K i just built a d16y8 with 12:1 compression and could just be paranoid but when i pull off the hose that goes from the crankcase to intake tube air blows out of the crankcase...not a ridiculous amount of pressure but enough to feel easily. Is this normal? I've read that crankcase pressure could indicate blowby?

I've never done a leakdown test but i'm guessing they determine blowby? How are they done and what do i need?

Thanks,

Vince

 

normal