Question about Mercedes-Benz S-Class
Component S87 4y1 (servo turnoff solenoid valve) fault. discontinuity or door tightening assistance is not fitted in this vehicle
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COMPONENT TESTING Carefully check for cracks or leaks in the vacuum lines or in the canister itself. The lines and fittings can be reached without removing the canister. Cracks or leaks in the system may cause poor idle, stalling, poor driveability, fuel loss or a fuel vapor odor.
Vapor odor and fuel loss may also be caused by: fuel leaking from the lines, tank or injectors, loose, disconnected or kinked lines, or an improperly seated air cleaner and gasket.
If the system passes the visual inspection and a problem is still suspected, proceed as follows:
REMOVAL & INSTALLATION
Canister Purge Solenoid Valve
See Figure 2
The purge solenoid valve is mounted on the engine, towards the rear and below the intake manifold.
Fig. Fig. 2: The canister purge solenoid is mounted below the intake manifold
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