My engine is having a lot of hesitation problems at lower rpms. I reset the valves to spec and have 120 lbs compression on all cylinders. I changed out the fuel filter and have sprayed lots of carb cleaner in the carb. Still nothing helps. Where should I look from here? I was told possible accelerator pump, is there any way to check it? Any info and advise would be appreciated. Thanks The truck is a 88 samurai with the 1.3l