Diagnostic Solutions: Fuel System Pressure & Volume Checks
For maximum efficiency, modern import fuel injection systems require that fuel be delivered at a specified volume and pressure. Because the fuel injector’s job is to mix fuel with the intake air charge, it must produce a finely misted, conical spray pattern through the fuel injector nozzle. Lower-than-specified fuel pressures not only fail to provide
Mercedes: Deciphering Driveability Dilemmas
As the oldest surviving automotive manufacturer on the planet, Mercedes-Benz has developed a reputation for superior engineering and quality. Models with new features and mechanical developments have been consistently introduced for more than a century. For the automotive technician, this line of vehicles has been a source of never-ending education. Innovation after innovation has challenged
Selling Services: Bleeding ABS Brakes after Component Replacement
Bleeding the brakes after brake components have been replaced is a step you don’t want to skip if you want a firm brake pedal. Air trapped in the lines, calipers or wheel cylinders will make the pedal feel soft and spongy. Air is compressible, so when the brakes are applied any air bubbles in the
Shaken, Not Steered
Wouldn’t it be great if various vibrations in the car were something that we could measure, sort through, select one and assign numbers to it that can be used to find its source? Wouldn’t be even better if we could determine by the numbers whether the vibration was a balance issue or excessive runout with
Spark Source
Since the earliest days of the internal combustion engine, spark plugs have provided the ignition source for the air/fuel mixture. Over the years, spark plugs have gotten smaller, and the use of exotic metals in their electrodes has extended plug life to 100,000 miles or more. But the basic design of a spark plug really
Tech Tip: MIL Illuminated, System Lean in Ford/Lincoln/Mercury Vehicles
This article is intended to aid in diagnosing DTCs P0171, P0174, P1130, P1131, P1150, P1151, P2195 or P2197 (system lean or lack of HEGO switches) when a vacuum leak is present. HEGO sensors, MAF sensors and PCM replacements are not an effective repair when a vacuum leak is causing the above DTCs.
OTC Releases New Automated System Test Feature for Genisys
OTC has released the Automated System Test for the Genisys scan tool. When the test is installed, technicians can select this feature on the main menu with a single click and Genisys automatically performs a complete diagnostic evaluation in a fraction of the time it would take the technician to perform the same tests manually.
Engine Performance
Smart Diagnostics Begin With Basic Checks and Solid Service Information
Diagnose Problems Faster and More Easily with the Raytek MiniTemp Infrared Thermometers
Portable IR thermometers have become indispensable tools for automotive troubleshooting and diagnostics. Quick noncontact temperature measurements make it easy to spot cooling system faults, identify engine misfires, check for proper A/C performance, verify catalytic converter operation and much more.
Good Good Vibrations
Wouldn’t it be great if various vibrations in the car were something that we could measure, sort through, select one, and assign numbers to it that can be used to find its source? Wouldn’t be even better if we could determine by the numbers whether the vibration was a balance issue or excessive runout with