Cylinder 6 steam cleaned
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7th Gear
Joined: Dec 2014
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From: Youngsville, NC
Cylinder 6 steam cleaned
2000 Disc 2 with 100k miles.
To make a long story short, the truck overheated and I have ended up doing a head gasket job. I got the heads off today; there were no obvious gasket failures and no. 6 is steam cleaned, which doesn't sound too good for the home team...likely a cracked block/slipped liner from what I'm reading here.
So what's the consensus? What are my next steps? Do I bother even getting the heads checked or do I zip it back up and try my luck with some mechanic in a can? Thanks in advance for the help.
To make a long story short, the truck overheated and I have ended up doing a head gasket job. I got the heads off today; there were no obvious gasket failures and no. 6 is steam cleaned, which doesn't sound too good for the home team...likely a cracked block/slipped liner from what I'm reading here.
So what's the consensus? What are my next steps? Do I bother even getting the heads checked or do I zip it back up and try my luck with some mechanic in a can? Thanks in advance for the help.
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7th Gear
Joined: Dec 2014
Posts: 7
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From: Youngsville, NC
Thanks for the replies. I was in a little shock when I made the first post in the thread. I've calmed down a little now. 
There wasn't any damage to the head gaskets - they looked virtually new. The P.O. actually had them changed at 40k miles under warranty; it doesn't appear that the heads were machined at that time.
I'll also add that although the truck sat for 2 weeks before I dug into removing the heads, the cooling system was significantly pressurized when I started to work. Considering this and the steam cleaned cylinder, it really makes me think there's a crack that opens up as the block heats up and then as it cools, the crack seals back up and holds that pressure in.
Im not sure I've even evaluated all my options here. Man, if I had a crystal ball, it sure would be easier to decide what to do.
There wasn't any damage to the head gaskets - they looked virtually new. The P.O. actually had them changed at 40k miles under warranty; it doesn't appear that the heads were machined at that time.
I'll also add that although the truck sat for 2 weeks before I dug into removing the heads, the cooling system was significantly pressurized when I started to work. Considering this and the steam cleaned cylinder, it really makes me think there's a crack that opens up as the block heats up and then as it cools, the crack seals back up and holds that pressure in.
Im not sure I've even evaluated all my options here. Man, if I had a crystal ball, it sure would be easier to decide what to do.
Last edited by WaldoWilburforce; Jun 2, 2015 at 11:08 PM.
Baja
Joined: Feb 2011
Posts: 9,298
Likes: 318
From: Boston Strong
a very common problem with this engine is cracks inside the head bolt holes; after head gasket replacement.
mostly cause by improper installment of the new head gaskets (hydro-lock or improper torquing procedures).
So yes; when hot and under pressure they leak from the actual bolt holes or the coolant comes up between the liner and the block.
mostly cause by improper installment of the new head gaskets (hydro-lock or improper torquing procedures).
So yes; when hot and under pressure they leak from the actual bolt holes or the coolant comes up between the liner and the block.
Last edited by drowssap; Jun 3, 2015 at 07:22 AM.
Recovery Vehicle
Joined: Jun 2012
Posts: 1,080
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From: Queens, NYC
a very common problem with this engine is cracks inside the head bolt holes; after head gasket replacement.
mostly cause by improper installment of the new head gaskets (hydro-lock or improper torquing procedures).
So yes; when hot and under pressure they leak from the actual bolt holes or the coolant comes up between the liner and the block.
mostly cause by improper installment of the new head gaskets (hydro-lock or improper torquing procedures).
So yes; when hot and under pressure they leak from the actual bolt holes or the coolant comes up between the liner and the block.
****.
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