Nick, mine is an mtx. I've got a concurrent post going about what I think is excessive air flow coming from the oil filler. Big Jim suggested a pcv problem could cause the air flow problem. With 88SVT's idea about an engine misfire, I'm wondering if the pcv could be causing both problems. My plugs and plug wires were changed about 10K miles ago.

95 Contour Zetec, ATX (wrecked, sitting in the barn) 95 Mystique Zetec, MTX 2000 Taurus SEL 3.0L Duratec 1994 Crown Victoria LX 4.6 V8 1993 Chevy Silverado 4.3 V6