Thread: 3.6 TDI V8 engine overheated best option rebuild or (try) to find replacement engine

Very common for EGR coolers to fail.
You should be able to remove coolant hoses from the coolers and bypass to test if problem still exists.
I have also connected a regulator and tap to the coolant side and pressure tested in situ.
Mark

Removing the plenum gives you reasonable access to further back in the top of the engine. Removal is not too big a job and you can push AC hoses aside.

I’m fairly sure the EGR cooler should be accessible.

Originally Posted by eddy

If you are exceptionally lucky you may have a DIY workshop with hoist close by!

Haha, don't think luck and I go together very well...
I have seen those workshops but certainly don't have one within 4-5 hours drive.

Originally Posted by haydent

Attachment 182321

Attachment 182322

for reference, here's the egr coolers. i would expect if one was cracked and leaking coolant into the exhaust intake an inspection of the inside could show evidence similar to how a spark plug in a cylinder with a blown head gasket will be steam cleaned.

one could likely also pressure test the coolant/water jacket

Great, thanks for this. Where did this diagram come from? I will be looking for a workshop manual with torque specs etc, any suggestions?
Cheers

Originally Posted by big harold

Very common for EGR coolers to fail.
You should be able to remove coolant hoses from the coolers and bypass to test if problem still exists.
I have also connected a regulator and tap to the coolant side and pressure tested in situ.
Mark

Hi

Right, thank for this, if the coolers are faulty, is there an issues with just bypassing the coolers and delete the EGR system?

RRS Handbooks and Workshop Manuals

i use the Range Rover Sport2005-2009.pdf one mostly

bypass should be fine, you can get a egr delete patch from bell auto service, thats what i have only.

Originally Posted by justinthorpe

Hi

Right, thank for this, if the coolers are faulty, is there an issues with just bypassing the coolers and delete the EGR system?

BigJon did this on his L322 years ago.

Originally Posted by rar110

Removing the plenum gives you reasonable access to further back in the top of the engine. Removal is not too big a job and you can push AC hoses aside.

I’m fairly sure the EGR cooler should be accessible.

The first part of Mick’s post shows how to remove the plenum on a L322.

3.6L TDV8 Intake / Valve Cover Gasket
3.6L TDV8 Intake / Valve Cover Gasket