Truck died. Fuel issue.

[PAT]

Take off from a red light, driving normally, and kaput. Truck flat out does. No sputter. No anything. Coast over to the side of the road and smell fuel as I try to crank it again. Pop the hood and see fuel on the cold side ic tube, fuel filter, firewall and on the exhaust manifold under the #1 and #3 cylinders. Fuel filter has pressure when I turn on the lift pump. By grabbing the soft lines with my finger tips (post filter pre cp3) the lines feel like they have pressure. Banjo bolts to the ficm are dry. Valley around the cp3 and the cp3 it's self is dry. When cranking the truck does not sputter or attempt to fire what so ever.

I have not scanned for codes as I'm still on the side of the road. Anyone have any ideas on what I should check first?

 

[super diesel]

Did the fitting at the back of the passenger side rail come loose or one of the injector lines back there?

 

[dmax711]

Did the fitting at the back of the passenger side rail come loose or one of the injector lines back there?

x2, somethiings pissing fuel everywhere

 

[PAT]

Not that I can tell at this time. Everything seems dry except those few places. All the injectors and all around the glow plugs. I'm starting to think its this wack ass industrial cp3. But idk were that fuel would be coming from.

 

[super diesel]

Your probably going to have someone try to start it while you look in there to see where it may be leaking/squirting from.

 

[paint94979]

Your probably going to have someone try to start it while you look in there to see where it may be leaking/squirting from.

x2

 

[travistim_69]

Your probably going to have someone try to start it while you look in there to see where it may be leaking/squirting from.

X3

it does sound like its coming from the fuel rail and is only leaking when cranked or running, just be sure to put on some glasses when looking for that leak so you don't get a money shot of diesel in the eye:thumb:

 

[ripmf666]

I had this happen wif sensor came loose. Also a return line off the top of the injector would do this.

 

[blk smoke lb7]

I had this happen wif sensor came loose. Also a return line off the top of the injector would do this.

A return line wont keep it from running will it?It will just leak massivly right?

 

[PAT]

Well... Got the truck towed home behind a dodge it was a little too late to tear into it. So I'm still lost. But I'll take a look at it today after work and see what I find. Im just kind of baffled.

A return line shouldn't make the truck stop running. It would just spray fuel all over. I may delete the fuel filter just to take it out of the equation.

 

[ripmf666]

A return line wont keep it from running will it?It will just leak massivly right?

Well... Got the truck towed home behind a dodge it was a little too late to tear into it. So I'm still lost. But I'll take a look at it today after work and see what I find. Im just kind of baffled.

A return line shouldn't make the truck stop running. It would just spray fuel all over. I may delete the fuel filter just to take it out of the equation.

If you can not build enough rail pressure it will not start. Also in your first post your saying its dry around the cp3 then in your 2nd post your saying (I'm starting to think its this wack ass industrial cp3) Not the cp3 if the valley is dry.

 

[PAT]

If you can not build enough rail pressure it will not start. Also in your first post your saying its dry around the cp3 then in your 2nd post your saying (I'm starting to think its this wack ass industrial cp3) Not the cp3 if the valley is dry.

I said that just because there seems to be no fuel at all getting to the cylinders. It is dry in the valley. But its almost as if the cp3 isn't working at all. It's still all inconclusive untill I can get under the hood to investigate it further.

 

[Akdiesel]

Bump for ya bud...Hope you get it ironed out. sorry you had to be towed home by a Dodge...better than if you were out here and it was by my Ferd rofl

 

[super diesel]

Well... Got the truck towed home behind a dodge

OO! Brings me back to yester year back in 03 when I got towed home by my buds Dodge because I had suffered a bent tie rod at the hands of a Toyota with a stupid kid at the helm. Almost flipped the Toyota when he hit my passenger side front tire. Every one was giving my Dodge friend the thumbs up. Couldn't have that any more. Duramax tie rod sleeves were born. Sorry to derail.

Did you check the pressure sensor for tightness or for leaks Pat?

 

[TrentNell]

Pat if you need a hand give me a shout , I have spent many many hours diagnosing different fuel problems . 801-599-3922

 

[PAT]

Ok thanks Trent. I'll be tearing into it within the next hour or two.
@super diesel... No I haven't. Where is the pressure sensor at? The only leak that was obvious was on the passenger side. Is that where it's at?

 

[super diesel]

Yes. Passenger side rail about mid way between the two injector lines.

 

[PAT]

Ok fellas... Took a look at it today. Didnt take long to figure out where it was coming from. This is how it went...
Took a look after the truck was sitting for 2 days. Everything was dry. Removed cold side ic tube and cranked the truck for ~5sec. Took a look again. Fuel was steadily coming out of the #3 cylinder around the injector and glow plug. Had a person crank the truck while I took a look under the hood and could see it coming out around the area. Not sure if it's seeping around the plug or around the injector cup.

 

[jc1843]

The LLY does not have injector cups--

The fuel return line is there , but that will not keep it from running. If the injector is damaged, it could reduce the line pressure. Might pull the injector for further checks.

 

[jonathancasey19]

Glad you found the problem. FYI, even if the valley is dry, never rule out a cp3 failure. Most people assume it would blow a freeze plug. Wrong. I had one completely seize up, sheared the shaft in half, mushrooming the nut onto the gear. Motor would crank but no fuel. The next cp3 seized, blew a freeze plug and locked up the motor.....good times.