1998 Chevy Blazer Antifreeze Leak

1998 CHEVROLET TRUCK
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NISSAN89
  • MEMBER
  • 2 POSTS
Lately my truck has been leaking antifreeze when its been sitting for couple hours. Also, usually when my truck is cold i hear a knocking sound but dont know where its coming from. All i know is that when the engine starts warming up the noise starts to fade. Anybody know a solution for any of these problems?

Hey nissan,
Sounds like a thorough inspection of the cooling system is in order. Remove the skid plate from underneath, clean the areas you see coolant and locate the leak. Some common areas on that vehicle are the water pump weep hole, bypass hoses, lower intake gaskets etc ... Let us know!

Chris
Jan 17, 2007 at 4:48 AM
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CARUNDELL
  • ✓Experienced Mechanic
  • 602 POSTS
Hey nissan,
Sounds like a thorough inspection of the cooling system is in order. Remove the skid plate from underneath, clean the areas you see coolant and locate the leak. Some common areas on that vehicle are the water pump weep hole, bypass hoses, lower intake gaskets etc ... Let us know!

Chris
Jan 17, 2007 at 4:58 AM

Suggested Repair

Inspect the cooling system thoroughly. Remove the skid plate, clean visible coolant residue, and trace the leak. Common leak points on this vehicle include the water pump weep hole, bypass hoses, and lower intake gaskets.

Conversation Summary

The owner of a 1998 Chevy Blazer reports an antifreeze leak after the truck sits for a couple of hours, along with a cold knocking noise that fades as the engine warms. An expert recommends a thorough cooling-system inspection: remove the skid plate, clean the coolant residue, and locate the leak, checking common areas such as the water pump weep hole, bypass hoses, and lower intake gaskets. The cold knock was not specifically diagnosed.

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