Quote:

Absolutely not.

Causes.
Plugged breather valve
Excessive ring blowby.
Blown head gasket passing gasses into crankcase.
Cracked piston.

Only X amount of ways to pressurize the crankcase.




What do you think would be the leakdown values for a cylinder with excessive blow-by to create crankcase pressure? 100% perfect, what is the leakdown magnitude (%) for 'not good'? I've gotten different answers for this question before so i'm just trying to see where the average 'no good' value falls?