surge

Just started the engine - idles fine but as you accelerate it starts to surge - cut in and out ? someone suggested the jet ? someone else noted the governor kicking in and out ? Any ideas. Thanks

I have a 5.5 Intek on a tiller a friend gave me because it wouldn't start. A quick clean of the carb and I got it started. However the governor is constantly surging the engine at low speed, full throttle or anywhere in between. It's the worst when the choke is wide open. If I choke it way...

I have a 5 horse power tecumseh that surges at full throttle. It came off a very old snowblower. Circa 1976 i believe. Anyway is sears number 143-665082, Serial number 8142B.It starts and idles fine, accelerates hard, but surges at top speed. The spark plug always comes out black. It runs the...