I have a BMW E90 2007 with a M47TU2 engine, Can anyone tell me where the EGR valve is?
How to get it off, howto clean it and what cleaning materials are required.
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BMW use valve overlap to serve EGR. Most if not all of BMW engines DO NOT have an EGR valve. They use a system on the engine that they have named VANOS. This system changes the cam shaft timing so that it allows exhaust gas to remain in the cylinder during the inlet stroke. This has the same effect as an EGR system. www.bimmerforums.co.uk has a very good and detailed explanation.
It's located between your throttle body and the manifold. You would remove the air intake and the throttle body from the manifold to best accesss the EGR and clean it.
Here is a youtube video cleaning of an EGR (exhaust gas re-circulation) valve that is a similar model to yours.
To clean the valve you will want
carb/brake cleaner to break down the carbon and unburnt hydro-carbons
small wire/nylon brush
oil picks and what not.
One can of B-12 Carb cleaner
Hope this helpful. Best of luck.
Contrary to some other answers claiming that BMW engines do not have an EGR valve, in fact the diesel engines do. Here's a link to the parts catalog showing it, and an illustration on its placement: http://bmwfans.info/parts-catalog/E90/Europe/320d-M47N2/browse/engine/pollutant_reduction_cooling/
Looks like it's on the front of the engine, between the exhaust and the inlet manifold.
As Allan mentioned, this engine does not have an EGR valve.
You might find these parts diagrams helpful: http://www.realoem.com/bmw/partgrp.do?model=VC11&mospid=48821&hg=11
if you want to delete EGR best would be to search this forum, you could find usefull info there. I hope it helps.