3.0 Volvo Water hose builds pressure and blows off

h2o-oo

Recruit
Joined
Jun 23, 2006
Messages
5
Replace water circulator pump last fall, winterized it, this spring changed oil appears water was in oil, changed oil then went out on the lake for a few hours then circulator pump started leaking at weep hole alot. Loss of power, Just installed new pump and new impellor pump,and now when I raise the rpm's it blows ( you can see the hose building pressure) the circulator pump off and throws water out. Checked level of oil prior to and after level stayed the same. Plugs were checked and did not notice any water. Any thoughts on what the problem might be?
 

Reel Poor

Vice Admiral
Joined
Jan 29, 2005
Messages
5,522
Re: 3.0 Volvo Water hose builds pressure and blows off

Is this a raw water cooled or closed cooling system?
 

h2o-oo

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Jun 23, 2006
Messages
5
Re: 3.0 Volvo Water hose builds pressure and blows off

Raw water cooled.
 

Bondo

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Apr 17, 2002
Messages
70,525
Re: 3.0 Volvo Water hose builds pressure and blows off

I'd say you're moving enough water Into the system,.......

It Sounds like the water can't get Out,......... Clogged Riser maybe,..???.....
 

h2o-oo

Recruit
Joined
Jun 23, 2006
Messages
5
Re: 3.0 Volvo Water hose builds pressure and blows off

It was a blocked thermostat.
 
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