I have a 2003 MerCruiser 4.3L and have removed 5 drain plugs from the
engine. I was told by the dealer that I can remove the 4 hoses that
are connected above the manifold and pour antifreeze into them. He
said that I should see antifreeze come out of the drain plugs for the
block and manifolds. If I don't, then they could be plugged and to
use a flexible piece of wire to clean it out. So, having done all
this, I can't seem to get any antifreeze to appear when pouring it
down one of the hoses, and there are a couple of drain holes that
nothing is coming out of. I'm assuming that antifreeze should come
out of all the drains? I can't seem to find any pictures anywhere
(except in my manual, which is sketchy) to help clarify this. Can
someone help?
Thanks!