dart451 wrote:Anyone know what fails with the governor inside the engine?
governor gear flyweights can blow apart if engine is overspeeding, nylon governor gear can crack and break in half, melt in an overheat, or harden up (too much heat) and break into pieces, broken piece of anything getting into engine can jam gear and break it, governor spool shaft can brek off, slinger type governor gears, riveted hub can wear away or vibrate loose and break off, governor arm can get damaged, just to name a bunch of things off the top of my head. In short, it is fairly rare except on an abused or mis-adjusted engine, but not uncommon. KE4AVB makes a solid point- make sure governor will actually attempt to close the throttle - unhook the spring , make sure the throttle moves freely open to closed, then leave it open with spring off, see if the governor will close throttle (can always stick a small piece of wood in place with a dab of grease to hold throttle slightly open) if it won't then try again after a static adjustment, if it still won't then it's time to crack engine apart, but odds are if you have to go that far, it isn't gonna be worth it. If throttle won't move freely then governor isnt gonna do anything , you gotta find what's binding first.. if governor does close throttle (probably will stall out) then just maybe a new spring is all that's needed. - despite your stretching of the spring ,it looks a bit mangled, and may have been broken off and re-worked to hook back up (but that creates way too much spring tension) which is why I suggested replacing spring first, but if governor won't even try to close throttle, then it's pointless to bother with spring until the governor's figured out.
How poor are they who have not patience. What wound did ever heal, but by degrees? - Iago (Othello Act II, Scene 3)