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Leaking valve cover gaskets affect mpg?

Discussion in '1st Gen. Tacomas (1995-2004)' started by airedale, Jul 14, 2011.

  1. Jul 14, 2011 at 6:16 PM
    #1
    airedale

    airedale [OP] New Member

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    Mckinney,Tx
    Vehicle:
    02 Limited SR5 TRD
    Stock
    Anyone know if leaking valve cover gaskets on a 5vzfe affect mpg. Would this affect the vacuum on the motor, thus the fuel atomization in the engine? I recently replaced leaking intake manifold gaskets and valve cover gaskets on my tahoe and it made an improvement.
    Not sure how this motor works with its pcv valve system. I was not able to locate the pcv valve to test.
     
  2. Jul 15, 2011 at 7:52 AM
    #2
    bicklebok

    bicklebok Well-Known Member

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    Ronnie
    Montgomery, AL
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    2000 Xtra Cab 4x4 SR5
    PCV valve should be easy to find- on the valve cover.

    Also, get a socket and snug up your valve cover bolts. Thats what I did on mine when I bought it, and the leaking stopped.
     
  3. Jul 15, 2011 at 7:57 AM
    #3
    hillbillynwv

    hillbillynwv Well-Known Member

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    Fairmont, WV
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    08 Tacoma 4x4 TRD V6 SR5
    Rear Leaf Spring TSB, Front Bilstein 5100's set to 1.75, Goodyear Wrangler DuraTrac 265/75/R16 tires, Black WeatherTech Floor Liners, aFe Pro Dry S air filter, lighted 4x4 switch......
    PCV is located on the back of the valve cover. Snug the valve cover bolts lightly, you don't want to break one off. This will stop the leaking.
     
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