ok so as many of you know..... i have been having problems with it stalling like air in the line... anyways i let it sit over nice and guess what i found under the truck.... DIESEL. guess were its coming from... nope.. its coming from the tank... i pulled the sheild off the tank and i have a pinn hole in the bottom of the tank... kinda weird how it got there since i do not offroad and the sheild covers were the hole is.... anyways im thinkn that maybe this pinn hole is a place were im getting air in my tank... causing it to die.... its a pretty healthy drip i can wife it off and within less than a second later its already running down the tank and dripping.......................................... ...................

Of course the hole is a problem but I do not think it would cause air in the line. There is not enough draw on the pick up tube in the tank to suck air into the line as long as the fuel cap is funtioning properly. (my thoughts any how)

tanks are cheap,replace it and the pickup unit + the hoses it they are cracked,inspect the steel lines as well, if badly rusted you can run a fuel hose all the way to the LP.

yea.... im going to find a new tank and i was thinkn since its going to be on the ground check everything out make sure it alllll good..... i did notice that what i think.. if it gets to about 1/4tank thats when it starts to shut off.. i ran all week last week no problems at all. got dow to 1/4 tank monday and bam dies all the time...

so you guys dont think that this little hole in the tank would cause air in my lines....... just gotta double check... also stupid napa here cant even get me a new tank ...so i think im going to have to patch it................................................ ........

so you guys dont think that this little hole in the tank would cause air in my lines....... just gotta double check... also stupid napa here cant even get me a new tank ...so i think im going to have to patch it................................................ ........

No on the air. The tank epoxy patches work well but you could also get a new tank from Rock Auto. I just had one delivered for $180 and that's a 42 Sub tank. When you drop the tank, let us know what your tank sock looks like. I'll bet it will be ugly.

Hi All,

I'm thinking if the stalling is occurring somewhat consistently at around 1/4 tank, then it might be fuel cap vacuum related, right?

First I'd make sure that it's not a gas cap, but rather one made specifically for a diesel.

Then, when the truck stalls... I'd remove the fuel cap and check for the big whoosh sound. If there's a big whoosh, I'd consider replacing and/or gutting out the cap.

That might point you in the right direction.

Also... you might wanna drive without a fuel cap for a bit to see if you still stall or not.

I hope this helps.

Thanks and take care.

More later...

Z.

thanks guys...im not sure how to tell if i have a gas cap or a diesel cap..???? its black.. lol... ya no matter how full the tank is when i take the cap off i get a lot of air sound... like its almost out of fuel...... i bet the sock in the tank is badd... and when i gets down to a 1/4tank it cant pick up the fuel it needs.... thats what i think... how come the hole in the tank wouldnt cause air in the line.? to me if you have a place were air can get in than its going to come in.................anyways thanks for the help everybody and also ebay has a tank for 120 bucks to my door. but i have to wait like 2 weeks or more.. and i need it now... so that wont work.....

how come the hole in the tank wouldnt cause air in the line.?

How much air is in a half empty tank and it doesn't cause a problem, right?

I'm thinking... if the hole in your tank is at the bottom... then any air that is drawn in from there will just bubble up to the surface of the fuel left in your tank and it won't necessarily get sucked into the fuel lines by the lift pump.

Besides... there is always some air in the fuel tank... less with a full tank, a lot more with a near empty tank.

I think the only time that you would draw air in from the tank is when you actually run out of fuel.

If your problem is indeed related to air in the fuel system, I would think that it would be somewhere in a fuel line and not the tank itself.

Regarding the fuel cap... One way of distinguishing a gas cap from a fuel (diesel) cap is that a gas cap may say "gas" on it, whereas a fuel cap will not. Absent that, I believe fuel (diesel) caps are vented, i.e. you should see some vents under the cap when you flip it over. A gas cap will not have these vents because they are designed to create and hold a vacuum. Also, even if you do have a proper fuel cap... it may have "gone bad" and somehow be holding a vacuum... so it might be a good idea to go to an autoparts store and get a new diesel-specific one anyway.

By the way...

Have you changed your fuel filter lately? A clogged filter in the fuel manager might also be your problem.

I hope this helps.

Thanks and take care.

More later...

