No appology neccesary. My comment was not in regard to you. You apparently understand the problem well. I was makeing refference to the comment about masking the problem with a lift pump. A pressurized fuel system is ALWAYS better than a vacuum draw.

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Manure green 2005 CRD sport4x4, GDE Hot tune, Cat Gut, OE skids, Draw tight hitch, Duramax lift pump, 160K on multiple varieties of fuel, XM radio, Escort live with Redline, fog light mod, GPS, Icom IC7000 all band radio call sign KC9QPF, Grabber AT2s on Soft 8s, FIA grill blanket.

Sorry, I am not an expert. I may be a newbie here, but I grew up around diesels on the farm. Every engine we had, had a vacuum fuel system! I do admit none where common rail engines. My point is that a system with a leak is a problem(vacuum or pressure). Pressurizing the libby may solve the air leak, but if you are going to spend the money why not fix the problem( the leak). A properly running system, is always, better than one with a leak (vacuum or pressure). Maybe Chrysler should have used differnet connections down by the tank. That can be fixed cheaper than adding a pump?

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long live the diesel
Greendieselengineering
Full torque Eco-tune
0w40 oil
Mostly stock
Diesel's are towing machines

I'm not trying to be mean, it's just that this subject has been beat to death over the years here. Most who have had air in fuel issues, have achieved a complete cure with a lift pump, even though there is no leak big enough for fuel to squirt out of. Air can pass through a microscopic hole with ease, but diesel cannot. Another issue which occurs with this system but not with the units you have on your farm, is that the 3 micron filter strips air out of the fuel when under vacuum, especially winter blends which might be found at a fuel station in summer.. I would also wager that you don't have any other vacuum draw type systems in your farm fleet, which have a top draw filter, placed at the highest point in the fuel system.

Vacuum draw systems can work well in many applications, but pressurized systems work much better. Have you ever tried to find an air leak in a vacuum draw system? Not fun. You are very right in that a properly running system is always better than one with a leak, DCX really dropped the ball on this one though, with their bean counting, as evidenced by the wiring and programing for the LP, but lack thereof.

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Manure green 2005 CRD sport4x4, GDE Hot tune, Cat Gut, OE skids, Draw tight hitch, Duramax lift pump, 160K on multiple varieties of fuel, XM radio, Escort live with Redline, fog light mod, GPS, Icom IC7000 all band radio call sign KC9QPF, Grabber AT2s on Soft 8s, FIA grill blanket.

Yup, the longest vacuum draw systems around here are Caterpillar but they have metal lines all the way to the IP. Older John Deere tractors have a lift pump on the block but metal lines to it as well. Both of these examples also have fuel tanks at or above the IP level too, there must be less vacuum then. Newer John Deere tractors have an electric pump in the tank, M35 series Army trucks (Deuce and a Half) have had an electric pump in the tank for 50 years! The singlely most annoying diesel on the place to prime is also the shortest length fuel system, a little chinese tractor with GRAVITY flow...

Chasing vacuum leaks in a fluid system is frustrating, like in the plumbing going to a hydraulic powershift transmission not long ago, just going through it methodically connection by connection, replacing o-rings, etc...

Seems like if you're gonna do the vacuum thing, use good fuel lines w/ solid connections and it'll work. Chrysler used what they already had and it doesn't. Time to study up on in-tank pumps and put my money down...

Thanks for all the info and input!

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abhester3
05 CRD Liberty, ARB bumper, 8k winch, GDE, OME, Helo/BFG K/M2
99 Dodge Cummins 4x4 w/ mods
86 M35A3
Bunch of other tractors, atvs, trucks, toys unmarried guys get to have

Most of us figured that out two to three years ago Some of us also got a pleasant supprise how much better they run when they get enough fuel

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Atlantic Blue 06 CRD Limited (his)
Joined by a 2000 XJ Classic (hers)

Followup: The dealer wants me to bring it back next week, they are aquiring official issue Chrysler 'clear plastic lines' to install on either side of the fuel filter housing. The idea is they run the engine and look for what are likely incredibly tiny bubbles, LOL!! But of course, no TSB exists and this is the first CRD to ever do this... I'll drop it off and have breakfast with a friend, though I know what I need to do (tank pump) I'm curious as to where Chrysler will go with the problem. WHY couldn't Toyota have brought a small TD SUV into the US market!?!?

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abhester3
05 CRD Liberty, ARB bumper, 8k winch, GDE, OME, Helo/BFG K/M2
99 Dodge Cummins 4x4 w/ mods
86 M35A3
Bunch of other tractors, atvs, trucks, toys unmarried guys get to have

my jeep dealer found the tsb,and doing ordering @ there cost.I need a lift pump but an inline one (my main tank is WVO now)any suggestions for a source of a 4 psi inline lift pump?

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2005 greaser KJ,jeeper greaser

Will it be pumping cold or hot WVO? If cold, you will need to have higher than 4 PSI unless you have some mondo diameter fuel lines. The HPFP-12, near the bottom of this page should be adequate. http://frybrid.com/parts.htm

The fuel pressure will be far less than twelve by the time the WVO gets to the IP after pushing through 20 feet of fuel line and a very restrictive filter or two. I have used a 15PSI pump in the CRD for both WVO and D2 without any smoking or strain on the IP at all.

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Manure green 2005 CRD sport4x4, GDE Hot tune, Cat Gut, OE skids, Draw tight hitch, Duramax lift pump, 160K on multiple varieties of fuel, XM radio, Escort live with Redline, fog light mod, GPS, Icom IC7000 all band radio call sign KC9QPF, Grabber AT2s on Soft 8s, FIA grill blanket.

