Blow-by is a standard engine drawback that may result in decreased energy, elevated emissions, and even engine failure. It happens when combustion gases leak previous the piston rings and into the crankcase. This may be brought on by numerous components, together with worn or broken piston rings, a scored cylinder bore, or a defective valve prepare.
There are a number of alternative ways to examine for blow-by. One technique is to take away the oil filler cap whereas the engine is operating. If there may be extreme blow-by, you will notice a whole lot of white or blue smoke popping out of the filler gap. One other technique is to make use of a vacuum gauge to measure the quantity of vacuum within the consumption manifold. If there may be extreme blow-by, the vacuum shall be decrease than regular.
