Crap antifreeze where it shouldn't be

8

87jeepster

NAXJA Forum User

Location

Texas

• Jan 10, 2006

• #1

Help...4.0 rebuilt about 1600 miles on it. Antifreeze very very slowly leaking out # 12 ehaust manifold bolt per service manuel torque sequence. The #12 exhaust manifold bolt is the one under the thermostat housing. What would cause antifreeze to come out this darn bolt???

 

H

herreraxto

NAXJA Forum User

Location

In the Jeep

• Jan 10, 2006

• #2

the seal on the thermostat housing

 

8

87jeepster

NAXJA Forum User

Location

Texas

• Jan 10, 2006

• #3

Thanks I was afraid I had a minor crack in the head there though I knew for the first 1600 miles it didn't loose any anifreeze.

 

8

87jeepster

NAXJA Forum User

Location

Texas

• Jan 11, 2006

• #4

Would the seal cause pressure to push it out this bolt? I was thinking a crack in the head maybe since I think behind this bolt is a water passage to the thermostat housing tried some thread seal which slowed it down but hasn't stopped it. Am I going in the wrong direction with the crack theroy?

 

RTicUL8

NAXJA Forum User

Location

Rocky Mountain High... Colorado!

• Jan 11, 2006

• #5

The bolt hole does not go all the way through. So IF indeed it is coming out the hole, then you have a crack. However, I believe that it is probably coming from somewhere else and just traveling down to the bolt.
Take the bolt out and seal it with a lot of hi-temp locktite. If the leaking stops, then there is a crack into the bolt hole.

 

8

87jeepster

NAXJA Forum User

Location

Texas

• Jan 12, 2006

• #6

I will try and seal it. I have been constantly watching the oil to make sure I don't have any antifreeze in it and so if the crack is somewhere in the head it must be in an area that dosen't allow it to get to my oil.