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when the boat is sitting in the water, with its normal load, is the HX cap the highest component in the cooling system (vs the hoses from the exhaust manifolds)?
if that's the case, then you will have a tough time getting all the all purged out of the cooling system....
You may want to see if you can connect a vacuum pump to the heat exchange, on the coolant side.....many years ago, I had the pleasure to replace a power steering hose on a Ford minivan....afterwards, the PS pump howled like a coyote due to trapped air....the old school approach failed to purge the air....the solution was to apply a vacuum pump to the reservoir with the engine running....I was amazed when the howl dissipated as the vacuum increased...just a thought..
If this air bleeding thing continues to be a problem, would you consider installing small 1/8" TP bleeder petcocks at these troublesome areas???
Once the cooling system has been purged of air, and when the H/E coolant recovery system is working correctly, you'd have no future issues!
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clbme,
In your first post you said "I changed out all of the closed system cooling hoses". Did you use Crusader preformed hoses or just standard by the foot hose? Some of those hoses going across the top of the engine just don't look right to me.
Erich
The steel, brass or bronze water plumbing fittings are typically rough in the ID, and are a bit restrictive.Hi Rick,
I'm curious as to why you recommend not using them normally.
The steel, brass or bronze water plumbing fittings are typically rough in the ID, and are a bit restrictive.
Whereas the Marine grade fittings are much more smooth, and less restrictive in the ID.
I think that with yours being somewhat over-sized, you'll be OK.
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