LA Porsche and BMW Repair

The Engine oil air separator directly affects the engine crankcase atmosphere because basically, all Porsche’s from 1980 on, including the current 986, 987, 996, 997, Cayman & Cayenne engines, all are positive crankcase type systems. This means that the engine crankcase has vacuum supplied from the intake manifold to collect and burn the residual combustion by-products or blow-by in the crankcase by running it through the engine again, all in an effort to lower the vehicle emissions. On most occasions when the oil separator fails, the low pressure (vacuum) in the engine crankcase rises to an unusually or abnormally high figure and, more likely than not, it ends up drawing engine oil into the intake system. This usually fouls spark plugs and, in rare cases, causes damage to the oxygen (O2) sensors, catalytic converters and possibly various other sensitive fuel injection components. In extreme cases an oil separator failure with excessively high vacuu ... read more

During my commute to work the other day I saw a person wearing a surgical style mask driving a newer Porsche. I assumed the mask was worn to prevent the spread of germs. My first thought was if the driver had any knowledge about the interior micro-filter or air recirculation system in their vehicle. The recirculation system and microfilter work as an integral part of the automobiles ventilation system which allows the operator to choose whether they want interior or exterior air supplied to the passenger compartment of their automobile. If the recirculation feature is chosen, this literally re-circulates the interior air back through the ventilation system and again into the passenger compartment, this also impedes the entry of particulate matter from the exterior of the car. If the recirculation feature is not chosen then exterior air will be supplied through the ventilation system and into the passenger compartment. The 1992 928 was the first P ... read more