Congratulations for solving your problem. i have been following your post as i am having the exact same problem, except my car is e220. i rushed to my mechanic this morning with the good news that it is THE OVP, but he smiled back and said that e220 dont have OVP any one can help??jeff.egan said:just to let you all know,all those who gave advise ..my merc c280 elegance straight 6 now starts first time ,every time..IT WAS THE O.V.P