Z.

fuel pickup tube in the tank could be rusted at around the 1/4 tank point. Just a thought.

will92104 thats what i was thinkn that its bad toward the bottom of the pump... not letting it pick up the right amount.. but then again i have no clue. this is my first diesel beside my dozer and my 966 front end loader.... also to the other answers the cap is black and i turn it over and it looks like it has a vent in the middle.... im thinkn that i might go and get a new cap.. first fix the hole in the bottom of the tank. the hole in the tank looks to be DIRECTLY under the pickup pump if the pump is in the center of the tank.. im going to drop the tank tomorrow and pull the pump and look at it.. and fix the tank... thanks everybody for your help......

ok so i dropped the tank.... i pulled the pump out and noticed that the black hose wasnt hooked on at the top.(inside) the black hose hooks to a little fitting and runns all the way to the bottom by the screen.. what is this black tube for..( im thinkn this is my stalling problem at 1/4 tank and less) maybe maybe not.....

I cant remember how that thing looks inside,is that black hose hooked up to the return tube maybe?Cause the fuel return line runs to the bottom of the tank too,creating a closed loop.
It prob wont cause the stalling but can cause a prolonged or no start due to fuel bleed back from the IP,with air entering up the return line

I cant remember how that thing looks inside,is that black hose hooked up to the return tube maybe?

Yes.

I would think that a hole in the bottom of the take would lead to some excess foaming of the fuel. The vaccum in the tank is supposed to limit the amount of sloshing, thereby eliminating foaming, as I understand it. At 1/4 tank my fuel gauge sloshes all the way to empty when i step on the go pedal. Maybe you are sucking up all the foam at the top?

Ryan

I would think that a hole in the bottom of the take would lead to some excess foaming of the fuel. The vaccum in the tank is supposed to limit the amount of sloshing, thereby eliminating foaming, as I understand it. At 1/4 tank my fuel gauge sloshes all the way to empty when i step on the go pedal. Maybe you are sucking up all the foam at the top?

Ryan
I think you are on the right track, but here's my theory...

I think with the hose loose from the return line inside the tank the fuel would have to "fall" into the tank (which causes foaming) and the further it has to fall= more foam (1/4 tank is getting pretty far down there) While I agree the hole is a problem and could cause issues, I do not think it is a contributer to the foaming. After all, the hole could have just got there. He had said that there had been no fuel leaks and then he let the truck set and there it was, the leak could have just started (they all have to start at some point). JMO.

i think that you are all right.... on the black hose thats not hooked up.. could that be putting air in my lines..... and now that i think about it i have noticed on the right side of the frame its been looking wet. for months.. but i didnt think of it being a problem... and the hole in the tank is under the pump like it rubbed or somthing.. im going to hope to patch the tank and put all back together today before the snow hits today....

i think that you are all right.... on the black hose thats not hooked up.. could that be putting air in my lines.....
and now that i think about it i have noticed on the right side of the frame its been looking wet. for months.. but i didnt think of it being a problem... and the hole in the tank is under the pump like it rubbed or somthing.. im going to hope to patch the tank and put all back together today before the snow hits today....There is your main prob right there,leak in the fuel supply line/hose,with increasing vac in the tank and lower fuel level the LP is sucking air in the line.After shut down the fuel is bleeding back causing the wet spot on the frame .

OK sooo since i dont have the cash to get a new tank and cant wait 2 or 4 weeks to have one shipped ... what is the best thing to use to patch the leak... its a tinnnnyyyy hole not much bigger than a needle (so i think) i was thinking maybe jbweld. but i dont know......

Por-15 will seal that tank forever
Google it

cool man thanks..... i wounder if napa here will have that in stock.... since they dont even carry a simple oil filter or windsheild wiper.... what a joke i hate this town...everything has to be orderd and then ontop of that you have to still pay for shipping even though its through napa

Go online to get it,napa prob never heard of it

as a very temp fix I have rubbed a bar of soap over a small pinhole, the soap repels the petroleum.

i went and bought some jbweld today.. to see if that will work.. i ruffed up were i had to put it that way there is more holding area...... hope it works good.. damn snow is here and i want to play

ok so i got the leak fixed(for now) put the tank back up. and drove it ran awsome. starts way better, but then i took the wife and kids to the store tonight freeeezn cold didnt bring the cell phone and the damn thing died like 10 times. i live about 2miles away from the store... im going to loook for a new pmd with a relocator. if i get my money soon........ hope it works