Cooling problem.

flech01

Petty Officer 2nd Class
Joined
May 25, 2004
Messages
173
Hello I have a 1976 115 hp johnson. It recently over heated and I replaced the water pump (not just impeller the entire pump)and it takes a little while for the water to start comeing out the pee hole. Before the overheat it took a second to start comeing out. I ran the motor in the yard for 10 min and it stayes cool. I'm pritty sure the tubes for the pump lined up right. Im trying to find out if there is some thing else I can check so I don't have to go yanking the lower unit off for no reason.<br /><br />I have taken the line off the pee hole and it is clean.<br /><br />The impeller was shreded when I went to replace it. I pulled all the hoses off the block and ran water all thru it and ran water up thru the tubes that feed the motor to clean them out. <br /><br />So I guess the question is, is it normal for it to take a while for it to start peeing? <br /><br />Sorry for the long post.<br /><br />Thanks for the help.
 

OBJ

Supreme Mariner
Joined
Dec 27, 2002
Messages
10,161
Re: Cooling problem.

You might take a look at the t-stats Bill. There a little hard to get to but parts of the old impeller could get lodged in the housing.<br /><br />If you can get to the pee hole hose connector, screw it out and check that no pieces of the impeller are stuck there. Might even kick the engine on a few seconds and flush the hole out before replacing the fitting.
 

flech01

Petty Officer 2nd Class
Joined
May 25, 2004
Messages
173
Re: Cooling problem.

Hey guys any idea where it is at. I have a manuel but its not very clear. Its shows to many diffrent engions.
 

Solittle

Fleet Admiral
Joined
Apr 28, 2002
Messages
7,518
Re: Cooling problem.

Most OMC V4 t-stats are behind a cover at the bottom of the heads. Look for a hose at the base of each head. The hoses go into the t-stat housing.
 
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