Suzuki Other

I have a problem with Suzuki Zen in Accelartion,
The car is Euro II with MPFI. The Car takes time in accelerating even if you press full throttle. Also the acceleration breaks in between in 1st/2nd and third gear.I have replaced clutch plate/petrol filter/Spark plug with New one but no difference.
Is it something to do with carburator
November 13, 2006.

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