Motor runs fine at idle and full throttle. At about 1/2-2/3 steady throttle, there seems to be a sag in performance, (sounds like a cylinder dropping out, but very little RPM or speed drop). Advancing throttle will correct problem immediately.
Plugs are good, compression is good, carbs and fuel pump have been rebuilt. I have run Sea Foam thru fuel system.
This model has the 2 cyl. idle, 4 cyl. run feature. What exactly triggers the switch as throttle is advanced ?
Plugs are good, compression is good, carbs and fuel pump have been rebuilt. I have run Sea Foam thru fuel system.
This model has the 2 cyl. idle, 4 cyl. run feature. What exactly triggers the switch as throttle is advanced ?