Jeff MCKC.......ARE YOU READY YET?

[JoeyG]

LBZ Duramax. He was getting a low rail pressure and a couple other faults.

[BBR]

My business partner has an 06 LBZ and his has gone into limp mode several times while towing due to low fuel pressure at the rail. He can shut it off for a few minutes, crank it up and it will be fine for a while. He changed filters and so far it has been doing better. I would suspect it has a failing pump though.

[JeffMcKC]

There is a sevice message for a fuel line with a 90* bend that breaks down and starts to restrict flow out on mine. I will crawl under it tonight. I have a code reder when it goes into limp mode I can clear the code and it takes off fine again.

[BBR]

Sounds exactly like what Andy's keeps doing. Let me know if that turns out to be the problem.

[JeffMcKC]

Just wanted to show how I fixed a couple of kinked/collapsed hoses on my truck after discovering TSB# PIP4526. This is what the TSB says:

TSB #PIP4526: DieselEngine Fuel Line Repairs - keywords DTC hose kink loss P0087 P0093 P1093 pipe power reduced repair restrict restriction SES suction supply vacuum - (Nov 7, 2008)

Subject: Diesel Engine Fuel Line Repairs


The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:
A dealer may need to perform a repair on the rubber portion of the fuel supply (suction) lines. The rubber section of the line could become kinked or collapse. Fuel lines that kink or collapse may induce a fuel system restriction (high vacuum gauge readings) or DTCs P0087, P0093, and/or P1093 to set.

If a technician was to suspect the rubber portion of the fuel feed line collapsing or kinking, replacement of only the rubber line is acceptable.

Recommendation/Instructions:
Complete the steps below to repair the rubber section of fuel supply line:

Carefully cut, split, and remove the OEM crimp from both ends of the flexible hose. These crimps can be cut with a small cut-off wheel. Split the crimp into two pieces (use your discretion on first cut location, then cut directly across from, or 180 degrees from first cut). Special care must be taken not to damage the flare on the end of the steel pipe that will be reused.
Remove the OEM crimps and flexible portion of hose from the existing supply line.
If replacing the rubber section of the supply line, a 1/2 ID hose meeting SAE specification 100R3 is suggested. Dealers may be able to find a local supplier for this hose, or can contact the manufacturer Parker Hannifin. The replacement hose would be a 1/2" diameter Parker part number 601-8 or H017-8. To find a local distributor the Parker website can be accessed.
Use worm type hose clamps (use double clamps on each end) to attach the replacement hose to the existing pipe.



The above picture shows how kinked my supply line on the engine was. I replaced both sections of braided rubber hose on the supply line. One is on the left side of the engine by the glowplug controller, and the other to the drivers side of the transmission.



Using a dremel with a small cutting wheel I cut the permanent crimps off of the rubber braided lines. I started from the rubber side working my way towards the metal tubing. The crimp butts up to a flare on the metal line. I stopping cutting just before this flare to avoid damaging it. With the majority of the crimp cut I was able to insert a flat tip screwdriver and pry the crimp apart. Using the screwdriver and prying the crimps apart allowed me to get by without making opposing cuts per the TSB. The above picture shows where the lines were getting weak and where I made my cut.

After getting the oem crimps removed it was as simple as cutting hose to length and installing them with double hose clamps on each end. The next three pictures show what I ended up with.





Note: You may want to disconnect the supply line from the tank if your doing the line next to the tranismission, it is lower than the tank and will not stop leaking. I chose to try and be quick and ended up with a decent amount of fuel on me.

[A/Fuel]

I was trying to get a crimper for those lines, I seen one the other day for $1800. I don't know how many you do, but that's still a lot of money for even the ammount I do. Then you could do it at home, I usually have to have them crimped.

[JeffMcKC]

You cut the crimp off and just double clamp using the hydraulic hose style clamps which dont cut into the hose.

[BangShiftChad]

So I guess that means that Jeff is all good to go! The car sounds super bitchin by the way. It's all happy and fresh and so is Doc's car. Here's to all the BangShifters doing well on Drag Week!

[lun40119]

Not sure where to put this, so this is as good as place as any. I hit my head so hard with a breaker bar last night I am still seeing stars. Even after trying to drown it with Miller lite..............that is all.

[Orange65]

Not sure where to put this, so this is as good as place as any. I hit my head so hard with a breaker bar last night I am still seeing stars. Even after trying to drown it with Miller lite..............that is all.

That is your wife's job.. not yours.

In all seriousness, if you are still seeing stars, you might want to see a doctor.

[lun40119]

You should see the goose-egg on my forehead......my friggin hat doesn't even sit right.....

[JeffMcKC]

Motor boat it, that always helps. That is all.

Oh, and I am no done yet. That is all.

[lun40119]

I am all loaded up and ready to go.....

[BBR]

You didn't try hitting it on the opposite side to even it out?!?!?

[lun40119]

I don't want it to end up looking like yours.....