WVO already has a lift pump in tank,which is 165F oil.My problem is I warm up on diesel switch to wvo and two hours later (or whenever destination and purge I have lost vacuum on diesel side and it either stalls after purge or on next start-up.ALL fuel lines have been replaced(Hose in hose for WVO),and diesel tank is running 1/2 inch rubber lines.I have traced problem to fuel head (go figure) and now need to figure out a lift pump for start-ups and shut downs (selinoid?) only on #2 side.Maybe a marine lift pump or something.I have a complete Racor filter set-up on the wvo side which is lower then fuel head.I am not very computer savvy (more hands on guy) I would like to post up my complete disk of install but don't know how (200+ photos).....................again sorry to anyone waiting on disk,my wifes and my own health have been a burden as of late...............H

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2005 greaser KJ,jeeper greaser

In that case, a ~40 dolar Airtex brand LP for a duramax will be sufficient. It is a shuttle type, and mine has given many happy miles of service.

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Manure green 2005 CRD sport4x4, GDE Hot tune, Cat Gut, OE skids, Draw tight hitch, Duramax lift pump, 160K on multiple varieties of fuel, XM radio, Escort live with Redline, fog light mod, GPS, Icom IC7000 all band radio call sign KC9QPF, Grabber AT2s on Soft 8s, FIA grill blanket.

I took my CRD to the dealer for a bad glow plug on #3. They told me upfront that this problem was not covered under the 7/75,000 warranty. If it was on #1 or #4, I may have done it myself but I wasn't in the mood to get at #3. Anyway, I have the cummins lift pump installed and it solved a lot of problems. I pulled the fuse on the pump before I took it in and just put the fuse in a blank spot for safe keeping. When I got the truck back, the fuse was moved back into the pump socket and the pump was humming happily. This tech must read this site or has a CRD of his own. I don't know if he looked for the SEGR or not. I plugged the by-pass in before I went in with it but, if he knew what to look for, he could have found it. He told me I needed a new cooling fan for $600.00 but I told him I would take care it. No problem with it so far.

Scott

I get a kick out of some of the expert newbys we have had lately.

abhester3: As far as I know, no one has had a problem getting warranty work done with a lift pump installed. If you are concerned about it anyway, you can always do an in-tank installation, and they will never know.

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White Sport '05 Libby CRD - born on date: 6/3/2005, FIA Grill Blanket, Fumoto drain plug, 2.8 CRD Turbo Diesel hood decals, Jeep windshield bug & stone deflector, Molded tire cover with custom JEEP & Liberty CRD decals, Cummins Lift Pump, Pro-vent, GDE Eco no limit tune, Odyssey 34R drycell battery, Meziere in-line stat, ETecno1 glow plugs

He was probably just putting the fuse back where the factory manual said it should be.

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Manure green 2005 CRD sport4x4, GDE Hot tune, Cat Gut, OE skids, Draw tight hitch, Duramax lift pump, 160K on multiple varieties of fuel, XM radio, Escort live with Redline, fog light mod, GPS, Icom IC7000 all band radio call sign KC9QPF, Grabber AT2s on Soft 8s, FIA grill blanket.

When pumping the manual primer pump this morning air bubbles came out an electrical connector at the fuel head. Called the dealer to see if they had the new fuel head and wiring kit, and if they would replace these parts under warranty. They said they would check with the "warranty administrator" to see if the 8/80,000 warranty applies. Could not find a copy of the TSB online. Does the TSB provide for free repair of this problem?

If under warranty it is supposed to be covered.............my CRD just turned 92,500 so I am SOL.............H

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2005 greaser KJ,jeeper greaser

Guess I'll be ordering the parts and doing it myself, after talking to Jeep. 8/80,000 Powertrain Warranty = service contract with 100$ deductible. Fuel head is not part of "powertrain"

What contract do you have? there are various levels that cover more or less parts.

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Atlantic Blue 06 CRD Limited (his)
Joined by a 2000 XJ Classic (hers)

mine was $130 for everything(new wiring and new fuel head),and I don't let my local dealer touch my jeep with a 10 foot pole.I went there once for a taillight assembly,the techs were outside smoking butts as I installed the rear passenger side assembly(the CRD logo is right there) and two of there ASE guys told me I need to put oil in my jeep because "that 3.7 sounds like its coming apart".No thank you,If I can't fix it my old TT mechanic will.................................

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2005 greaser KJ,jeeper greaser

Jeep 8/80,000 Certified Limited Powertrain Warranty

I have the "Maximum Care" with $100 deductable and bought it for 7/70. They offered more miles but nothing longer then 7 years. Looking at the paper just now it says it covers everything but wear items like brakes but does include "engine cooling & fuel system". It claims 5007+ parts are covered.

I just went out of bumper to bumper 3/36 in May and have not needed the extended one yet.

Joe

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Atlantic Blue 06 CRD Limited (his)
Joined by a 2000 XJ Classic (hers)

I tried to fix the leaking electrical connector. Cleaned it with MEK and then carefully put some Plastic Welder epoxy around the contacts base. Even put the filter head under a vacuum to try to pull the epoxy into the leak site. Next day it was leaking worse than before. Placed an order with Mopar Parts America for the new filter-separator and wiring kit. Price was $102 including shipping. Then received a message that the part was on extended back order and wouldn't be expected until around the end of October. Tried local dealers and found that one about 25 miles away still had one. Price was about $142. Ouch! Since we want to use the CRD to pull a trailer pretty soon, I bit the bullet.