Question about 1983 Mercedes-Benz 300-Class
The fuel cut-off is a vacuum cut off which is mounted on the rear of the fuel injector. it has a brown vacuum hose attached to it. To check it after it is out you push the plunger in while holding your finger tightly on the vac port to see if it holds pressure. The replacement part is a "BOSCH" #1427133091 for around $100. Many times the failure of the cut-off is not the switch but is in the vacuum system. you can check this by attaching the brown vac hose directly to the vac system at the yellow round check valve right above the cut-off switch.The HAYNES manual #63012 will explaine the systems I described very well.
Posted on Sep 03, 2010
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Posted on Jan 02, 2017
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