Mazda Repair: Mazda 323 F year 2000, mazda 323f, clutch pedal

Question
Hi
Have a 1,5 litre DOHC Mazda 323F hatchback model year 2000 done 104000 km on the clock .

When car is warming up from cold , - just before normal temperature it drives super , - nothing wrong  . When reaching normal temperature , - theres some sort of "hesitation" /delay on acceleration pressing speeder pedal , - espcially from o - 50 km per hour accelerating . Its just like the car is "holding" back kind of delayed in acceleration (a couple of seconds) .
Air filter is new , oil is new ,  timing okay , plugs new , tried with injection cleaner (didnt help) tried to disconnect fuel contact at clutch pedal which didnt change anything .
What can be the problem ? Or is it just the 323F way to drive ( have only got the car for 3 weeks) ??
Any ideas ?
Greetings
Cn

Answer
might be the butterfly in the throttle sticking or the throttle cable sticking sounds like something is just sticking you can try throttle body cleaner before trying or paying to get cables replaced also try lubing up the throttle cable where it attactes to the throttle body and check the cable for and looseness or binding with someone pressing and releasing the gas