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Asked by Chevygirl_79 Mar 14, 2017 at 10:40 AM about the 2000 Chevrolet Blazer LS 4-Door 4WD

Question type: Maintenance & Repair

I have a 2000 blazer and antifreeze pours
out. Radiator is bran new. Any thoughts?
Someone told me to check the thermos stat
housing

4 Answers
188,355

Paul answered 7 years ago

POURS OUT OF WHERE ? IF ITS COMING OUT OF THE RADIATOR CAP THEN IT COULD THE THERMOSTAT OR THE CAP ITSELF. A BAD PUMP WILL ALSO OVER PRESSURIZE THE SYSTEM...

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Chevygirl_79 answered 7 years ago

It pouring out the front some where can't see where. Happened when I was driving it. First time it did that

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101,515

KenF answered 7 years ago

You'll just have to observe running engine until you find the leak. Check water pump gasket, all hose fittings, the upper radiator hose connects to the thermostat housing which is bolted to the engine, check your heater hoses as well, as well as check degas/overflow bottle and hose that attaches to radiator neck by cap. There are areas on the block that can also leak coolant - freeze plugs and the intake and head gaskets. A bad freeze plug can lose coolant pretty quick. A word of caution, if you can't find your leak, DO NOT drive with engine overheating, that can kill it pretty quick.

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220,815

Rowefast answered 7 years ago

Sounds like it is leaking from the water pump weep hole. Probably a bad water pump.

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