Re: Cat 3128 Injector setting
there was a 3126 mechanical marine engine - basically a bored out 3116
and it was all mechanical linkage - need a dealer to do the snychronization and timing and fuel setting.. nothing DIY about it. Tools would run you about $4000 and best to get some professional hands-on training on their use.
Fly me to the Cayman Islands around December...and I'll bring the tooling.

need the serial number prefix to say for sure what version of 3126 it is