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 Post subject: Re:
PostPosted: Sat Jul 17, 2010 10:02 pm 
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Wobbly wrote:
Well, even if the new filter head does solve the air problem without the need for a lift pump, there have been reports of improved fuel economy, less turbo lag, and longer tire life after a lift pump is installed. :twisted:

Good one Wobbly,
We dropped the tank, switched out the pump, plugged in a wire and hooked up a ground wire. Oh, I bent the new float to indicate a lower fuel level but it worked out about right. I agonized over it, the pump cost $160 but it took a crip(me) and the kid a couple of hours to do it.
When I change filters I just crack the bleed valve with a wrench and do put on a little hose because the fuel sure does spray out, 20 second timer on the start up. I never had to replace the fuel head because the pump keeps fuel in the heater so it does not melt.
The real reason I did the pump, besides making life easier, was when I eventually got a good T/C and a good flash, I knew this little diesel would pump out some power. Yes, my fuel mileage is down, yes my tires wear too fast and my big problem now is instability at high speed because of lift and tall tires and I drive too fast.
To all the guys without a pump, great!
My rattling little hawg is smoking sweet and the fuel pump is just pure gravy.
Good luck with your rig.

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 Post subject: Re: New Fuel Filter Head: Cure for Air Leaks?
PostPosted: Sun Jul 18, 2010 8:23 am 
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cyman73 wrote:
Hello,

I have owned a 2006 CRD since April, now with 63K miles. I am not sure that I ever experience any of the air leak symptoms. Well one time I lost power, the engine wouldn't rev and I could barely reach 10 mph. I pulled over, turned the engine off, restarted it, and it ran just fine after that.

I do want to replace the filter soon. How hard is the lift pump installation to do? Any good writeups on how to do the mod?

Thank you.


There are write ups in the CRD Tech section. DON't Post questions there though. See the message in the first post :jester:

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 Post subject: Re:
PostPosted: Sun Jul 18, 2010 4:51 pm 
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grywlfbg wrote:
Guess I should count myself lucky. 80k miles and never a problem w/ air in the lines (stock except for mods below). Only changed the fuel filter once in that time :oops: and had to prime it when that was installed but never needed otherwise.

I keep thinking I should install a lift pump but I don't have any air-in-fuel symptoms so maybe I'll just let it be.




By design, you have air in there and just don't know it.

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 Post subject: Re: New Fuel Filter Head: Cure for Air Leaks?
PostPosted: Sun Jul 18, 2010 9:58 pm 
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Well I have finally ddeveloped an air leak I guess. Left the CRD parked for 3 days on a slant of 12 deg+ and started it up, ran for about 6 sec and then it shut off. Since this is the first time it has done it I went around tot he primer pump and pumped till it was hard again. Ran like a champ. This cycle lasted about 4 days whrn the KJ was parked at the house overnight. Took 500 mile trip to Galax, VA and it has done it one time since after it was parked for more than 24 hrs.

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 Post subject: Re: New Fuel Filter Head: Cure for Air Leaks?
PostPosted: Sun Jul 18, 2010 10:19 pm 
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jinstall wrote:
Well I have finally ddeveloped an air leak I guess. Left the CRD parked for 3 days on a slant of 12 deg+ and started it up, ran for about 6 sec and then it shut off. Since this is the first time it has done it I went around tot he primer pump and pumped till it was hard again. Ran like a champ. This cycle lasted about 4 days whrn the KJ was parked at the house overnight. Took 500 mile trip to Galax, VA and it has done it one time since after it was parked for more than 24 hrs.




Just pumping the primer won't solve it. You have to crack open the bleeder and let it out.

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 Post subject: Re:
PostPosted: Mon Jul 19, 2010 6:21 pm 
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Wobbly wrote:
Well, even if the new filter head does solve the air problem without the need for a lift pump, there have been reports of improved fuel economy, less turbo lag, and longer tire life after a lift pump is installed. :twisted:


i believe that a lift pump would also help relieve stress that is put on the CP3 and there for make the CP3 last longer as well.

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 Post subject: Re: New Fuel Filter Head: Cure for Air Leaks?
PostPosted: Mon Jul 19, 2010 6:24 pm 
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BVCRD wrote:
jinstall wrote:
Well I have finally ddeveloped an air leak I guess. Left the CRD parked for 3 days on a slant of 12 deg+ and started it up, ran for about 6 sec and then it shut off. Since this is the first time it has done it I went around tot he primer pump and pumped till it was hard again. Ran like a champ. This cycle lasted about 4 days whrn the KJ was parked at the house overnight. Took 500 mile trip to Galax, VA and it has done it one time since after it was parked for more than 24 hrs.




