the crankcase filter, or a.k.a PCV valve and filter, is located at the rear of the lower intake the PCV valve fits on top of a breather element that sit further down the hole the PCV valve sits in if this becomes clogged yes you will have poor crankcase ventilation, over time can lead to leaking gaskets.
__________________ 1993 LX 5.0 stock long block, 1.7 crane roller rockers, cobra valve springs, explorer intake upgrade, 65mm throttle body, 80mm maf ,Moroso CAI,Shorty BBK headers,BBK Adj fuel reg, BBK underdrive pulleys, electric fan, B303 cam, off-road Hpipe, 40series flowmasters, 3:73 gears, Alum drive shaft, King Cobra clutch, Pro 5.0 shifter, BBK gripp LCA,190lph fuelpump,Moates Burn2 Chip Programmer, with EEC-IV bank reader |