Help! Brand New hpi k4.6 engine leaking air - front bearing

[synrgy]

Hi i just picked up a savage ss kit.

My 4.6 seems to leak air from the front bearing.

I connected a piece of fuel tube to the fuel inlet and blocked the carb & exhaust ports.

When the carb slide is open and i blow on the tube air escapes front the front bearing.

When the carb slide is closed (Idle position, slide open 1mm) no air escapes from the front bearing.

Is this an air leak or is this how the engine is suppose to function ?

My last 4.6 did the exact same thing and i thought i had ruined the front bearing from cleaning it with carby cleaner. This motor hasn't even seen fuel yet and they both do it.

 

[Bankrupter]

No front bearing seals out air. On road mills you can see light threw.. no rubber seals at all.

 

[synrgy]

No front bearing seals out air. On road mills you can see light threw.. no rubber seals at all.

so it should be fine then ??

 

[soulja]

i'd try running it first....then see. i think no engine is completely air tight.......