Thanks for your reply. I will remove the valve cover and spark plugs this coming saturday and set the engine to TDC in order to check the cam and crank marks. I think this would be the most accurate method. I went by three automotive part stores to get a timing light with a dial and non had one. I got tired of driving after leaving work. I had to use the one I have w/o dial. I will go by Sears on Friday to get one. I will do your suggested method to check the EGR. Thanks again and I will post results as soon as I have it.
1993 190E 2.6
Advanced Diesel Systems Test and Research Engineer