1993 Mitsubishi Diamante Basic Diagnostic Procedures

Posted on 27 December 2013 by admin

Download 1993 Mitsubishi Diamante Basic Diagnostic Procedures – VISUAL INSPECTION Visually inspect all electrical wiring, looking for chafed, stretched, cut or pinched wiring. Ensure electrical connectors fit tightly and are not corroded. Ensure vacuum hoses are properly routed and are not pinched or cut. See M – VACUUM DIAGRAMS article in this section to verify routing and connections (if necessary). Inspect air induction system for possible vacuum leaks. MECHANICAL INSPECTION Compression Check engine mechanical condition with a compression gauge, vacuum gauge, or an engine analyzer. See engine analyzer manual for specific instructions. WARNING: DO NOT use ignition switch during compression tests on fuel injected vehicles. Use a remote starter to crank engine. Fuel injectors on many models are triggered by ignition switch during cranking mode, which can create a fire hazard or contaminate the engine’s oiling system. Exhaust System Backpressure. Exhaust system can be checked with a vacuum or pressure gauge. Remove O2 sensor or air injection check valve (if equipped). Connect a 0-5 psi gauge and run engine at 2500 RPM.

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