Coolant out of my exhaust manifold

Tiny
SHERIDANVFDMATT
  • MEMBER
  • 1998 GMC SIERRA
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 185,000 MILES
I have a 1998 GMC K2500 and I was working to replace my exhaust manifold with headers and pipe in a new exhaust. I removed my exhaust piping, and was about to start removing the exhaust manifold when I git a call with my fire department. As the truck was my only vehicle at the time I drove it the 10 miles to my station and then home after the call. On the way back I noticed a white smoke and it started overheating. I stopped and looked under the truck and I had coolant coming out of my drivers side exhaust manifold. I checked the oil and there was no mixing of coolant and oil. I had a friend tow me home cause I was worried to cause further damage. Whats the most likely cause of my problem and what is the ballpark price to fix it if I do the work myself? Thanks, ~Matt~
Friday, July 17th, 2015 AT 12:07 AM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Coolant out the exhaust will be either a blown head gasket or a cracked or warped head, the price to fix will depend on what has failed and how much damage has been done, this can't be know until the head is removed and checked out first.
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Friday, July 17th, 2015 AT 2:07 AM

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