fuel problems on my 95 12 valve
 

I Have A 1995 12 Valve 5 Speed 4X4. On Monday Here In Ohio It Was Negative 30 With The Wind Chill. My Truck Is Always Plugged In Not To Mention It Has 265,000 Miles On It. I Know What I Did Was Stupid So.Please No Condescending Comments. With An Eighth Of A Tank Of Fuel I Tried To Go Start It On Monday. It Ran (Badly I Might Add) For About 20 Seconds Then Shut Off And Hasn't Started Since. All Week I've Been Trying To Start It Priming It Cranking I, It Would Spit And Sputter Like It Wanted To Start But Never Fired. I Poured The Correct Amount Of Red 911 In The Tank And Tried. Still Sputtered But No fire So I Replaced The Fuel Filter. Poured Half Fuel Half 911 In The Filter Like It Says On The Jug And Now It Won't Even Sputter. Just Cranks All day And Doesn't Even Try To Start. Cracked The Injectors And Number 4 Oozes Slightly Number 1 U Can Barely See Get Any Fuel And None Of The Other Injectors Are Getting Fuel. My Local Advance Auto Expert Said It.could Be My Lift Pump But Idk Because It Sputtered And Tried To Fire Up Until I Replaced The Fuel Filter. I Don't Want To Buy A Lift Pump And Especially Not A Top Pump If It's Just Air In The Lines But Idk What To Do Now. Any Help Would Be Appreciated Thanks. PS It's 50 Degrees Here Now And Still Won't Start.

add fuel .... then re-prime ... I would imagine it would start then ..:tu:

Thanks For The Help. I've Been Priming It All Say And Yesterday And Still Nothing. Injectors Really Aren't Even Squirting Fuel. Just The Number 4 Injector Is(Seeping And Bubbling) Ever So Slightly. If You Aren't Paying Attention U Wouldn't Even Notice And That's With The Nut All The Way Off The Top Of The Injector.

I'm in Ohio as well, my truck was froze all last week, it just fired up two days ago with almost your symptoms. The fuel line between the LP and my fuel heater was froze. When I removed the line, it was gelled I guess. It looked like dried silicone in the line. Never seen anything like it. I reinstalled the fuel line and cracked it, but my truck did fire right up, but leaked. I'm waiting on my new fuel line now. My truck was plugged in as well. Good luck, just my .02

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I was running power service too during my freeze, with a fuel tank of fuel.

Well As An Update We Took The Fuel Filter Back.Off And The Line From The Filter To.The Injector.Pump. Turned It Over And No Fuel Is Flowing Anywhere. Not To.The Filter Not Out Of The Filter Mount Nothing. Would That Mean Mt Lift Pump Is Bad.

This isn't going to help with your problem, but.
If you turn off the caps lock, your posts won't look like that anymore.

might have poped the diaphram in the Lp ... hook it up alone to a can of fuel to check when u can ... verify its not working before replacing it ...:humm:

air leak?
 

Air leak?
Factory fuel system? Original LP?
My original LP primer bubble cracked and drew in air.
Can you check system for air leaks from tank to injector pump?
Another year my fuel heater electrical connection began to leak air into the system.
I live in Nebraska and I deleted the fuel heater also with no problems.
Both problems presented the same scenario you currently describe.
Also, there are rubber lines from the tank to frame.
Hope it helps.
DD

I'm with Diesel Duo on this one. I'm in NC, so I've never had my truck freeze, but I had the primer button on my lift pump crack. It started with the weep and the worse it got, the closer to your symptoms I got. The lift pump is easy to disassemble, so if you've already checked your pre-heater lines for cracks and obstructions, I'd snatch it out and inspect the button and plunger. If it checks out ok, you know to move onto the next part of the fuel system.

I know it's a p.i.t.a., I hate it for you, man. If it turns out to be your LP, let me know and I'll poke around and see if I have a spare. I just gutted a running '95, so I might still have it laying around.

Sounds like your lift pump is shot. Lets hope it didn't take the fuel pump with it.

To Answer All Your Questions Guys It Is The Stock Fuel System From The Factory Including The Factory Lift Pump. Only Mods Done To The Truck Are No Fuel Plate At All And Silencer Ring Removed From Turbo. Other Than That It's A Stock Truck With A 5 Inch Stack Lol.

