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 Post subject: Hardline tubing on top of engine?
PostPosted: Tue May 14, 2024 11:37 pm 
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Posts: 26
I'm trying to identify what the tubing is for on top of the engine, directly behind the timing belt cover area, but before the first injector. (At least I think that's what I'm looking at.) I have a situation where I'm getting some gases pulsing out of that area. This is right where that tubing goes from hardline to rubber hose (at that connection). I was thinking that this must be part of the CCV, but it doesn't connect back to the puck. I can't actually tell where it goes, and I can't seem to find any info on it in my factory service manual either.

So does anyone know what this thing is, and where it goes on both ends? (It runs in the left-right direction. Left-side / passenger-side is the rubber part. Right-side / driver's-side is the hardline tubing part of it.)

In my case, I think the hardline tube is cracked or otherwise broken because it seems like the connection to the rubber hose is still solid. But I can hear the clicking/rattling/pulsing when the engine is running and smoke/gas vapors are puffing out of that area.

If anyone knows, I could really use some info on this.

I have a 2006 Liberty CRD.

Thanks all,
Jimmy


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 Post subject: Re: Hardline tubing on top of engine?
PostPosted: Wed May 15, 2024 1:19 am 
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If its the 5/8 hose, it is the coolant return hose from the EGR cooler.
It is a rubber hose that connect to a Y metal fitting. (picture below)
If you are getting exhaust gases out of it, it means the EGR cooler has failed internally and allowing exhaust gases to be pumped into the engine cooling system.
See diagram below.

Best option is to block off the EGR exhaust feed tube and do away with all the EGR cooling lines.
Or better yet, totally remove ALL the EGR CRAP!

Post some pictures if you can, it would help positively identify what you are referring to.

Metal Y hose fitting:
Image

Image

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05 Jeep Liberty CRD Limited :JEEPIN:
Ironman Springs/Bilstein/Shocks
Yeti StgIV Hot Tune
Week's BatteryTray
No FCV/EGR
Samcos/ProVent
SunCoast/Transgo
Carter Intank-pmp
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 Post subject: Re: Hardline tubing on top of engine?
PostPosted: Wed May 15, 2024 8:59 am 
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Joined: Sun Apr 27, 2008 2:14 pm
Posts: 287
Excellent diagram. I still need to purchase the Viscous heater delete kit from you.

WWDiesel wrote:
If its the 5/8 hose, it is the coolant return hose from the EGR cooler.
It is a rubber hose that connect to a Y metal fitting.
If you are getting exhaust gases out of it, it means the EGR cooler has failed internally and allowing exhaust gases to be pumped into the engine cooling system.
See diagram below.

Best option is to block off the EGR exhaust feed tube and do away with all the EGR cooling lines.
Or better yet, totally remove ALL the EGR CRAP!

Post some pictures if you can, it would help positively identify what you are referring to.

Metal Y hose fitting:
Image

Image

_________________
2005 CRD Limited
SEGR
WEEKS Kit (removed EGR, FCV),
Gen 2 Fuel Head
GDE Eco Tune
ARP studs
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F37
Kap 193 thermostat
Carter Lift Pump (Modified wiring harness)
Fumoto (CRD-108)
Bypass oil filter (2 micron)
Samco
Provent
Sears P-1 Battery
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 Post subject: Re: Hardline tubing on top of engine?
PostPosted: Wed May 15, 2024 11:31 am 
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Joined: Sat Aug 24, 2013 11:36 pm
Posts: 7190
Location: Central GA
taroo wrote:
Excellent diagram. I still need to purchase the Viscous heater delete kit from you.

I currently have several of them in stock ready for immediate shipment. :wink:
Please email or message me if you would like to purchase. Free Shipping in the US!

Image

_________________
Supporting Vendor and Moderator of LOST
05 Jeep Liberty CRD Limited :JEEPIN:
Ironman Springs/Bilstein/Shocks
Yeti StgIV Hot Tune
Week's BatteryTray
No FCV/EGR
Samcos/ProVent
SunCoast/Transgo
Carter Intank-pmp
2mic.Sec.Fuel Filter
Flowmaster/NO CAT
V6Airbox/noVH
GM11 Bld.fan/HDClutch
IronrockArms/wwdieselMount

98 Dodge Cummins 24 Valve


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