If you can post your results... there are many people here who will be able to interpret them for you.

Please post as much info as possible like the limits and results on all gases tested.

Also post any other symptoms such as change in gas mileage, rough starts, running...

__________________
-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/showpost.php?p=831799&postcount=13
http://www.peachparts.com/shopforum/showpost.php?p=831807&postcount=14