rust on ficht Injector

[Snooter007]

so I have a 2002 225 HO Ficht that has rust on the 90 degree brackets on the Ficht Injector that connect the Injector to the cylinder head. the rust starts on the bottom of Injector 2 and progressively gets worse down to cylinder 6. so my question is so what could be causing rust, how should I fix it, and should worry about anything

[Bighare2]

The material prone to rusting. And of course rust is caused by moisture.