[imelmo]

I was backing the truck out today and it killed on me. When I got out I saw dieseldripping somewhat heavily on the ground near the rear passenger side of the engine. I haven't looked at it real carefully yet, but checking briefly up top I couldn't see anything, even in the valley. On the bottom, looks like it's running down the back of the block and hitting the flywheel which is slinging it to the passenger side. I'm gonna look at it closer later.

On the truck killing, it'll be just sitting there idling then have a "miss" or die. Ran Autoeninuity and the only code that came up was when I did the cylinder contribution test- P0269 (Injector Circuit Contribution/Balance Fault). No cps codes or anything out of the ordinary other than that. It had missed on me once or twice before over the past couple of months, but it's started doing it more frequently this week.

Oil and water levels are fine, no fuel smell or feel to them.

Any ideas?

Only other known thing wrong is a leaking up-pipe, which I'm addressing next weekend.

 

[PTSUPERD]

Is the leak related to the O rings on the back of the fuel bowl at the valve?

Thinking out loud. Had to change mine a while back. Dont think it would cause it to die though.

 

[02Bluestroker]

sounds like you may have a leak in the valley area, if you still have the drain on your engine it come out right by the starter on the passenger side, so if your regulator or something up there is leaking that would be the cause....

 

[Pocket]

Maybe one of the fuel ports on the rear of the heads is leaking, either where your regulated return line connects to, or where the fitting bolts into the port.

As for the engine dying, didn't you change your CPS not too long ago? Once you rule out the CPS, start monitoring ICP pressures with AE and see if you find pressure dropping when it's running rough or dying.

 

[Haul_n_horses2]

Danny, I'm with Pocket. I would look carefully at the lines going to the back of the head, especially if you have the DI regulated return. Also look carefully at the hose going to the passenger side head and it's relationship to the turbo outlet/downpipe. Any recent fuel system changes? A call to Slim might be in order.

 

[imelmo]

Yeah, talked to him. He said the same thing about the fitting on the back of the head so I'll check that closer after work. Still trying to figure out the dieing part. I watched icp briefly but it didn't die or miss while I was watching it. It runs perfect and then out of the blue it'll kill (or try to kill). No sudden roughness or anything. Acting just like an icp going out. I may go ahead and swap it even though there's no code for it.

Still gotta figure out why I'm getting that P0269 code though.

 

[TerminatorEngineering]

IDM?

 

[bigrpowr]

could it have something to do with shimming the cam?

 

[Slated4Greatness]

Could it be sucking air in the fitting that is leaking fuel?

 

[DarkShadowDiesel]

i would still check the CPS - when mine failed i never even got a code and it would try to die and sometimes actually die.
hope you get it fixed.
on the fuel definitely check those o-rings, this fuel has been eating them up on some of the trucks i've seen. maybe you have a leaky hose fitting on the reg kit? is it fed in the 1/8" port or the big one directly in the back?

 

[Pocket]

Still trying to figure out the dieing part. I watched icp briefly but it didn't die or miss while I was watching it. It runs perfect and then out of the blue it'll kill (or try to kill). No sudden roughness or anything

Exact same symptoms I had when my IPR was going out. No codes no warning. ICP sensors will typically set a code, but a bad IPR is a sneaky little bastard.

Still gotta figure out why I'm getting that P0269 code though.

That was the injector David dropped when he played that prank........ :doh:

Maybe it's a bad injector, injector harness, chaffed wire, IDM, etc.

Could it be sucking air in the fitting that is leaking fuel?

Nah, on those fittings there's too much fuel pressure to suck air in. He would have to have a leak somewhere pre-pump.

 

[DarkShadowDiesel]

does a bad UVC cause some of these symptoms? cutting out, code, etc?

 

[Pocket]

does a bad UVC cause some of these symptoms? cutting out, code, etc?

Yeah but you'd usually get more than one cylinder popping up with a problem.

 

[imelmo]

Well, found the up-pipe leak. Blew a hole about the size of a quarter on the driver's side at the flange where it meets the turbo.

No luck with the frigin' fuel leak though. Completely dry on the back of the head. I can see it coming off the the edge of the passenger side of the trans pan and coming over to the starter, but can't see where it would be coming from above that. Any ideas?

I'm gonna change my cps out tomorrow just for chits and giggles to see if that stops the miss.

 

[DarkShadowDiesel]

are you feeding the fuel directly into the back of the heads? those fittings are a bit lower - maybe bad hose end or something? or the plug could be leaking...?

 

[TerminatorEngineering]

Check the front fittings. It's probably running down the front and running along the oil pan lip.

 

[boggerr]

Do you still have the fuel bowl on there and drain pipe? Could be spraying back from that.

 

[skylinedan]

I kinda wonder about the CPS because of the probs you had,but the data is interesting due to no codes or lose of sig. regaurding the CPS. I would say electrical because it just dies like you turned it off ., Look all your grounds over, all the plugs that kind of stuff. has to be some thing stupid.

Dan

 

[BDRUMMONDS]

You Kids and your mods..... Its that $0.09 10K resistor thats causing the rough idle and dying . oke:

you dont think the head is cracked at the back fuel port do you? Did slim drill those out and enlarge them for larger lines?

 

[Cat_Rebel]

I think you need to pull that engine out & tig that cam like Bean was saying awhile ago. It's about the only way to fix that wondering cam problem.