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oil leak complaint

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Sparky, Jan 9, 2001.

  1. Sparky

    Sparky 1/2 ton status

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    I got to let out some steam here. First of all I finaly have my truck up and running since i put a new cam and lifters in, fly wheel, and part time kit on the 203. The truck runs great except for one problem. I KEEP GETTING !@##$% OIL LEAKS! First, the rubber gasket on the back of the intake manifold had pushed its way out when i put the intake manifold on after the cam swap. I drove my truck for three days without a drop of oil. Today it developed another oil leak. About a quart every 50 miles. Why is this happening!?!?! This is not the first time I have had oil leak problems either. I was leaking oil like a @#^#% a few months before I did all the work. Anyone know why I am cursed by the oil leak demon. Someone tell me how to get the bastard off my back! How would I spring another leak if nothing on the enging was touched? HELP ME!

    Sparky

    When all else fails... Check the blinker fluid.
    78 K-5
     
  2. DMK

    DMK 1/2 ton status

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    Use RTV on intake manifold not rubber seals. Torque all bolts to specs and correct sequence. Assume all leaks are coming from manifold?
     
  3. HarryH3

    HarryH3 1 ton status Author

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    Be sure the PCV valve or the line running to it isn't plugged. That would build up excessive crankcase pressure. Does the engine have a lot of miles on it? Excessive blowby can build crankcase pressure as well, creating leaks, pushing oil into the air cleaner housing, etc.

    <font color=black>HarryH3 - '75 K5</font color=black>
    <A target="_blank" HREF=http://ThunderTruck.ColoradoK5.com>http://ThunderTruck.ColoradoK5.com</A>
     
  4. mudhog

    mudhog THEGAME Staff Member Super Moderator

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    i agree sounds like you are getting to much pressure in the crank case

    s.smith 77blazer lookin 4 mud
     
  5. Emmettology 101

    Emmettology 101 3/4 ton status

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    Yes definately get rid of those crappy stock rubber gaskets and lay a 1/4" bead of silicone/gasket maker on there.

    Also mke sur eyou aren't tightening things too uch because that could pinch the gaskets and cause leaks.

    Mike [​IMG]
    See <font color=green>EMMETT</font color=green> -&gt; <A target="_blank" HREF=http://emmett.coloradok5.com>http://emmett.coloradok5.com</A>
     
  6. MudFrog

    MudFrog 1/2 ton status

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    When I got my new engine in my old truck, we didn't have any type of breather. The PCVvalve was connected but since I didn't have a breather cap the rubber hose on the valve would collapse from suction. And to this day I don't know where I was loosing the oil but when I would go down the road at a high RPM white smoke would pour out from the compartment. Once I put a breather cap on I stopped loosing the oil and everything was fine.

    89 K5 Silverado
    <A target="_blank" HREF=http://mudfrog.coloradok5.com>http://mudfrog.coloradok5.com</A>
     

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