Engine bogging down at 3-4000 rpm’s
While in neutral or riding it, the engine bogs down to almost dying and then catches up on the rpm’s. It feels almost like a rev limiter. Here is what I have done to the bike so far:
Bike is a 2006 with 7,000 miles, all stock muffler, carb, no jet kit, elevation here in AZ is 5,000ft.
Cleaned and coated the inside of the gas tank in Sept.
Put in new gas again yesterday
Installed a eagle mikes gravity fed petcock in Selp
Rebuilt carb in September and took it out again yesterday to clean it, diaphragm is not torn and carb was clean, pilot jet etc
Put in new spark plug yes
Put in stead engineering brass choke tube, started up bike and took the brass choke barrel off to rule out the choke and there was no change.
Adjusted fuel mixture screw again yesterday
Opened gas tank, no pressure or vapor lock tried reserve with no change
De smogged bike last week and put all that smog equipment back on to see if that was the cause of the bogging down and there was no change
Bike starts up and idles fine
Thanks again for your help Greg.