FUEL INJECTOR LEAK AT OUTSIDE BASE

[boatsailor64]

YANMAR 3GMF JUST DEVELOPED LEAK/BLOW-BY AT BASE OF CENTER INJECTOR ( 3)ENGINE RUNS BUT NOT THAT CYL
ANY HELP ? VALVE SEALS ?

[sailmaster]

Remove the injector and replace the injector seal. It is usually copper and sometimes other material. Make sure you anneal the copper before installing it and torque the injector properly.