Noob here !! CRD loosing coolant.. hose connection ??

kibbleking · **Joined:** Fri Jun 29, 2018 9:16 pm **Posts:** 18

Hello, Liberty NOOB here,

Just got it yesterday. Been looking at the CRD for a couple years. very nice to drive.
So here is the problem. Its going through coolant. about a 1/4 gallon every 150 miles or so.
I don't see any coolant leak. Oil is looking normal. I'm suspecting its the EGR cooler ?? I found a
coolant flow diagram in another CRD Thread. looks like coolant may also flow through the EGR Valve ??
Am I on the right track suspecting the EGR system ? I'm planning to get a kit and remove that whole thing.

Thank you for adding me to the group.

Clancy...

GordnadoCRD · **Posted:** Sun Jul 01, 2018 9:42 am

Welcome!

Without seeing your vehicle I couldn't definitively say it's the EGR cooler, but you are correct, there is coolant to both the cooler, as well as the valve it's self.
A Weeks elbow kit eliminates both of those, as well as the FCV valve and the metal coolant return pipe coming up behind the alternator and over the engine, (Weeks 1) and the exhaust pipe that snakes behind the engine head from the rear of the exhaust manifold. (Weeks 2)

Edit: It will NOT stop the engine oil that comes from the CCV valve, through the turbo, and all the way to the intake valves. Everything between those 2 points will get coated with engine oil, and this is a normal thing for the way this engine was packaged and marketed.
If this bothers you like many others, (including myself) a ready solution fixes this problem, called a Provent 200 Essentially it coalesces and filters the vaporized fuel from the CCV, and removes it from the air returning to the turbo inlet. Problem solved. Much information about that in these threads if you take the time to search.

Happy Jeepin. :JEEPIN:

jws84_02 · **Posted:** Sun Jul 01, 2018 11:36 am

Do a cold test. When the engine is completely cold. Run it for 30 seconds then shut if off. Then take the coolant cap off. If there is pressure than it’s a head gasket issue

kibbleking · **Joined:** Fri Jun 29, 2018 9:16 pm **Posts:** 18

jws84_02,

I did the test.. I'm happy to report no pressure..
i hope its all that nasty EGR crap I'm going to toss
in the trash....

thanks

Clancy

Dgideon · **Posted:** Sun Jul 01, 2018 8:01 pm

Carefully check the radiator cap (the one on the overflow bottle) looking for rips or abrasions on the rubber sealing gasket. My 2005 was losing coolant and the new (OEM) cap fixed the problem with zero coolant lost in over 1 year. https://www.idparts.com/radiator-cap-li ... -2827.html Do no install a cheap cap that may not be up to the OEM specs.

Billybob · **Posted:** Mon Jul 02, 2018 2:10 am

Dgideon wrote:

Carefully check the radiator cap (the one on the overflow bottle) looking for rips or abrasions on the rubber sealing gasket. My 2005 was losing coolant and the new (OEM) cap fixed the problem with zero coolant lost in over 1 year. https://www.idparts.com/radiator-cap-li ... -2827.html Do no install a cheap cap that may not be up to the OEM specs.

Dgideon a quick question for you pleas seeing as you have dealt with these radiator caps before.

My 2002 Export CRD was overheating at one stage and I suspected the radiator cap.
The Service Manual states that when the cap is held in its normal orientation the rubber sealing valve...about 20 mm diameter...should fall down under its own weight with a definite gap to seen.....must not be spring loaded!

My radiator cap definitely has a spring loaded valve.
So I ordered a new one from the Dealers.....looked very different to mine....and it too had a spring-loaded valve so I handed it back.

So should a spring-loaded valve be OK and is the Documentation incorrect?

GordnadoCRD · **Posted:** Mon Jul 02, 2018 2:59 am

If it's not spring loaded, how does it hold pressure?

Billybob · **Posted:** Mon Jul 02, 2018 8:03 am

GordnadoCRD wrote:

If it's not spring loaded, how does it hold pressure?

Absolutely no idea! :shock:

But that is what they state and drawings to show it.....I also thought at the time that this system cannot work.

