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Originally Posted by the great one
it will need a new egr valve
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Why is the egr valve giving this symptom?
I should add that I'm not disagreeing with your comment as there are well documented know issues on E4 engines having problems with them. My suspicions were with it, but as I am not a Volvo or Ford technician I didn't want to offer something that I couldn't fully justify.
I'm just curious to know what the egr valve does, how it does it and why if it fails you get blue smoke.
Regards