Fuel prices in NY are crazy so I always fill up at a station that is near to where I live who has the best prices anyway. So when my range shows that I have around 100 miles when I am home I have to fill up. It just happens that if I just drive to work and back I will have 150 or so miles left in the tank after 5 days. Of course it is impossible to only drive to work and back so I end up burning up that 50 mile cushion. If I start idling to warm it up at home and at work well I fuel up on the 5 day and not the 6th. Not a big deal but when you go through as much fuel as I do, well you try to get the best MPG you can and the beauty of diesel is how long you can go between fill ups. Everyone can do what ever they want in terms of idling but for me it feels wasteful and probably a carry over from those days in the 60's and 70's where we were going to save the planet. It is still here by the way and doing much better that it was then. When you consider the recycling of those garbage bags it probably is very similar. People do it because they feel they are saving the planet and not filling up landfills and some other such nonsense. We actually use more energy to recycle them than is used to just toss them out. And modern landfills are so secure anymore what goes in there stays there and I am sure at some point is going to one other source for energy and reuse of waste material for a new use. Thanks for the data on idling because now when I am forced to idle I know that I am not burning all that much fuel and I think your math was a bit off because even at a high MPG I would have to idle closer to 12 hours to lose 100 miles off my range.
I don't want to derail this thread, but I find your statement about recycling very misleading. You're not taking into account the energy to make virgin material to replace what got tossed in the landfill. Do you know how much energy it takes to make new aluminum over recycling old aluminum? Recycled aluminum uses just 5% of the energy required to make aluminum from bauxite. And plastic? You're using lots more oil to make more.
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  #42  
Old 03-19-2014, 10:33 PM
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Re: Fueling the CRD

Diesels have incredibly high pressure fuel injection systems. The warning is for the rail at the engine or perhaps maybe the fuel filtering system as mentioned but more likely the very high pressure at the engine.

No one needs to worry about opening the fuel filler door while the engine is running and a lethal stream of diesel fuel shooting out But diesel pressure at the rail and injectors is no joke.
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