your definately getting alot of pressure in your crankcase. replace pcv. check your vent tubes make sure theres no sludge in there or kinked.. this could also be the your getting alot of blowby through higher rpms. do compression and leakdown test and you'll know whats going on.. and check that catch can..
a few weeks ago on my peterbuilt 340 service truck it got the crankcase pressure soo high going up a steep hill at work at a mine. it only took a few sec. when the stop engine light came on and blew the breather apart and cracked the valve cover open.. now that was a trip...
a few weeks ago on my peterbuilt 340 service truck it got the crankcase pressure soo high going up a steep hill at work at a mine. it only took a few sec. when the stop engine light came on and blew the breather apart and cracked the valve cover open.. now that was a trip...