Hi All,
I'm trying to bleed the coolant system.
Is there just the two places to bleed?
The Radiator & the Thermostat housing?
I see in the manual that the system should be drained
just below the heads? Is this on the block?
Mostly though, What's the trick with the bleeder on the thermostat  housing?
I can turn it counter clockwise about three turns,
but nothing comes out?
Not coolant, not air?
Does it also need to be pressed?
Need a heads up on this one fer sure !
Thanks,
John C...