hesitation after warmup

car runs fine on cold start but after warming up (about 5-10 mins) it sound like the ignition retards, has a major hesitation, and the car doesn't want to move. the car is a 1990 acura integra ls with the 1.8 B18A1, 5
speed the timing belt has been replaced which was causing a miss, now there is only the hesitation after it gets warm any advice would be helpful
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Just had a guy email me on just this (you aren't him are you?) Try some Techron to see if it's a fuel problem. That's what he did and it seemed to work for him.
Also check the ignition timing.
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TeGGeR®

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