I have replaced the front main
oil seal on my
Yanmar 3JH 2CE
engine twice because there was
oil slinging all over the
engine compartment in line with crankshaft pulley.
I finally got someone small enough to crawl over the engine to get a good look at where the leak was, and discovered a small hole just to the left of the crank pulley in the
gear case. Maybe slightly smaller than a pencil eraser
head. I took a look at the other engine and no such hole. Anybody ever hear of this problem before or have experience with it? Since I only have a hole in the one engine, I am assuming that it is not some kind of breather hole....
Thanks