How do you decarbonize a scooter ?

Question

it runs like **** i just replaced the spark plug not getting top speed could the exaugst be blocked ?

Answer 1

you need to flog it across the paddock mate.  you obviously don't ring its neck when you ride it right?

Answer 2

Doubtful. I would be taking it to a shop and getting the carb adjusted.

Check your air filter is clean too

Answer 3

Try engine treatment (Seafoam works great).  Otherwise, the only way to manually decarbonize an engine is to pull the cylinder head and clean the cylinders.

Answer 4

If the scooter's been doing short trips on mineral 2-stroke oil it could well be carboned up. Giving it a good thrash will help, but if it's affecting performance you will have to take the pipe off.

Ideally you put an oxy-acetylene torch in it and burn it out, but failing that tip a bit of petrol in it, prop it up in a cement block, and let it burn. You'll perhaps have to re-light it, but it does work.  When it is working you can hear the cracking/burning of the carbon on the exhuast wall. After it's done and cooled, tap out the broken carbon.