May 2014 Archives - UnderhoodService
Why Direct Injection Engines Develop Carbon Deposits

Direct injection in its current form has been around since 1997. During the next 10 years, Volkswagen, BMW, Mercedes Benz and many others introduced engines with direct injection. Today, almost all new engines have direct injection. When the early direct-injection engines hit the three-year or 30,000-mile mark, some developed driveablity problems due to carbon build-up

Tooling Up For Today’s Transmissions

Most modern automatic transmissions come equipped with electronic sensors and electric solenoids that are connected together by a module. Without these, most automatic transmissions will not get out of park. While these components can make a worn transmission shift like new, they can also make a mechanically healthy transmission malfunction. Tooling up in order to

Mercedes-Benz Auxiliary Water Pump Diagnostics

A Mercedes comes into your shop with a complaint of poor heater performance. The driver says on cold mornings the heater will blow cold during the drive to work in rush hour traffic. The car is not overheating and the air is coming from the ­correct ducts. Your first reaction might be to install a

mercedes benz water pump