73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: plik on January 05, 2017, 01:25:27 PM
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I got a new water pump (AC Delco), and there is a small hole at the top and a small hole at the bottom.
Should these be plugged?
(http://paceperformance.com/images/F20045381.gif)
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No, those are weep holes. they are supposed to be there. Don't plug them.
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Seals are going bad when you see em' dribbling water/anti freeze, better get the pump replaced soon.
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Here is a side-by-side. As you can see, coolant was coming out of the weep hole of the old one.
(http://www.sokiveta.com/ton/waterpump-1.jpg)
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that's exactly why they are there.
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(https://www.flowkoolerwaterpumps.com/wp-content/uploads/2011/04/Bearing-Failures.jpg)