Can a CIS-E be adjusted in an intake manifold?
Since adjusting the mixture can be done with the air cleaner assembly mounted to the top of the intake manifold, folks often think that it is the panacea and solution to all their problems. And indeed, it can be useful, but it is a direct mechanical adjustment to the CIS-E arm below it in the intake plenum.
Where is the adjuster screw on a Mercedes?
In order to reach the adjusting screw one must first remove the anti-tamper device required on US cars by Federal law. It is in a cast-aluminum tower just in front of the fuel distributor. Although Mercedes requires that it be removed and discarded, and after the adjustments be replaced by a new one, with care it can be re-used.
Where is the EHA adjustment screw on a Mercedes?
The adjustment screw isn’t visible with the EHA on the fuel dist. Once you undo the electrical connector and remove the two screws holding the EHA to the dist (watch for the fuel spritz) you can pull it off. Make sure the two O-rings that seal the EHA to the dist aren’t lost.
How does the idle speed of a Mercedes Benz work?
* The nominal idle speed is controlled depending on temperature, between 1200 RPM at about -23°F (-30°C) to 900 RPM at 158°F (70°C). * With the ignition switched on (engine not running) the idle speed air valve is activated by a specific voltage.
Since adjusting the mixture can be done with the air cleaner assembly mounted to the top of the intake manifold, folks often think that it is the panacea and solution to all their problems. And indeed, it can be useful, but it is a direct mechanical adjustment to the CIS-E arm below it in the intake plenum.
In order to reach the adjusting screw one must first remove the anti-tamper device required on US cars by Federal law. It is in a cast-aluminum tower just in front of the fuel distributor. Although Mercedes requires that it be removed and discarded, and after the adjustments be replaced by a new one, with care it can be re-used.
How does the EZL electronic breakerless ignition system work?
The EZL electronic breakerless ignition system has computer controlled electronic ignition timing (firing point) adjustment. Data about ignition characteristics for various engine loads is stored in the ignition control module and can be recalled according to actual engine operating conditions.