I've successfully bled my 2GM fuel
system many times in the past as described in the Yanmar
manual. So I was mystified this time when despite bleeding fuel
from the top of the filter, I could not get it at the injector pipes. The prospect of an injector pump overhaul
was really starting to spoil my day, but then I spied a bleed screw I hadn't noticed before, and which the manual does not mention. It's where the pipe from the filter outlet connects to the top of the injector pump
housing. After bleeding it I got fuel from the injector pipes, and then hey presto she fired up a treat.
I guess the pro's know about this, but for your average mug like me, it could have been a wasted couple of hundred bucks for a mechanic
to show me, or even worse a needless pump rebuild