rebuilt blaster doesnt idle

[thekingblaster]

I just rebuild the top end on my blaster and went to break it in and it barely starts and doesnt idle and sometimes it back fires, it idles at about 1/4 throttle at its a boggy type of idle

I had to go .40 over with a wiesco piston and cometic gaskets with no! Air leaks
Need help cause this is pissing me off

 

[Blaaster]

Reeds, float level, fuel starvation, incorrect idle/air screw setting, old gas.

Double check for air leaks.

How long did it hold 7psi for?

Is the exhaust pipe fully sealed to the jug?

 

[thekingblaster]

Howtell if reads go bad and I will check again for a air leak and yes the flanges sealed to the top endand on this OKO carb there is only a idle screw

 

[Blaaster]

Howtell if reads go bad and I will check again for a air leak and yes the flanges sealed to the top endand on this OKO carb there is only a idle screw

How is air added to the idle mix?

Reeds could be chipped, frayed, cracked or just not seating.

 

[Herpderplol]

Howtell if reads go bad and I will check again for a air leak and yes the flanges sealed to the top endand on this OKO carb there is only a idle screw

How is air added to the idle mix?

Reeds could be chipped, frayed, cracked or just not seating.

Pictures if you arnt sure king, we can always help I:I

 

[Blaaster]

There is an air screw you may have to look for it.

mixture screw - Yamaha ATV Forum