My 340 is blowing oil smoke out of the exhaust during prolonged engine braking/deceleration. It does not burn oil at any other times.
This started when I switched from dual breather caps to a PCV and single breather. The engine vacuum was pulling a lot of oil through the PCV so I installed a catch can I pulled off my Ram. That cut the oil getting into the air/fuel mixture for everything but the hard engine braking.
I installed a set of valve covers with baffles thinking that this would eliminate the oil but it didn’t change anything. My previous did not have baffles for some reason.
Now I need some more ideas. My current PCV is a Microguard 2088 or at least 2088 is what it says on the PCV housing.
Should I try a different PCV? Or something else?
