1992 Mercedes-Benz 400SE Q&A

1992 Mercedes-Benz 400SE Question: how to test or check smog pump (air injection pump)?

failed emission test,clucth does not appear to be working -
Answer 1
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! -