G2 noise

[2112scot]

Hi
Is it possible to have spark knock? And also the cart seems low on power.
I have checked the air filter =, fuel filter, spark plug . The drive belt looks good . I also checked for water in fuel , all seem to be good. Will a bad motor mount let it make noise like spark knock ?

[CritterAssault]

I'm having a similar issue. Almost a "clanging" noise underneath. Someone told me it could be one of the clutches but I am unsure.