A faulty PCV valve can cause many problems, including engine misfires, oil dilution, hard starts, a rough idle, and oil leaks ...

The integrity of the exhaust emission system in a passenger vehicle can best be maintained by monitoring its performance continuously on board the vehicle. It is with the intent of monitoring emission ...

Q: My 2004 Buick Park Avenue Ultra with 60,000 miles misfires when restarted hot. The missing lasts for no more than 30 seconds. My mechanic is stumped. Any thoughts? Other than this, the car runs ...

PACCAR has been granted a patent for a diagnostic method to identify misfire conditions in individual engine cylinders of turbocharged diesel engines. The method involves using pressure and crankshaft ...