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Cracked head

Tiny
SHELTONSPAIN
  • MEMBER
  • 1998 JEEP CHEROKEE
  • 4.0L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 200,040 MILES
I have the vehicle listed above Sport model. It has a cracked head, thinking it was the head gasket. I pulled the head, and realized it was 3 cracks in the head itself. My question is, I have been told that blue devil sealant will pretty much fix a cracked head. Is this true? Would you recommend going about it this way?
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Tuesday, October 29th, 2019 AT 3:13 PM

1 Reply

Tiny
STEVE W.
  • MECHANIC
  • 13,452 POSTS
Welcome to 2CarPros. As you have the head off I would just get a replacement. The mechanic in a can can work in some very specific instances, but I wouldn't trust it if I had the engine apart, especially when they are a very common engine like the 4.0. The other issue with many of the sealers like these are that they plug the heater core and radiator.
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Tuesday, October 29th, 2019 AT 4:00 PM

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