I have a 95 3.9, just had head gas replaced and now its boiling over in the overflow tank. done compression test on each cyl. all are the same. it does this after bought 30 min of driving. oh yea 138,000 on the clock. is there something I am missing?
boiling after head job
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yes
what caused the HGF?
If that wasnt fixed then thats what is causing it to overheat again.
what caused the HGF?
If that wasnt fixed then thats what is causing it to overheat again.
alex8882
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air locks maybe. Either that or a failure on the water pump,or thermostat,blocked rad
I noticed coolant leaking from the front of the heads on both side just where they meet the block. that is why the head gas was replaced. it has never ran hot and still doesn't. there was no gushing sounds in the system so I can only assume it was bleed properly.
alex8882
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have you flushed the cooling system. Also do you get any pressure in the head tank straight away or does it pressure slowly
jamesmartin
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cross your fingers block not cracked behind liner passenger side if non serpentine belt,but as said check rad hot all over core
juiceyv8
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heads scimed??
jamesmartin
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i would get recored or replaced if hot at top and not hot going down core evenly
alex8882
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i've never used a flushing agent, just removed the stat, and run a hose pipe through the coolant bottle with the top or bottom hose removed, until the water runs clear. However if your not getting even heat on the rad then as said above replace it or get it repaired. good luck thou matey
since my last post I have ran truck till it came up to normal temp shut it off and felt the rad all over from top to bottom and it was hot on top and the further down the cooler it got. with that as some of you stated it must be clogged, now my question is do I try to get it fixed or just buy a new one?
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