This workshop service repair manual provides comprehensive information for Mercury Mercruiser 5.0L MPI Engines. These V8 engines, featuring Multi-Point Fuel Injection (MPI) and electronic ignition, offer robust performance for various marine applications, with displacements of 5.0 liters. While specific production years are not detailed, this manual covers multiple model years, ensuring its utility for a broad range of these reliable powerplants. The engineering quality and dependability of Mercury Mercruiser engines are well-established, and this manual is designed to help owners and technicians maintain that standard. The purpose of this English-language manual is to serve as an authoritative guide for the maintenance, repair, and troubleshooting of the Mercury Mercruiser 5.0L MPI Engines. It covers essential areas including detailed maintenance procedures for fluids and cooling systems, ignition system specifics, and electrical system components. Furthermore, it provides in-depth diagnostic information, including MPI-specific diagnostic trouble codes, and addresses common issues related to fuel, ignition, and starting problems. This resource is invaluable for ensuring optimal performance, longevity, and safe operation of your Mercury Mercruiser engine.