Maxxforce 13 Crankcase Breather Problems -

While the breather itself can fail, it is often blamed for problems actually caused by "blow-by"—combustion gases leaking past worn piston rings or cracked pistons.

The MaxxForce 13 engine, manufactured by Navistar, is well-known for its complex emissions systems, and the is a frequent source of trouble. When this system fails, it often leads to excessive oil being expelled through the road draft (blow-by) tube. Common Crankcase Breather Problems Failing Centrifugal Separator (Squirrel Cage) maxxforce 13 crankcase breather problems

High crankcase pressure from worn rings can overwhelm even a functional breather, pushing oil and vapor out of every available seal and the draft tube. Key Symptoms to Watch For While the breather itself can fail, it is