If you pour it into the top of thebig hose that comes of the water pump,
you should see it come out the drains in the block. The 2 smaller hoses
go to the exhaust manifolds, and you should see it coming out of those
drain plugs too. The last plug should be on the bottom of your oil
cooler. There is a 4th line on the stat housing that runs to that. It
should be about the same size or a bit bigger than the hoses going to the
exhaust. You should see antifreeze coming from the bottom of that cooler
too. When you removed these plugs, you should have gotten water from all
of them. If you didn't, take a coat hanger and fish around in the hole
till water or antifreeze comes out. Then replace all the plugs, and fill
up everything.


"werlax" wrote in message
m...
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!