I have a pair of OM636 engines in my sailboat and I just noticed the overflow tube on the injector is leaking. I am hoping it's a quick fix. Yes, hoping. It runs really good, but it seems to take a while starting. I am new to this diesel maintenance so any help would be greatly appreciated. Even just a link to a service manual (not just blow up pictures and a list of parts - but a good service manual please)

Why would it be leaking and how would I fix it?

Thanks - I'm sure this won't be the last time you hear from me ;-)

John
S/V Stone Age