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Motor has had VRO replaced. Pulse limiter replaced. Good compression. Hoses and clamps replaced on pulse line. Oil is disconnected an gas is mixed in main tank at 50/1. Plug is unplugged from VRO for Oil alarm. Carbs have been rebuilt. (Float position problem??). Gas checked and is fresh and water free. New filter in fuel filter. Fuel free flows from tank to container when bulb is pumped. New plugs.
Here is what it is doing. It starts right up. Idles a bit rough but I don't see any low speed idle screw on these carbs. (2 carbs). It will run right up to full throttle and will run indefinitely at that speed. It will putt around at low throttle with no problems at all. If I throttle back to about 1/2 to maybe 3/8 throttle it will run maybe 30 seconds and then just as if I had pulled the throttle back, it will slow down. Might jerk a couple times. Not totally dying but just pulse to faster and slower RPM. If I throttle up it will hesitate a second but will go back to full throttle no problem.
Any idea would be appreciated.
Here is what it is doing. It starts right up. Idles a bit rough but I don't see any low speed idle screw on these carbs. (2 carbs). It will run right up to full throttle and will run indefinitely at that speed. It will putt around at low throttle with no problems at all. If I throttle back to about 1/2 to maybe 3/8 throttle it will run maybe 30 seconds and then just as if I had pulled the throttle back, it will slow down. Might jerk a couple times. Not totally dying but just pulse to faster and slower RPM. If I throttle up it will hesitate a second but will go back to full throttle no problem.
Any idea would be appreciated.