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I have a coolant leak behind crank pulley area?

Tiny
KILO36
  • MEMBER
  • 1993 BUICK PARK AVENUE
  • 3.8L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 231,000 MILES
I have a coolant leak behind crank pulley area that only leaks when there is coolant in reservoir. The radiator stays full and the leak stops when the reservoir empties. Car has been parked for 3 days leak was constant until reservoir was empty and started when I put water in reservoir. Could this be water pump
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Friday, January 30th, 2015 AT 1:02 AM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
I would pressure check system here is a guide to help you

https://www.2carpros.com/articles/radiator-pressure-test

Let us know what you find.
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Friday, January 30th, 2015 AT 6:31 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
If it only leaks when the coolant reservoir has coolant in it I would check the hose between the coolant reservoir and radiator or it could be the reservoir itself, here is how to change it out if you find the reservoir leaking.

https://www.2carpros.com/articles/coolant-reservoir-replacement

Let us know what you find.
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Tuesday, August 13th, 2024 AT 2:02 PM

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