Hey, thanks for the insight. I'll enlist some help next time I work on it. I'm with you on the PITA to change the cap and rotor since I recently did just that on my '90 300E. No fun. Probably the worst part was removing the fan to make room to work. I almost hope it is the cap, rotor, plugs and wires or some combination since they are no doubt due for changing anyway. It just gets a little costly for all that.
Thanx again.
Chuck.