Just pumping the primer won't solve it. You have to crack open the bleeder and let it out.


i will get to it this weekend when I have time. 19 days and 1 day off sucks.

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 Post subject: Re: New Fuel Filter Head: Cure for Air Leaks?
PostPosted: Mon Jul 19, 2010 6:34 pm 
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jinstall wrote:
BVCRD wrote:
jinstall wrote:
Well I have finally ddeveloped an air leak I guess. Left the CRD parked for 3 days on a slant of 12 deg+ and started it up, ran for about 6 sec and then it shut off. Since this is the first time it has done it I went around tot he primer pump and pumped till it was hard again. Ran like a champ. This cycle lasted about 4 days whrn the KJ was parked at the house overnight. Took 500 mile trip to Galax, VA and it has done it one time since after it was parked for more than 24 hrs.




Just pumping the primer won't solve it. You have to crack open the bleeder and let it out.


i will get to it this weekend when I have time. 19 days and 1 day off sucks.





I do mine once a week or every 500 miles. It currently takes 15-20 pumps total, doing it 4-5 pumps at a time before releasing the air to get it all out. Takes less than a minute.

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 Post subject: Re: New Fuel Filter Head: Cure for Air Leaks?
PostPosted: Mon Jul 19, 2010 8:26 pm 
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BVCRD wrote:
I do mine once a week or every 500 miles. It currently takes 15-20 pumps total, doing it 4-5 pumps at a time before releasing the air to get it all out. Takes less than a minute.


That just means that you have Institutionalized the bandaid.
the word solution - would mean that you never have to pump anything (unless you're changing a filter)
so a New style fuel head and/or a lift pump - are solutions - not permanent bandaids.

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 Post subject: Re: New Fuel Filter Head: Cure for Air Leaks?
PostPosted: Tue Jul 20, 2010 5:59 pm 
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ATXKJ wrote:
BVCRD wrote:
I do mine once a week or every 500 miles. It currently takes 15-20 pumps total, doing it 4-5 pumps at a time before releasing the air to get it all out. Takes less than a minute.


That just means that you have Institutionalized the bandaid.
the word solution - would mean that you never have to pump anything (unless you're changing a filter)
so a New style fuel head and/or a lift pump - are solutions - not permanent bandaids.




Probably when I wear out the primer, I will go that route.

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 Post subject: Re: New Fuel Filter Head: Cure for Air Leaks?
PostPosted: Tue Jul 20, 2010 6:01 pm 
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BVCRD wrote:
I do mine once a week or every 500 miles. It currently takes 15-20 pumps total, doing it 4-5 pumps at a time before releasing the air to get it all out. Takes less than a minute.


I refuse to do this in the driveway or in the garage and possibly stain the concrete or stink up the garage, they are not mine. When I can get to the Auto Hobby Shop on Quantico again (Sat) I will take care of it.

BTW I use speed bleeder on the race car, in theory I should be able to use one on the fuel head right?

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 Post subject: Re: New Fuel Filter Head: Cure for Air Leaks?
PostPosted: Wed Jul 21, 2010 12:11 am 
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jinstall wrote:
BVCRD wrote:
I do mine once a week or every 500 miles. It currently takes 15-20 pumps total, doing it 4-5 pumps at a time before releasing the air to get it all out. Takes less than a minute.


I refuse to do this in the driveway or in the garage and possibly stain the concrete or stink up the garage, they are not mine. When I can get to the Auto Hobby Shop on Quantico again (Sat) I will take care of it.

BTW I use speed bleeder on the race car, in theory I should be able to use one on the fuel head right?




I use an old sock. I pump up the bleeder 5 strokes or so.....then open the bleeder and catch any sputtering in the sock. I do this till I get a steady stream of fuel without bubbles.

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 Post subject: Re: New Fuel Filter Head: Cure for Air Leaks?
PostPosted: Wed Jul 21, 2010 12:57 am 
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BVCRD wrote:
I use an old sock. I pump up the bleeder 5 strokes or so.....then open the bleeder and catch any sputtering in the sock. I do this till I get a steady stream of fuel without bubbles.

FWIW, I drilled a hole in the top of a pill bottle to the appropriate size for the bleeder tube that can be attached into the new head unit's bleeder valve. When I last replaced my fuel filter, I was able to pump a few ounces of fuel into the container, making sure all the air was drained from the system, and then return the fuel to my tank.

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 Post subject: Re: New Fuel Filter Head: Cure for Air Leaks?
PostPosted: Wed Jul 21, 2010 1:05 am 
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Anybody here invented a better version of the wheel yet? B/c seriously... There is WAY too much brain time being spent on this Chrysler-invented problem.

Since I have installed that lift pump at the tank, I have changed the filter several times. Have I touched the primer button? Not once. How then do I refill the new filter? Uhm... I installed this magical filter-filler add-on to the lift pump. Its called... Turn the key on and let the PUMP do the work, and don't even worry about the air in the filter.