Sounds like low fuel pressure,air leak somewhere in the fuel system or bad lift pump!:td:

Hey Guys Thanks For AllYour Help. This Is My First Diesel And Im Learning I Appreciate All You Guys Have Taught Me So Far. We Replaced The Lift Pump And While I Still Need Injectors Truck Runs Great. Smoke Black As Coal And Hardly Any White Smoke Anymore. Solved A Lot Of Problems By Replacing The Lift Pump. Thanks Again.

get a guage on it and might want to replace the overflow valve as well ....

hey I live in ohio too and ya that week sucked, I hear we're supposed to get blasted again so keep her plugged in, idk if you got her fixed but have you ever messed with the fuel heater? it should be right next to your priming button. oh don't start your truck up in the cold and not RUN IT FOR AWHILE, low charge batteries freeze easy in negative temperatures

Now i have a fuel leak somewhere. im not sure where it is coming from i thought the top line going into the lift pump but i tightened it down and wrapped it in xtreme tape. but i still have a leak could it be from this overflow valve? and where would i find it?

The OFV is on the backside of the injector pump, towards the front of the truck. It's pretty easy to see if it's coming from there, so I doubt that's it. There is a short little soft return line that runs along the block behind the injector pump and filter, it can be hard to tell if it's leaking from there but you might see it spitting out if you shine a light in at it from the front of the truck while it's running. With your mileage, I'd look there. You'll probably have to take off the fuel filter assembly to actually get at it, but that's not as big of a deal as what you've already done. Popping the line itself off is easy, and once it's out you can see if it's degraded. It'll probably look like new until you get it out in your hands. It's about a foot long, no big deal.

Ok Ok Im Not Familiar With That Line. Since I've Had The New Lift Pump On And Off About 5 Times Trying To Find The Leak I've Come To.Know A Lot Of Them.Quite Well. Lol. But It's Dripping Off The Bottom Of The Diamond Of The Lift Pump And It's Not Coming.From Anywhere I Can See AbovE It That's Why I Thought It Was TheHard Line On Top. Would U Think A Leak From That Rubber Line Would Drip Down Off The Bottom Of The Lift Pump If So I Bet That Jd My Problem.

90% sure leak is at your fuel heater.
Pressurize entire system via low air pressure through gas tank. Will force fuel/ air out.
May I post a link to a write up I did on another site?
DD

[QUOTE=Diesel Duo;1044832]90% sure leak is at your fuel heater.
Pressurize entire system via low air pressure through gas tank. Will force fuel/ air out.
May I post a link to a write up I did on another site?


Sure That Would Be Fine. I Welcome Any Help U Can Give Me.

link to my experience
 

Fuel heater delete thread:
Fuel Heater Delete - TheDieselGarage.com
Lift pump thread:
lift pump - TheDieselGarage.com
Hope it helps.
DD

I didn't even think about the fuel heater, good call.

Ok gentlemen. today i tore into the truck again since its the first warmish day ive had here in ohio. and i did the fuel heater delete. put it all back together and guess what. it still leaks fuel somewhere. all i can tell u is that i can see it dripping off the bottom of the lift pump diamond and its not coming from anywhere above the lift pump. i cant see any better than that. its not dripping down onto the lift pump from above and i cant see anything because the fuel filter is in the way for anything directly atop the lift pump or beside it. im getting extremely frustrated at this point and i cannot find any rubber line going along that side of the block for fuel either. so im out of options idk where to look.:scare2: Unless fuel comes out of the plunger on the lift pump that contacts the lobe on the cam. but i would think only oil would leak out there if it wasnt making a seal. am i wrong? to tell u all something i got a lift pump from advance auto and they dont come with gaskets. old one didnt have one either. never had a problem with it leaking. they told me it doesnt need it. theres one between the fuel heater bracket and the block but there was never one between the lift pump and the bracket.

You are missing a gasket.
I had a hell of a time lining up the gaskets with all the pieces. It took me and a buddy a few tries but we finally got her to seal.
You need a set of new gasket there. I do not have a diagram. Is there a Cummins Service Center (actual Cummins repair center) around you? They have a lot of odd parts I have needed in the past. (When I bought my truck I discovered the previous owner used caulk (or some derivative) as a grid heater gasket.) They had it in stock and cheap. Same with my lift pump. Cummins factory pieces from great people who know our engines.
Don't give up. :rocking:
DD