Hi everybody!! I got some great help since my last thread in tha Juice Box. Had a vaccuum problem for sure that kept the 455 go out in gear. Got that all solved as far as I can tell.... I hope. Its now going like a rocket :3gears: , pulls real great, but still has a flaw. When putting in gear, no problem what so ever, but when you touch the gaspedal just normal it bogs a fraction of a second (mostly engine stops) after bogging it picks up big time. Tried it at different initial timing from about 6-14 degrees, but all same bogging. I have set dwell at about 30-31. Is it a carb problem? o No: Hope you guys can help me forward. :beer
Verify accelerator pump operation. With the engine off, look inside the carburetor and open the throttle. You should see a steady squirt of fuel while the throttle is opening, and it should stop once you stop moving the throttle. If you have a good steady squirt, try moving the accelerator pump linkage to another hole on the arm. The arm I refer to is on the driver's side of the carburetor, directly behind the front mounting bolt. There is a rod with a clip that goes through the arm, there should be at least 1 other hole to choose from. Some carbs do not have the extra holes, in which case carburetor R&R will most likely be necessary. If the timing is correct, as you state in your post, the issues are most likely caused by carburetor problems.
Its the accelerator pump,replace it,and/or the secondary air flap spring is too loose and is opening a little too early.Try winding it up about an eighth of a turn. gary
