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Polarity of the EHA connection is imparitive. Reversing it will creat a real strange set of conditions. Disconnect the EHA and make the engine run properly with basic mixture at the 3mm adjustment.
Not sure how to tell polarity but if I suspected a problem I would reverse it. Key on engine off should be 20ma positive, but it will read 20 anyway.
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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
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