splcrazy

hello everyone been a long time since i needed help but here i am again , i take out my 5b today its was all going sweet untill the engine decided to go full throttle all on its own , i took it home thinking it was the clutch mount bolts snapping so i removed it all and its all good so it cant be that , checked the reeds cos its a TS induction engine and thats all good the carb seems to be functioning ok the carb flap is closed when the engine is started. but when it does start sounds like a buzzing vibration in the cylinder , and when i slowly pull the cord the head feels like it wants to shake but the bolts are tight doesnt look like the cylinder is cracked , im guessing now maybe the crank conrod or something has snapped inside ? but could a snapped conrod or something broken inside cause the engine to open throttle on its own the carb flap is closed when this happens , or could it be the carb 813 has died maybe causing this ? i dunno this is a strange thing to ever have happen to me first time.

splcrazy

could this be the problem just opened it up and found the top of the bolt snapped off

Johnnysplits

oops!!! bolt failure

DarkFire989

Oh thats painful too see after how much that engine cost.

hndaman1

My Feedback: (6)

agreed, sometimes More $$$ doesn't mean the best..

splcrazy

took me friggen ages to get the snapped bolt out with vise grips , ill start it up today and see if it works , i chucked in a new ring while i was at it , and put in the new metal gasket that DDM is making now along with the new metal exhaust gasket ddm makes too lol the metal ddm cylinder gasket is a pain in the because when trying to put it on it keeps getting magnetized to the flywheel

splcrazy

fixed , what you know it was that pesky broken bolt causing it to high rev on its own , ran it today and its all good