Engine Performance problem
2001 Ford Focus 4 cyl Front Wheel Drive Automatic 60000 miles
My 2001 Focus 16V 2 liter hesitates at initial acceleration, most of the time. A gentler acceleration minimizes the symptom. The car runs good at higher RPM and at highway speeds. I have replaced the spark plugs a few months ago, and more recently the plug wires, fuel filter and PCV. The problem seems to be getting worse. The engine light has never come on so I don't think any codes have been thrown. Friends have suggested changing (or cleaning) the injectors, changing the MAP sensor and checking the fuel pump pressure. I can replace a lot of parts for what it would cost me at a dealer, but I don't know where to start. Any suggestions?