Engine leaks

1992 CHEVROLET S-10
170,000 MILES • 6 CYL • 4WD • AUTOMATIC
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CHARLESVOSHALL1990
  • MEMBER
  • 1 POST
What might be leaking out from below my water pump. I have a chevy blazer v6 4.3L 4x4 1992. I recently replaced the water pump, thermostat, and heater core. IT leaks below the water pump.
Jan 2, 2011 at 8:16 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Below and on the water pump is a weep hole. If the seal or bearing is bad on the pump, it will leak from there. However, if this is the same problem you had before the new pump, check around the intake manifold for leaks. There really isn't anything there that would leak other than a bad pump, leaking gasket, heater hose...

I recommend pressure testing the system. Most parts stores will lend you the pump. Just screw it on where the radiator cap is located (make sure the engine is cold) and it is a hand pump. Pump it up to the pressure listed on the radiator cap and then you can take your time looking with a mirror for leaks.
Mar 11, 2011 at 9:08 PM
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