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1998 Chevrolet 3.1 water pump impeller housing leak

When obtaining a water pump for the 1998 Chevrolet 3.1 V6 engine, the only stationary part of the replacement pump is the front cover plate which along with the moving parts is bolted on to the existing impeller housing. Coolant is leaking from a pin hole in the engine side of the housing. I believe that tomorrow's inspection is likely to reveal that the pin hole is from corrosion through the housing. Have any of you been successful sealing such a leak with an adhesive? Of course it would be better to replace the housing, but that will have to wait. I am also thinking of drilling through the corrosion and plugging the hole with a clamping type fastener (such as a tight-fitting bolt with nut and washers) and some sealant. Think field repair/pit stop vs shop repair. Suggestions from those who approve will be appreciated. If you have repaired such a leak in a similar manner before, please share with me what worked for you. Thanks.

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SOURCE: intake manifold sealant repair now leaking maybe oil? coolant b4

You need to remove the thermostat housing again. Then you will have to extract the bolts you broke off. You will need to drill and tap them so you can use an easy out to remove the broken bolts from the threads. Then you can clean up both mating surfaces and replace the gasket and the thermostat. Check to make sure you did not crack the thermostat housing or you may have another leak when finished. They are usually aluminum and break easily if too much pressure is applied or they are corroded and weak.

Posted on Feb 26, 2009

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SOURCE: Water Pump leakes from steel tube.

when installing new o-ring on tube, lubricate o-ring and stick it in water pump. Then pull pressure back on tube and then tighten hold down clamp. problem solved

Posted on Oct 25, 2009

emissionwiz
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SOURCE: how to replace water pump on 1982 ford bronco 302ci

Did you apply sealer to the bolt threads?

Posted on Jun 15, 2012

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1 Answer

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