Porsche 911 Problem Report
Porsche 911 Misfire due to failed mass air flow sensor or failed purge valve
A failing mass air flow sensor or EVAP purge valve can cause misfire issues.
Valve cover leaks are common.
My mechanic has told me that there is an air leak which is causing an irregular idle with my 92...
Issues with the air flow meter flap or calibration can cause fuel mixture control problems.
Ports and passages for secondary air flow can clog at the cylinder head/cam housing area. Parti...
If engine misfiring, rough running, or fuel consumption issues are not resolved quickly, the ca...