The CP3 was originally designed to use suction to get the fuel from the tank. We all know this. As such, it also has to be capable of purging some air by itself, or at least passing that through the high-flow lubrication and back into the return line where the tank has inversely alternating volumes of both fuel and air.

Really now... Pill bottles drilled to sit on that purge nipple? I'll give credit for an interesting and cheap solution... But was this really that big of a problem?

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 Post subject: Re: New Fuel Filter Head: Cure for Air Leaks?
PostPosted: Wed Jul 21, 2010 9:57 am 
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for those who like to re-invent the wheel - Greg still has some of his bleeder valve kits
http://lubricationspecialist.com/front/shop.aspx?catid=16&productid=70

(of course he's on vac this week - but great service when he gets back)

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 Post subject: Re: New Fuel Filter Head: Cure for Air Leaks?
PostPosted: Wed Jul 21, 2010 11:31 am 
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geordi wrote:
Anybody here invented a better version of the wheel yet? B/c seriously... There is WAY too much brain time being spent on this Chrysler-invented problem.

Since I have installed that lift pump at the tank, I have changed the filter several times. Have I touched the primer button? Not once. How then do I refill the new filter? Uhm... I installed this magical filter-filler add-on to the lift pump. Its called... Turn the key on and let the PUMP do the work, and don't even worry about the air in the filter.

The CP3 was originally designed to use suction to get the fuel from the tank. We all know this. As such, it also has to be capable of purging some air by itself, or at least passing that through the high-flow lubrication and back into the return line where the tank has inversely alternating volumes of both fuel and air.

Really now... Pill bottles drilled to sit on that purge nipple? I'll give credit for an interesting and cheap solution... But was this really that big of a problem?


That's what I do. Change the filter, turn on the key and let the lift pump push the air and fuel through the CP3. It can handle it.

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 Post subject: Re: New Fuel Filter Head: Cure for Air Leaks?
PostPosted: Wed Jul 21, 2010 12:26 pm 
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geordi wrote:
Anybody here invented a better version of the wheel yet? B/c seriously... There is WAY too much brain time being spent on this Chrysler-invented problem.

Since I have installed that lift pump at the tank, I have changed the filter several times. Have I touched the primer button? Not once. How then do I refill the new filter? Uhm... I installed this magical filter-filler add-on to the lift pump. Its called... Turn the key on and let the PUMP do the work, and don't even worry about the air in the filter.

The CP3 was originally designed to use suction to get the fuel from the tank. We all know this. As such, it also has to be capable of purging some air by itself, or at least passing that through the high-flow lubrication and back into the return line where the tank has inversely alternating volumes of both fuel and air.

Really now... Pill bottles drilled to sit on that purge nipple? I'll give credit for an interesting and cheap solution... But was this really that big of a problem?




I don't bleed it because I am or was having driveability issues. More of a preventative measure so the heater pluig won't overheat. Kind of like changing the oil or any other must do.

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 Post subject: Re: New Fuel Filter Head: Cure for Air Leaks?
PostPosted: Wed Jul 21, 2010 7:51 pm 
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geordi wrote:
Really now... Pill bottles drilled to sit on that purge nipple? I'll give credit for an interesting and cheap solution... But was this really that big of a problem?

Geordi, you must've misread me. I use this once every 25k miles, when I change my fuel filter... Otherwise, I have no problems. For something I do once every three years or so, I'm not installing a lift pump.

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 Post subject: Re: New Fuel Filter Head: Cure for Air Leaks?
PostPosted: Thu Jul 22, 2010 1:31 pm 
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For craps sake when you change the filter FILL up the new filter. No priming involved. Just starts right up. Priming pump shouldn't even be on the filter head. Just something else to leak. Talk about re-inventing the wheel. This forum is full of examples.

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 Post subject: Re: New Fuel Filter Head: Cure for Air Leaks?
PostPosted: Thu Jul 22, 2010 3:02 pm 
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onthehunt wrote:
For craps sake when you change the filter FILL up the new filter. No priming involved. Just starts right up. Priming pump shouldn't even be on the filter head. Just something else to leak. Talk about re-inventing the wheel. This forum is full of examples.




You don't want to do that. Unfiltered fuel going into it can wreck things. This is a quote from Joe Romas.........


One of the big engine companies warns against pre filling the filters on the transit busses my son-in-law works on. Very simply the possibility of dirt getting into the precision high pressure ($$$) pumps is too great. They are around 29,000 psi
Also what is the lubricity of Sea Foam It's fine for my 2000 4.0L XJ but not for my CRD For that I put in half a gallon of B20 every fillup.

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