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Antifreeze leak?

Tiny
TERRYK500
  • MEMBER
  • 1994 CHEVROLET S-10
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 11,000 MILES
I have 1994 Chevy S-10 v-6 4.3L (vin Z). There has been a chronic anitfreeze leak not coming from hoses, heater hoses, radiator, thermostat, manifold, freeze plugs, and all the usual places. It actually appears to come from the block where it rests on the driver side engine mount. Could the block crack there? Also can anyone recommend a reliable "stop leak" product that won't clog radiator or heater core. It's more of a nusiance than anything. Thanks.
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Wednesday, December 31st, 2008 AT 2:05 PM

4 Replies

Tiny
BUDDYCRAIGG
  • MECHANIC
  • 2,262 POSTS
There is a freeze plug in the block, right where the mount bracket bolts to the block.
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Saturday, October 3rd, 2020 AT 11:17 AM
Tiny
TERRYK500
  • MEMBER
  • 8 POSTS
You got to be kidding--I would never have guessed it. Getting to it could be a problem however, but I'll look at it soon. Thanks for getting back to me so fast.
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Saturday, October 3rd, 2020 AT 11:17 AM
Tiny
BUDDYCRAIGG
  • MECHANIC
  • 2,262 POSTS
I found a pic of one on ebay.

You can see the brass freeze plug centered between the 3 bracket mounting bolts holes.
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Saturday, October 3rd, 2020 AT 11:17 AM
Tiny
TERRYK500
  • MEMBER
  • 8 POSTS
As soon as it thaws a littel around here I'll look for that freeze plug as shown in the photo you sent. Thanks for taking the time.
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Saturday, October 3rd, 2020 AT 11:17 AM

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