1991 Mitsubishi Eclipse Engine Overhaul Procedure

ENGINE IDENTIFICATION Vehicle Identification Number (VIN) is stamped on a metal plate located at upper left corner of instrument panel, near windshield. The eighth character of VIN identifies engine and tenth character (M) identifies model year (1991). Engine model code and serial number are stamped on right side of cylinder block, near front. For specific location, see the A - ENGINE/VIN ID article in ENGINE PERFORMANCE.
ADJUSTMENTS VALVE CLEARANCE ADJUSTMENT
Hydraulic lash adjusters are used. Valve adjustment is not required.
REMOVAL & INSTALLATION
NOTE: For reassembly reference, label all electrical connectors, vacuum hoses and fuel lines before removal. Also place mating marks on engine hood and other major assemblies before removal.
FUEL PRESSURE RELEASE
Disconnect fuel pump connector near fuel tank. Start engine, and allow it to idle until it stalls. Turn ignition off. Reconnect fuel pump connector. Disconnect negative battery cable before disconnecting fuel lines.
ENGINE
CAUTION: To prevent fire hazard, release residual pressure in fuel system before disconnecting fuel lines.
Removal 1) Release residual fuel pressure from fuel system. See FUEL PRESSURE RELEASE under REMOVAL & INSTALLATION.
2) Remove hood. Drain cooling system. Drain engine oil and transaxle oil. Remove transaxle. On M/T models, see CLUTCH article. On A/T models, see the TRANSMISSION REMOVAL & INSTALLATION - A/T article in TRANSMISSION SERVICING.
3) Remove radiator and cooling fan assembly. Disconnect all necessary electrical connectors, vacuum hoses, fuel hoses and cables. Leaving hoses connected, remove power steering pump and A/C compressor, and support aside using wire.
4) Disconnect exhaust pipe from exhaust manifold. Using suitable lifting device, support weight of engine. Remove upper engine mount bracket assembly. Raise engine slightly. Ensure all cables, hoses and electrical harnesses are disconnected from engine. Lift engine upward from engine compartment.

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