If it makes serious smoke under hard acceleration, the EGR is stuck open. Or at least not closing properly. Had this issue on the Volvo TD, very serious smoke. Plated off the EGR on that one, it really only needed the actuator rod cleaned so it closed properly (and all the goop cleaned out from using dino oil in it).
In your case you will have to fix it, which is probably why the car went for cheap..... It will run better when it's working -- unlike gasoline cars, max EGR is just above idle and drops as the fuel comes on. If it doesn't close under acceleration, you don't have enough oxygen for the fuel going in and it smokes badly. Wide open at idle doesn't have much effect as you aren't putting very much fuel in. _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
