Originally Posted by
deadmancourt
buy a GX motor and you wont have that problem...Remember it is a 3 port so it doesnt have the top end that you MAY be trying to reach(thus creating a lean bog) have you tried running both needles super rich( not four stroke rich) but rich to see if it still does it even if you have crap for power lol....if it still does it then there IS a air leak some where!(I DONT CARE WHAT YOU SAY)...

there is a leak somewhere if it does it with a SUPER rich setting

only happens on low end, top end runs awsome!! i have replaced front bearing also

, i have 513.00 into this engine!!! no air leak! everything is sealed and tested! aparantly there are a lot of guys having this problem with this engine, doing same thing! is there a recall on it? lol...?..lol...??????