I will re-flush the gas and I will buy new gas from an other compagny to be safe.
I will re-clean the carburettor and check pilot circuit and air srew passage.
Then if the bike do not runs fine,i will check for air leaks from reed to air filter.(wd40)
Then if the bike do not runs fine again I will look for a crankseal leak.
I will post results later tonight
