oil in the intake, anyone else?

Discussion in '94-95 5.0 - Specific' started by 94yellow50, Mar 25, 2014.

  1. 94yellow50

    94yellow50 Member

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    So end of last fall I swapped to fox style throttle body and a volley systemax 2. Ever since I get oil that is coming out of the throttle body and dripping on the valve cover then running onto the exhaust. I need to get this fixed before I get the car out this spring. Anyone have suggestions? I got a new pcv valve to try. And I have an air/oil separator to add in line if needed. Anyone else run across this? I'm not sure if it did it with the cobra intake n stock style tb setup. With the blade opening sideways instead of up n down it creates a place for the oil to seep out on bottom now where as before it was solid on the bottom. So its tough to say if the intake caused it or not.
     
  2. kb1982

    kb1982 Active Member

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    I run the same intake and tb and have / had the same problem. It will only seep oil out the tb when you shut it off, otherwise its getting burned in the cylinders while running. I pulled the pcv hose from the intake and didnt have that problem anymore, so I installed an oil separator to catch it.
     
  3. Addermk2

    Addermk2 Well-Known Member

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    You have excessive blow-by. The solution is simple. Rebuild your engine.

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  4. RichV

    RichV Well-Known Member

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    Off chance, had a similar issue. Right below the PCV is a oil galley plug. Mine was not plugged (new motor), it shot oil up to the PCV and got into everything. Took a while for all the oil to find it's way out.

    I would also verify the new one works right, and you have the bottom screen installed.

    Is it coming out of the actual intake manifold? Or the intake rubber/plastic that goes to the MAF?
     
  5. 94yellow50

    94yellow50 Member

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    The motor is all new. Freshly machined. New pistons new rings. The screen is in there now. Its old. I'm replacing with the new pcv valve and screen. Its weird because a friend of mine has same setup in his fox but doesn't run pcv valve. His is plugged n runs breathers n his gets oil in the intake as well.
     
  6. Addermk2

    Addermk2 Well-Known Member

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    Less than 5000 miles?

    If so, some oil burning is normal.

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  7. 94yellow50

    94yellow50 Member

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    Well its less than 5k. It had about 126 on the original motor. Now its just under 129. The car doesn't get driven a huge amount. That's also over the course of 2 years.. I read on another site about someone using two pcv valves. One at the front of the valve cover, so as to not be pulling all the way to the back of the block for the whole motor. That example said their problem went away.
     
  8. Addermk2

    Addermk2 Well-Known Member

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    That might have been me. I WAS running two valves for a while.

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