INJECTOR 8M0091784

Function and technical context

The fuel injector is an essential component of the EFI (electronic petrol injection) fuel system that sprays fuel into the combustion chamber with millimeter precision. In Mercury 4-stroke engines, these injectors work synchronously to ensure an optimal air-fuel mixture in each operating cycle. Its correct performance is critical to maintain the engine's nominal power, ensure clean starts in any temperature condition and reduce polluting emissions. A defective injector causes loss of performance, excessive petrol consumption and starting difficulties, especially in outboard engines where reliability is essential for boating safety.

When to replace this part?

Symptoms of failure include intermittent misfires, rough idling, sudden loss of acceleration, and difficulty starting when cold. It is recommended to check the condition of the injectors at each seasonal maintenance, especially if the engine has been inactive for several months or if low quality fuel has been used. The preventive replacement of the injectors avoids costly repairs and unexpected stops in navigation, guaranteeing that the injection system maintains its precision and reliability performance.

Compatible Mercury Mariner Engines

Equivalent manufacturer part numbers