'99 12.7 s60 leaking between head and intake

Discussion in 'Trucks [ Eighteen Wheelers ]' started by gokiddogo, Jul 14, 2016.

  1. gokiddogo

    gokiddogo Road Train Member

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    Leaking what appears to be oil from between where the intake manifold connects to the block. Worse at cylinder 1, 2 isn't as bad, 3 not as bad as 2, 4 is barely leaking, 5 and 6 no leaks. Is this something to worry about? It is difficult to take decent pictures. The oil has actually pooled at cylinder 1.
     
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  3. spyder7723

    spyder7723 Road Train Member

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    Assuming its not oil being shoved from the turbo all the way through the cac to the intake, its in the head. Valve job in your future. Personally id just buy a remaned head from detroit. Not much more than what a machine shop will charge you to do a valve job.
     
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  4. wore out

    wore out Numbered Classic

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    Easy does it now, pull that blue line off that goes from the intake to compressor see if its full of oil. You could just have compressor trouble. Also make sure blow by tube isn't restricted. If the head is that bad that oil is running past the guides then exhaust is to. It cooks the oil on the valve springs which is real easy to spot by pulling the cover.
     
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  5. spyder7723

    spyder7723 Road Train Member

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    You know what i always forget that the compressor gets its air from the intake. I did away with that the week i bought mine and put on oil bath filter on the compressor intake.
     
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  6. gokiddogo

    gokiddogo Road Train Member

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    Removed line at intake where it feeds compressor. No oil in there. Checked all air tanks (I almost never drain them) and there is little to no moisture coming out. Valve cover coming off is an at home thing.... that's beyond what I feel comfortable doing at a truck stop.
     
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  7. gokiddogo

    gokiddogo Road Train Member

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    I should add I have oil samples done every 3 or 4 times, always clean. Waiting for the results now actually. Overhead was run shortly after I got this truck, I'd estimate 250,000 miles on the current valve set. Just don't need a catastrophic breakdown....knock on wood
     
  8. baha

    baha Road Train Member

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    Are you running your truck for A/C, clean up all oil then run down hi way for hours when you stop ck for oil, then ck. after sitting all night at idle to see a diff. amount of oil.
     
  9. gokiddogo

    gokiddogo Road Train Member

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    I almost never idle for ac. I use the redneck generator setup with window unit hanging out the door or just use the window screens and a fan.
     
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  10. baha

    baha Road Train Member

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    A new valve cover gasket will hopefully fix it up?
     
  11. gokiddogo

    gokiddogo Road Train Member

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    Going to let my mechanic deal with it when I get home. Coming from between where head meets block and intake air goes in.

    In the mean time ...
    389 dreamin............
     
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