Did I miss any water drains? 4.3L

[sky7]

Morning guys

1990 4.3 V6, A1/gen1 (OC773149, OD301161)

2 drains on the sides of the block, 2 riser drains on the top/sides(1 each side), and 4 lower/ bottom side exhaust manifold drains (2 each side), all with the rust-poke method. I disconnected all the coolant hoses at the water pump and tstat housing and blew them out with a shop vac blower or compressed air. I also lowered the drive.

Did I miss any water drains? Should I pop the 2 square drive plugs at the water pump? (are those the automotive heater hose send and return?) I'm a little gun shy because I completely forgot to drain a heater in a friends boat last winter....so I got to install a heater last spring.

Thanks guys, your help is always appreciated.

 

[81 Checkmate]

I wouldn't mess with the sq plugs......most-likely crack the plug. The only other thing would be the power steering cooler?

 

[Bondo]

Morning guys

1990 4.3 V6, A1/gen1 (OC773149, OD301161)

2 drains on the sides of the block, 2 riser drains on the top/sides(1 each side), and 4 lower/ bottom side exhaust manifold drains (2 each side), all with the rust-poke method. I disconnected all the coolant hoses at the water pump and tstat housing and blew them out with a shop vac blower or compressed air. I also lowered the drive.

Did I miss any water drains? Should I pop the 2 square drive plugs at the water pump? (are those the automotive heater hose send and return?) I'm a little gun shy because I completely forgot to drain a heater in a friends boat last winter....so I got to install a heater last spring.

Thanks guys, your help is always appreciated.

Nope,.... No need to pull those plugs outa the circulatin' water pump,...

They're for the Return lines for a water heater, or cabin heater,....

Ya gotta pull the Hot water feed from behind the t-stat, in the intake manifold,....

What ya Should do is pull the Big hose off the circulatin' pump,...
It'll drain the pump, which can hide 'bout a quart of water,...

'n as Checkmate says, don't forget the P/S cooler,it's probably down under the port-side motor mount,....

 

[sky7]

Thanks guys, I had forgotten about the ps cooler. I just pulled it and and got a couple cups of water.

Just had the boat out a couple days ago for a beautiful day on lake washington. So sad to see her go to bed for the winter.

Thanks again guys