update:I should have said to aim the squirt up or down using needle nose pliers. I first aimed the squirt at the edge of the throttle plate, the results were mixed of occasional backfires and coughs. Then by changing the accelerator pump time to delay I was able to squirt directly into the opening, the results, more hesitation at acceleration. Next I changed the accelerator pump timing back to squirt as soon as there was tension or movement of the throttle plate, then aimed the squirt at the floor of the venturi just at the point of opening were it seemed to ricochet in to the opening, best results ever! I just need to check the performance when the engine is cold.
" Next I changed the accelerator pump timing back to squirt as soon as there was tension or movement of the throttle plate. "
That adj you made is more then likely what got ya the best results & not as much of pump shot positioning as long as it was reasonably close to being centered it would get sucked in NP.
The accel pump is designed to cover a farily lrg lean cond when throttle is 1st opened & thats why its best to have it adj to start pump shot at the same exact time the throttle plate in carb
just begins to move so the motor has fuel it needs to start acelorating.
Its when theres a delay in accel pump shot & throttle plate starts to move with no fuel to back it up yet that theres a stumble/caugh/spit hesitation from the carb esp when comming off an idle.