How old are your cap/rotor/plugs?
and How far into your next oil change are you?

I achieved a 1.5% CO reduction and a drop of 100ppm HC with an oil change and a new cap & rotor.

__________________
-Marty

1986 300E 220,000 miles+ transmission impossible
(Now waiting under a bridge in order to become one)

Reading your M103 duty cycle:
http://www.peachparts.com/shopforum/831799-post13.html
http://www.peachparts.com/shopforum/831807-post14.html