Visual Inspection
WARNING: This page does not describe the selected car, but rather 19 other vehicles, including the 1992 Mercedes-Benz 500E, 1992 Mercedes-Benz 400E, 1992 Mercedes-Benz 300TE, 1992 Mercedes-Benz 300E, and 1992 Mercedes-Benz 300D. However, it is still accessible from the selected car via links, so may be relevant.
- Visually inspect all electrical wiring, looking for chafed, stretched, cut or pinched wiring. Ensure electrical connectors fit tightly and are not corroded. Check for loose or defective electrical connections on starter motor. Ensure all vacuum hoses are properly routed and are not pinched or cut. See appropriate VACUUM DIAGRAMS article in the ENGINE PERFORMANCE section to verify routing and connections (if necessary). Inspect air induction system for possible vacuum leaks.
- Check for binding throttle linkage or defective throttle return spring. Check air filter for restriction or damage. Ensure turbo and intercooler (if equipped) inlet and outlet ducts clamps are tight. Ensure glow plug electrical connectors are tight.