Yes clean it and all the pipes around it as well.What size engine and what year is it as there is a model with a almost sealed EGR with these you need to remove from the engine and really spend some time with knitting needles.
If its like this then they are doddle to clean
,www.ebay.de/itm/VALEO-AGR-Ventil-EGR-Abgasruckfuhr...b
Edited by Collos25 on 08/03/2013 at 20:53
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