Great idea, and you are doing it right, but you are in the wrong place working on the wrong car.

You have read and are doing well monitoring the lambda control system for adjusting mixture. If there is no lambda system it is real hard to monitor it.

There will be no electronic means to adjust mixture on non feedback systems.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician