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93 Mercury 150 water will not circulate, just replaced water pump and still having problem

Water will not circulate through motor but if I put air hose to it the air will flow out. Just replaced water pump and still have the problem.

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  • DANIMAL
    DANIMAL Dec 01, 2013

    Why would you introduce compressed air to the system... that's a NO NO. Find the highest point in the system, usually where the return line to the overflow tank exits the motor, and carefully disconnect at this point to purge any air. Sometimes it is necessary to lift the vehicle at different angles to help move the air in the system to this high point.

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  • Cars & Trucks Master
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Check the hoses to be sure that they have not seperated internally

Posted on Nov 27, 2012

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