The school of diesel knocks: diesel engines 101
I recently had a persistent fuel leak that took me ages to debug. It prompted me to write up some basics on marine diesel engines, which I've learned from the "school of diesel knocks."
Full write-up with photos:
blog.arribasail.com/2014/06/tech-boat-maintenance-diesel-engine-and-fuel-system.html 
Artwork by
velanoble.com/
