Bleeding engine

[David Knauer]

While changing changing the fuel filter in my Yanmar 3 GMD, in a sudden act of studpidity, I forgot to pump more fuel in the filter with the hand pump. As a result, I got air in the lines. I'm trying to bleed the engine. I think there are three places you bleed, 1. the fuel filter,2. the high pressure pump and 3. the injectors. Is this correct? I can't get at the high pressure pump. There is acooling water hose right in the way. The manual says to crank the engine until you get fuel out of each of the 3 lines and then shut it. Removing the hose is the only way to get to them. I can't be pumping water out to try to do this. Am I missing something?

 

[Gordon Torresen]

Bleeding

There is little that has to be bled at the high pressure pump except the little 10MM hex with the Phillips socket in it. Hopefully you can move the offendig hose far enough to loosen that screw. Then you pump your lift pump until you get solid fuel coming out of the bleeder screw. Next you loosen the nuts on the injector lines (the big ones at the bottom), move your throttle to wide open and then crank the engine until fuel comes out at the nuts. It won't be a lot of fuel, but fuel never the less. then retighten the nuts, pull the throttle back and start the engine. Not pouring fuel into the filter that you changed only means that you have to make a few more strokes on the lift pump. Not pouring that fuel in is not an act of stupidity. It makes the job much neater than trying to balance a cup filled with fuel. Also, that's the way we do it and we don't consider any of our people stupid therefor.