| Author |
Message |
bobm (68.35.160.48)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, March 20, 2004 - 7:42 pm: | |
My 4104 started and ran ok while pressure built up. I drove off 1/4 mile and then no power, would only idle. After a couple minutes idling it quit and would not start. I primed the system and it ran ok for another few minutes then same thing no power, idle only, then quit. Any suggestions. |
TWO DOGS (63.185.81.96)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, March 20, 2004 - 7:55 pm: | |
mouse trap ?????????????/
always remember this...if a diesel quits running...it's out of fuel.... so...fuel filters ??? |
TWO DOGS (63.185.81.96)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, March 20, 2004 - 8:06 pm: | |
if you've had kids in the bus...check the mousetrap....seems like little boys about 4 to 6 think they need to push evey button,,,also if you are getting lots of black smoke and NO power to speak of |
Nick Morris (Nick3751) (65.117.139.135)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, March 20, 2004 - 8:07 pm: | |
I had a tractor pull a similar trick on me once. The retarded owner had attempted to check the fuel level in the tank by putting a shoe string in it. Needless to say he droped it and failed to tell anyone. The string had been pulled into the fuel line and it wouldn't let enough fuel through to run for more than about 5 minutes or so. I about pulled my hair out. Till I noticed the fuel line flatening out just before the engine quit.
Moral of the story check you fuel lines and make sure they're clear. If you've had it in storage maybe someone has "helped" you with your problem. |
TWO DOGS (63.185.81.96)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, March 20, 2004 - 8:11 pm: | |
yeah I had a tractor that the guy checked the fuel with a stick...had all kinds of bark in the tank...but...no more than he told us..I'd say it was fuel filters |
bobm (68.35.160.48)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, March 20, 2004 - 9:18 pm: | |
Now I cannot get it to prime. must have a break in a fuel line. I used a vacuum pump and cant draw any fuel. Plenty of fuel in the tank and my problem must have been slowly developing because last month It quit and I thought I was low on fuel and transfered 20 gallons from my spare tank (old A/C tank) and changed the filters and it ran fine for about thirty miles |
Nick Morris (Nick3751) (65.117.139.135)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, March 20, 2004 - 9:36 pm: | |
I'd say take the fuel line lose at the tank and see what comes out, or doesn't, and work from there. Have you ever cleaned you tanks out? Maybe you've got some junk that has accumulated naturely and has now come to a head in the line. |
John Rigby (66.25.227.151)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, March 20, 2004 - 10:16 pm: | |
I,ll bet the fuel pick up line is broken off inside the tank and therfore, would pick up fuel. Now its completely broken it doesent reach fuel in the tank.
John |
FAST FRED (63.234.20.35)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 21, 2004 - 5:11 am: | |
"It quit and I thought I was low on fuel and transfered 20 gallons from my spare tank (old A/C tank) and changed the filters and it ran fine for about thirty miles",
Just what was the fuel in the old tank , and how OLD was it?
How does the primary filter look?
Sounds like your plugged between the tank and the check valve, Open the system and see if you can pull fuel from the tank to the check valve , then see if you can pull thru the check valve.
When you can try pulling/filling the primary filter.
IF it wont pull fuel , you might try blowing thru the line to TEMP clear it , (the traveling plug will STILL be back in your fuel tank).
A good troubble shoot will find the plugged or crushed or rusted section.
Enjoy, it will feel SO!!! good when you find it.
Good Hunting.
FAST FRED |
john w. roan (Chessie4905) (69.162.21.219)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 21, 2004 - 7:50 am: | |
If you plan on using this coach reliably for some years and you are mechanically inclined, drain the tank into whatever will hold the fuel, pull the tank, and inspect, repair and clean as necessary, You will see how everything is laid out and then have the peace of mind that you aren,t going to have this happen again where it is going to be extremely inconvient or costly. Found a large piece of solder sucked into my pickup tube. Strain all fuel as you put it back into tank. Check gage every so often as you refill so you will know how many gallons are in tank when it reads empty, 1/4, etc. WRITE IT DOWN. Memories fade. Good luck |
bobm (68.35.160.48)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 21, 2004 - 10:18 am: | |
Thanks for the help. When I apply suction at the check valve I get fuel and air. Must be a hole in the fuel line allowing air to enter the system in between the tank and the check valve. Probably above the rear end where the lines are exposed to the elements and road debris. |
bobm (68.35.160.48)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 21, 2004 - 2:46 pm: | |
Plugged priming pump. Maybe I have solved the problem. Between the check valve and the filter is a small plunger pump for filling the filter. I have not used it as it did not seem to work. I took it apart and it is clogged. |
Nick Morris (Nick3751) (65.117.139.135)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 21, 2004 - 3:07 pm: | |
Sounds suspect to me. That tractor I talked about before would produce bubbles in the fuel filter(glass type). It was sucking air in around the connections between rubber and steel line. No leaks just suction. |
J.L.Vickers (209.34.16.246)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, March 22, 2004 - 8:36 am: | |
The PD-4104's are getting on in age and the first place to look for the fuel lines to leak is over the rear end.
Aft of the rear baggage bin bulkhead to the engine compartment front bulkhead.
The fuel lines are made of steel and the rust will cause a pin hole leak and if it's in the supply line to the pump the fuel pump will not pump fuel with a air leak in the line.
I know been there and done that with my 1st 4104. |
Henry R. Bergman, Jr. (63.224.197.10)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, March 22, 2004 - 5:08 pm: | |
Well, well, well, FINALLY something I have first hand experiece with. He he he.
Everyone above is nearly correct. I bet it is your old rotten rubber fuel lines (do you have rubber lines?)...
...that are swelled up on the insides like blocked heart arteries and are NOT allowing enough fuel...
...to be passed thru from the gas tank to the engine. They may even look practically brand new to the eye...
...but the problem is inside the hoses, not on the outsides. Priming/pressuring/purging the hoses will NOT...
...HELP because the rubber lines just expand under pressure, then recollapse under the reduced pressure/suction of normal operation.
Replace all the rubber fuel lines. If you can, even go to the next larger size than what you have now and...
...your problem may go away. The bus starts and runs because it is getting enough fuel. But once you try to go down the road...
...the hoses collapase and the engine goes starved for fuel. Now...if your Coach has all steel lines, then my face is red.
However...if your coach has old rubber fuel lines, try replacing all of them and see what happens. Also check/replace your filtures also. Good luck. |