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    rayhunts's Avatar
    rayhunts Posts: 1, Reputation: 1
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    #1

    Sep 23, 2011, 10:26 AM
    What could cause too much crank case pressure in a 7.3 diesel?
    I have too much blow-by coming out of filler neck. But when you hold the RPM's around 2000, the blow by goes away and there's no pressure out of filler neck tube.

    Any ideas?
    chaosmaster1's Avatar
    chaosmaster1 Posts: 294, Reputation: 12
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    #2

    Sep 23, 2011, 09:40 PM
    Maybe it's a clogged pcv valve?
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