Engine Performance problem
2000 Ford Focus 4 cyl Two Wheel Drive Manual 207000 miles
Car stumbles and won't go when under heavy acceleration. When starting from a stop car stumbles but once the RPMs climb above about 2200 it gets better but still persists. Car has no problem at highway speeds until you mash the pedal to pass then it bogs down. I pulled the catalytic converter to make sure it wasn't plugged and problem continued. The hose from the PCV valve to the intake manifold sucks itself closed. I've replaced the PCV valve and the hose with a thicker hose but still sucks closed. My repair manual talks of a secondary inlet that opens under heavy acceleration to allow more air to the engine but I didn't find anything of the sort when I pulled the intake manifold. Any help would be appreciated.
Sunday, December 6th, 2009 AT 1:56 AM