Hi
I disconnected the wires going to the solenoid on the EGR valve. Well, for now, (took it for a 20km run on the highway) there wasn't any problems. Also took it to redline, no smoke at all, but it kind of lost some of it's power from 3000-. Not noticeable for a co-driver, but I did feel it. Is this normal?
Did some more research on this type of valve (electrical), and found that at cruise speeds, it sort of open and close rapidly (pulsates). That could explain "smoke/no smoke/smoke" behaviour when I was driving in 5th gear. But then again, I maybe wrong big time.
I decided to leave it disconnected for a few days and just see what happens. And I think that engine sounds a bit different, not sure.
Sven, when did you block your valve? You did not have any side-effects?
Please don't get me wrong, but "Don't disable EGR valve, it will ruin your engine" is just similar to using very odd bits (kind of 5-way torex with a hole) to screw the MAF sensor in. Why use those? Because you are not to clean it and save 200 EUR, that's why. I can't remember of any other reason. But again, I maybe wrong.
So, if black smoke doesn't appear again in a few days, I'll try to clean the damn thing (altough garage already cleaned it).