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post #1 of 13 (permalink) Old 11-11-2007, 08:31 PM Thread Starter
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Angry head gasket leaking

So I have been working on swapping the heads on my 95 to the 96 style heads, got everything back together and started it tonight only to find the passenger side head leaking. I know I am going to have to take everything back apart to figure out why it is leaking but am I going to need a new gasket set? I also did read after I got everything back together that you need to purchase new head bolts when you pull the heads off, could this be why? I am more than frustrated and am completely out of patients so my question is do I need to take the head back off or should I just try to take the valve cover off and try to re-tighten the head bolts? And if that doesn't work will I need to buy a new gasket set and new bolts? Any input would be fantastic because at this point I am ready to take it to the scrap yard and junk it.
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post #2 of 13 (permalink) Old 11-11-2007, 09:03 PM
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yes the headbolts can only be used once so if you reused the original than you need to take all the bolts out and use new ones, but more importantly what is leaking from the passenger side head and where is it leaking from... is it oil? coolant? is it leaking from the front? back? sides? I'm trying to help best I can because I've been there, its no easy task.

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post #3 of 13 (permalink) Old 11-11-2007, 09:08 PM Thread Starter
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Yes i did reuse the originals and its leaking coolant from the back side of the head on the bottom. I can literally watch it drip out from between the head and the block. I have not checked the oil yet i hope it not in there as well, i gave up for the night after putting in a 12 hour day working in the garage, so much for my day off. Also how much do head bolts cost?
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post #4 of 13 (permalink) Old 11-11-2007, 09:27 PM
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If it is infact leaking coolant from the back of the head to the block and not the head to the manifold than you are looking at having to do the whole job over.

Although if it is infact leaking coolant from the manifold to the head than your looking at an intake manifold gasket replacement which isn't all that uncommon and much less expensive and less time consuming, also are you sure the the intake manifold gasket is lined up properly? I've seen many of them installed incorrectly and bolted down missing that back hole on the gasket, which will skew the gasket off enough to cause it to just pour out the back of the head from right under the intake.

Also did you reuse intake manifold gaskets? Even good looking intake manfold gaskets can leak, just ask supergordo about my used felpro gaskets, they looked bran new and had about 15,000miles on them and they wound up pouring out coolant from the back of the head.

Did you reuse the headgaskets? if it is definately leaking from the head to block than you've messed up your new headgaskets and have to replace both the cylinder head gaskets and the head bolts... if that is the case just order the ford cylinder head changing kit, it runs $115 almost anywhere including the dealer and is much less expensive than ordering felpro gaskets and head bolts.

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-2001 White Ford F-250 Super Duty 6.8 V10, 4-door, 4x4, Limo Tint, BFG KO2's, Bilstein 7100 Remote Reservoir Race Bypass Shocks, 6" Spring lift, Kenwood Double Din, K&N Intake, FlowMaster Exhaust
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post #5 of 13 (permalink) Old 11-11-2007, 09:40 PM Thread Starter
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I did replace both head gaskets and both intake manifold gaskets, the parts came from murrays and ran me $200, but that was for a valve grind gasket set so i got the plenum gasket, egr gasket, valve seals, injector O rings, head gaskets, intake gaskets, IAC gasket, throttle body gasket, and exhaust manifold gaskets. The drivers side doesnt seem to be leaking and seems ok but who knows. i did not notice any coolant leaking from the intake manifold meeting the head
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post #6 of 13 (permalink) Old 11-12-2007, 09:07 AM
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My bet is the upper intake hose is leaking right down the back of the head, or the intake gasket itself has been compromised. Remove the intake and look for coolant above the head/block junction before removing the head.

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post #7 of 13 (permalink) Old 11-12-2007, 02:37 PM
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also, head gaskets are bank specific....did you know this, and if so, are you absolutely positive you put the correct one on the correct side?
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post #8 of 13 (permalink) Old 11-12-2007, 08:39 PM Thread Starter
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well one side leaked and the other did not, but no i was not aware of this
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post #9 of 13 (permalink) Old 11-13-2007, 09:22 AM Thread Starter
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so everything has to come back apart and I need new head gaskets and new head bolts, but do i need new intake manifold gaskets as well? i did put new ones on when i put it all back together so i am not sure?
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post #10 of 13 (permalink) Old 11-14-2007, 12:55 PM
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Quote:
Originally Posted by mackenziet View Post
so everything has to come back apart and I need new head gaskets and new head bolts, but do i need new intake manifold gaskets as well? i did put new ones on when i put it all back together so i am not sure?
only if they were aligned wrong

-1996 Pearl White Thunderbird 4.6 Sport 4v with many mods:
Current Best: 13.583 @ 103.74 10/2014.
227hp/241tq measured on calibrated mustang dyno, tested at full vehicle simulation with inertia enabled, no number skewing.
-2001 White Ford F-250 Super Duty 6.8 V10, 4-door, 4x4, Limo Tint, BFG KO2's, Bilstein 7100 Remote Reservoir Race Bypass Shocks, 6" Spring lift, Kenwood Double Din, K&N Intake, FlowMaster Exhaust
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-2005 White GMC Sierra 3500 6.6 Duramax, Dually, 4-door, 4x4, Limo Tint, BFG Commercial T/A's, Rancho RS9000XL Shocks, Kenwood Double Din, K&N Intake, Banks Monster Exhaust
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post #11 of 13 (permalink) Old 11-27-2007, 01:15 PM Thread Starter
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so i took the valve covers back off and torqued the head bolts to what they should be (my father thought there was a typo in the manual and only put about 30lbs of torque on the bolts) the leak is gone and it is alive again, only one question, I now pulled a code for my bank 2 sensor 2 O2 sensor and i cant figure out why, it is plugged in, any ideas?
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post #12 of 13 (permalink) Old 11-27-2007, 01:17 PM Thread Starter
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p.s. i already bought a new set of head gaskets and headbolts from ford as well as the intake manifold gaskets and now dont need them, shoot me a pm if you need these.
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post #13 of 13 (permalink) Old 11-27-2007, 01:47 PM
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What is the code for? There could be several reasons why that PCM is singling out that sensor.

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