I am sure that both the 2002 Service Manual and the newer CRD manuals have the same description....I will check that out but I know that the Part Numbers were the same. :wink:

OK the Service Manual from the "2.5_2.8 export diesel" download from http://www.colorado4wheel.com/manuals/Jeep/KJ states on page 7-26:

"Hold the cap in your hand top side up.
The vent valve at the bottom of the cap should open.
If the rubber gasket has swollen, preventing the valve from opening, replace the cap.
Hold the cap in your hand, upside down.
If any light can be seen between vent valve and rubber gasket, replace the cap.
Do not use a cap that has a spring to hold the vent shut

The 2005 KJ Service Manual states that the cooling cap is located on the coolant pressure bottle for the 3.7L/2.8L Diesel engine and on the radiator for the 2.4L engine.
The cap construction includes.....a spring loaded valve

The 2006 KJ Service manual has a bit of a mess describing the pressure caps but they also state using a spring-loaded vent valve.

So it seems that a non-spring cap is supposed to be used on the Export 2.5/2.8L Engines.
This is of no major concern then as far as Lost Jeeps is concerned.....I will get onto the Ausjeepoffroad site where they have a lot of these Export models and ask them for their experiences but the Service Manual for these Export models is probably wrong!

I have an Electric Pressure Cooker at home that has a gravity operated valve that allows air to escape past it until there is too much air/steam trying to get through at which stage the valve shoots upwards and closes off the escaping steam. So maybe the Export Models have similar modus of operation where some pressure can escape until the pressure is too high and it forces the un-sprung valve upwards to shut the valve and allow the pressure to build up fully?

GordnadoCRD · **Posted:** Mon Jul 02, 2018 7:26 pm

If it's a different animal than the domestic ones, I have no idea.

It's not an expensive part, so buying one to see of it solves your problem shouldn't break the bank.

joe_ · **Posted:** Mon Jul 02, 2018 11:45 pm

GordnadoCRD wrote:

If it's not spring loaded, how does it hold pressure?

Apparently the expanding coolant eventually pushes it shut. There's an explanation here, about 1/3 of the way down the page: https://www.allpar.com/fix/engines/cooling-caps.html

Billybob · **Posted:** Tue Jul 03, 2018 4:06 am

GordnadoCRD wrote:

If it's a different animal than the domestic ones, I have no idea.

It's not an expensive part, so buying one to see of it solves your problem shouldn't break the bank.

Agreed....should not be too expensive.
However the Dealers here are terrible and I suspect that when I asked for my cap for the 2002 Export 2.5 CRD they ordered me the part for the 2006 CRD hence why it looked very different. :shock:

Billybob · **Posted:** Tue Jul 03, 2018 4:18 am

joe_ wrote:

GordnadoCRD wrote:

If it's not spring loaded, how does it hold pressure?

Apparently the expanding coolant eventually pushes it shut. There's an explanation here, about 1/3 of the way down the page: https://www.allpar.com/fix/engines/cooling-caps.html

Thanks for this great link joe....sort of the theory I used on how my electric pressure cooker works!

I have checked the part numbers needed.

2002 Export 2.5 CRD takes PN: 04596198

2006 all 2.8 CRDs take PN: 55037731AF

I will check with the Ausjeepoffroad site to see what owners there use.....I find it strange that there should be difference in cap types between old 2.5 CRDs and newer 2.8 CRDs as they are essentially the same engine type other than the engine capacity and the fixed vane Turbo on my model.

Thanks for everybody's input here....I will comment back when I get to the bottom of the matter but this issue is not of much interest here on Lost which mainly is for 2.8L CRDs. :wink:

kibbleking · **Joined:** Fri Jun 29, 2018 9:16 pm **Posts:** 18

Hello Everyone,

I went out this morning with a flashlight and inspection mirror looking for a coolant leak.
I may have found it.
Right at the bottom of the large main hose that comes off the bottom of the reservoir it
connects up to ??? Is that the water pump ?? Or thermostat ?? The clamps appear to be
somewhat corroded/crusty looking. And I found what looks like coolant dried onto the oil
filter " Wow..What a place for an oil filter " and the exhaust line.
Has anyone here ever had the fitting or hose leak in that spot ??

Thanks

Clancy

Noob here !! CRD loosing coolant.. hose connection ??

Who is online