Solved Measuring Blow By On A 94 Chevy Turbo Diesel 1988 1998 Chevrolet Pickup
Chosen Solution Oil coming out of dipstick and breather to turbo. Was told it is excess blow by. How does one measure this What are the causes? cikeijr, Blow BY is caused by either worn piston rings or bad cylinder walls. Most common are the rings. The older and more worn the piston rings and cylinder walls of an engines gets, the more likely it will allow greater Blow By. By definition it is “leakage of the air-fuel mixture or of combustion gases between a piston and the cylinder wall into the crankcase of an automobile....