C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

96 LT4 coolant leak

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Old Sep 6, 2009 | 02:36 PM
  #1  
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Default 96 LT4 coolant leak

Seems to be coming from right around the pulleys and leaking down over the spring/crossmember - though I could not trace the exact source. I parked the car and 10 minutes later I have a puddle. No coolant/wetness around the upper or lower hoses or Tstat, which are all new in 07. Nothing around the radiator or overflow either.

Water Pump is original and that is my suspect - just want to be sure before I start tearing stuff up. Car runs fine otherwise and is still holing normal water temp. Opti is original too and like I said - running fine.

Thoughts from the crowd?
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Old Sep 6, 2009 | 03:03 PM
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Sounds like the bearing is going bad and you're loosing coolant from the weep hole. Time for a new water pump.
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Old Sep 6, 2009 | 03:16 PM
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Wrap the suspects with toilet paper and run the car briefly.
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Old Sep 6, 2009 | 06:59 PM
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A quick test is go to an auto parts store, have them put a radiator cap tester on and put 15 lbs in and see where it leaks from.
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Old Sep 6, 2009 | 09:14 PM
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Originally Posted by gsdave
Sounds like the bearing is going bad and you're loosing coolant from the weep hole. Time for a new water pump.
Check the weep hole, I bet it's wet.
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Old Sep 6, 2009 | 09:47 PM
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Originally Posted by STL94LT1
Check the weep hole, I bet it's wet.
A 3rd vote.
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Old Sep 6, 2009 | 10:03 PM
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Replace it if it's the pump before you have to replace your opti
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