I am loosing water from my engine, no leaks apparent, no oil emulsification, or change in oil pressure, and water pressure is still good, no bubbles or over pressure of water system etc.
I have been told it could be the oil cooler and egr cooler cause this problem.
The oil cooler is newish, but the egr cooler has never been changed.
Can I bypass the egr cooler as it will take me at least a fortnight to get one?
If so are there any problems that could be caused by doing this?

Julian

 

You can't bypass the EGR cooler without buying something like an EGR delete kit because of the coolant flow/plumbing.

 

I am still relatively new to diesels, but I do know, from my own experience, that if the Oil Cooler fails, or the EGR Cooler fails, both should be changed out. The EGR cooler is susceptible to failing or bursting caused by over heating due to a clogged oil cooler. This releases coolant into the exhaust and you very often will have what appears to be white smoke or vapor coming from your tail pipe.

A catastrophic failure, like mine results in large clouds of white vapor (White Smoke Show) and the truck must NOT be run. I followed that advice and saved my engine. Others who have not been aware and tried to continue to run the engine essentially destroyed it. That being said coolant can be lost through a failed head gasket as well, also displaying white smoke or white vapor from the tailpipe. There are many very experienced people here with more knowledge on the subject. But I would be looking at the EGR Cooler and if not that possibly head gaskets.

Go to the head of the forum and look at the tech folder as well as reading the responses from people replying. I have found the tech folder to be invaluable (as well as the responses from many knowledgable people here) and have downloaded and printed it.

If you do not have a gauge package, Scanguage, Edge insight or other way of reading diagnostic codes, look into borrowing one to check the codes displayed for your truck. The computer monitors everything but your internal body temperature! (I think!) The diagnostic code definitions are also available in the tech folder.

Eric

 

I see you have an 03,There is a updated hose for your egr/oil cooler.The orignal ones leaked,look into the valley of the motor just infront of the turbo to see if it is wet.