Question about 1989 Mercedes-Benz Mercedes Benz S Class
Vacuum is only used to open the choke. To close, assuming it is an automatic choke, there is a thermal spring coil. There is usually an adjustment that consists of loosening the fasteners on the round spring housing and turning. It should have marks for different settings, but these are not exact. Adjust in the morning by loosening the screws, opening the throttle with one hand, and rotating the spring housing until the choke is just closed. Tighten the screws. Make sure to check the engine after it warms up to see if the choke is opening properly. There may also be a fast idle setting that uses a cam to increase the idle when tne choke is closed.
Posted on Aug 04, 2017
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Posted on Jan 02, 2017
The fuel pump is bad you will need new. You may be able to obtain an in line check valve and install in fuel line between pump and carb so gas can';t drain back when sits.
Posted on May 09, 2010
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