SUZUKI INJECTOR 15710-87J00

Function and technical context

This injector is part of the fuel supply system in direct injection outboard engines, being responsible for spraying the fuel precisely into the combustion chamber to guarantee an optimal air-fuel mixture. Its correct operation is decisive for the energy efficiency of the engine, since poor dosage has a direct impact on the performance, consumption and emissions of the propellant. A damaged injector can cause difficult starts, irregular idling, loss of power at full throttle and, in severe cases, damage to internal engine components due to incomplete combustion. Reference 15710-87J00 is the catalog number for Suzuki DF40 and DF50 engines of the series produced between 1999 and 2013.

When to replace this part?

The most common symptoms of a bad injector are: unstable idle or engine cuts, black or white smoke in the exhaust, increased fuel consumption without apparent cause, and difficulty reaching maximum rpm. It is recommended to inspect and, if necessary, clean or replace the injectors every 300-500 hours of operation or when any of the above symptoms appear, since the deposit of debris and wear of the spray hole progressively degrades their performance. Acting preventively before each nautical season prevents navigation breakdowns and prolongs the useful life of the injection system as a whole.