how to disconnect the ludicrous and unecessary E.G.R system on the HDi 110 engine in my Xsara wagon.
Since this- not very large- car seems to need to weigh as much as some Granadas it needs all the help it can get.
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Robin, I am not conversant with this engine but, somewhere around the inlet manifold there will be a vacuum or electrically operated valve which allows the EG re-circulation at the lower revs. Others, no doubt, can comment on any problems in dis-connecting this device but, if you do it, it's as well to have the manifold off because it will be well sooted up and a good clean should enhance the air flow.
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I've found the valve,how do disable it though?
If you could see the installation in question you would rather adjust the tappets on the QE2 than take the manifold off!
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