Mercedes-Benz Engine Diagnostics
I’ve always loved the puzzle. Check Engine warning lights have become an everyday chore for me over the last five years. It’s a challenge that extends my interest and creativity in the auto service profession. Before I deal with some specific Mercedes-Benz faults that I’ve researched, I must say that the ability to really solve
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ls, appear to be the next generation of fuel injection for gasoline engines. The reasons for implementing this technology are legislative, and also include market requirements that drive the need to reduce fuel consumption, while at the same time, meet the increasingly stringent exhaust emissions regulations. According to engineers at Delphi Corp., gasoline direct injection
OBD II Diagnostics:Tips And Tricks to Make the Process Easier
The Malfunction Indicator Lamp (MIL) can be a golden light of opportunity for your shop. If the light comes on, it means the Onboard Diagnostics II system (OBD II) has detected an emissions-related problem. OBD II is designed to turn on the MIL if a problem occurs that may cause emissions to exceed federal limits
Muscling in on Restoration & Performance Work: Part 1
As automotive technology continues to become more complex with each new model year, you may be longing for the “good ol’ days” when engines had carburetors and distributors but no sensors, fuel injectors or computers. Most driveability problems were fairly simple to diagnose and only required a trained ear and a few basic tools. Alas,
Understanding Today’s Multi-Coil Ignition Systems
Distributorless Ignition Systems (DIS) have been around for more than two decades, but in recent years the trend has been to multi-coil systems such as Coil On Plug (COP) or Coil Per Cylinder (CPC) ignition systems, and Coil Near Plug (CNP) ignition systems. COP systems have become the hot setup for a number of packaging,
Analyzing Ignition Misfires and Plotting a Diagnostic Course
Uh oh. The Malfunction Indicator Lamp (MIL) is on, and you’ve just found a misfire code. It’s a code P0304, which tells you cylinder number four is misfiring. There are no other codes and the engine has a steady miss. Now what? Misfire diagnosis in this kind of situation should be fairly easy. You have