| Author |
Message |
DAVID HEAD (Chuck)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, May 13, 2005 - 8:34 am: | |
any body ever get water in a fuel system and if so will it come out with repeated refueling or does the system need to be drained.My diesel truck is telling me it has water in the fuel and I don't want to drain it unless I have no other choice |
DebDav (Debdav)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, May 13, 2005 - 8:58 am: | |
My Powerstroke has a 'water in fuel' light. I locate the yellow drain lever under the air filter and drain fuel/water out. It splashes down engine to ground. I place pan under to colect most splash. Close lever and immediately start engine - Run for a few minutes. Be careful not to lose prime (expensive if you cannot self fix). |
RJ Long (Rjlong)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, May 13, 2005 - 11:38 am: | |
Water's heavier than diesel, so you should be able to crack open the drain and let a little out at a time until it's just diesel that runs out. You should find a drain petcock either at the fuel filter or the main tank.
Be sure to collect & dispose of the drainage properly.
Might also suggest that you get some Bio-Bor or equivalent to handle any "bugs" that like to grow at the interface between the water and diesel. |
Jim Bob
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, May 13, 2005 - 3:42 pm: | |
The reason there are lights & bells to warn you of water in the fuel is that if the water reaches the high pressure pump &/or injectors on a diesel AND ESPECIALLY an electronic diesel it will DESTROY those components. Water provides absolutely no lubricity so the plungers, etc will gall & sieze. The pressures on electronic engines are about 5-10times as high as mechanical diesels so the problem is way more critical.
Last time I checked, injectors for Powerstroke engines were $400. EACH! (8 cylinders) You don't want to go there. |
John Jewett (Jayjay)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, May 14, 2005 - 12:36 am: | |
Jim Bob, surely you are mistaken? The pressure of my N-60 mechanical injectors on my DD8V71 is about 2200 psi. Can electronic injection be 8 to 10 times that? ...JJ |
niles steckbauer (Niles500)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, May 14, 2005 - 2:11 am: | |
Get a 'visible' fuel filter/seperator - then you can see if you have water in the system - Niles |
FAST FRED
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, May 14, 2005 - 5:38 am: | |
"Can electronic injection be 8 to 10 times that?" ...JJ
Yes the system is very diferent , the DD fuel suply manifold only has about 60 psi, to fill and cool the injector. When injecting the rocker arm turns the injector into a pump , and you get that 2200 PSI.
The Modern diesel with electric controlled injection will have the fuel rail presurized to close to 30,000psi.
The electric box will fire the injector 3 times on each power stroke , once to get the fire started , quietly, the next to produce the power , and the final squirt to help on the nox production .
These engines get a 15% reduction in fuel burn, and very little diesel noise (that first tiny squirt) and a very clear looking exhaust.
What happens after the battery cable gets loose , the alt reg goes crazy or a lightning strike?
Guess you walk home.
FAST FRED |
Jim Bob
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, May 14, 2005 - 8:29 am: | |
Fred's right about the pressures in the HPCR (High Pressure Common Rail) electronic engines. The computer can actually produce more than 3 squirts, actually 3 "events" comprised of many short bursts. I will get the specs to post 'cause it will boggle your mind. One of the 3 "events" is an after-injection that burns in the manifold to reduce pollution!
As to the DC power supply, the computer needs separate power input directly off the battery. While it will continue to run down to about 8 volts (way after every other device quits), we have learned that sometimes a separate battery is required because the momentary voltage drop when the engine is cranking can cause the computer to crash! It doesn't have to be reprogramed, but the engine won't start 'till it re initializes.
This stuff is a pain now, but before long it'll be common knowledge.
But for now, get rid of that water! |
pat young
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, August 07, 2005 - 1:32 pm: | |
RJ Long is right, you can get water out of your system by draining your fuel lines at the lowest point. I once inadvertently put a gallon of water in my fuel tank (next time don't store water and diesel in similar fuel cans!) and I was really bummed. Then I figured out that I could open the pipe plug at the bottom of muy fule tank SLIGHTLY, and the water would drip out until it was all gone and I got pure diesel. It took several hours, so I could be sure I didn't get a bunch of hard-to-dispose-of watery diesel.
Then I just tightened back up the plug.
I don't know if this will fix all the problems, but it sure got the water out of my tank
Patrick Young
Fresno, CA |