1999 Mazda 323

Engine Performance problem
1999 Mazda 323 4 cyl Front Wheel Drive Manual 51000 miles

My 1300cc 323f mazda revs freely when it's not under load, but under load it has a terrible flat spot which can sometimes be improved (temporarily) by removing my foot fom the gas pedal and then re-applying.
Sometimes the car will not accelerate for 2-3 seconds and sits at a static speed (usually 30 - 40 mph)
it is not so bad in first gear but gets worse in 2nd and 3rd.
Although I suspect fuel starvation I wonder if you colud give me any pointers.
Any advice would be greatly appreciated.
Best wishes, Colin
June 11, 2009.

Check out the related content below while we wait for the question to be answered by a professional mechanic.