Question about 1999 Chevrolet Blazer

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Leaking coolant My blazer is leaking coolant from what looks like an engine seal and I cannot find the leak and no one else can either but it's leaking can you help me find a diagram that I can follow

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Hello There

The leak is from the water pump. I'm afraid the only solution is a new water pump.

Hope this helps and please don't forget to rate me.

Thanks

Posted on Mar 11, 2009

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Replace intake manifold gasket; 4.3L V-6


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My 1999 blazer is leaking antifreeze. can't really tell from where but it does not always leak. most of the time it is over the weekend when I am not driving it.


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I have a1998 chev. blazer. It had started running rough so I checked the oil and it was a milky colour . what is causes this?


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Ok i have a major antifreeze leak,looks like is pooring from underneith motor and cannot find the leak...truck hasnt heatet up at all just parked it and there was white smoke witch looked like it was...


You didn't mention how many miles are on the vehicle but your symptom points to a water pump with failed seals. They don't often fail at less than 100K but they can.

There is a small hole at the bottom of the pump housing that allows coolant to leak out if the seals fail to prevent the coolant from ending up inside the engine and damaging it.

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I had the same problem and could not exactly pin point the leak until I took a real close look at the pump when everything was dry. I could see that the small weep hole was leaking which meant that the pump had to be replaced.
ruling out that there is a crack in the pump itself, it is more than likely to be a hose or its connection to the pump, the pump seal to the engine block or the weep hole on the bottom of the pump housing.

If you are to change out the pump yourself, you need remove several parts off the front of the engine so if you are not too confident, I would suggest paying someone to do the job.

Hope this helps

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1 Answer

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