failed emission test,clucth does not appear to be working
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1992 Mercedes-Benz 400SE Question: how to test or check smog pump (air injection pump)?
Answer #1Auburn Foreign & Domestic (194 Answers) , Auburn, WA - (253) 259-3676Greg-Julia October 13, 2010, 19:30Journeyman
Pump should have power when 1st started cold. If not check for faulty relay or damaged wires. Mercedes has had issues with the insulation falling off the wiring. Good luck!