BMW valve covers and intake manifolds made of plastic are susceptible to warpage and gasket failure.
Visual inspection is critical. Any sign of movement laterally is grounds for replacement.
In the case of a direct fuel injector where the tip is exposed to the combustion event, carbon can stick to the nozzle and cause a bad spray pattern, because carbon searches for other carbon.
A DCT transmission uses the gearing principles of a manual transmission.
Fasteners act much the same as a spring due to the physics of stretch and rebound.
Customers generally look to superchargers for the instant throttle response, not fuel economy.
Variable-length intake runners change the length of the intake passages depending on engine speed and load.
Before removing the driveshaft, check for play in the yoke and slip joint. If the u-joints are failing, you should be able to see movement in the shaft as you apply leverage.
Doug Kaufman discusses some simple things your customers can do to ensure the longest life of their turbochargers. Sponsored by MAHLE.
One of the most basic procedures when replacing a fuel pump – and often the most overlooked – is inspecting the fuel tank.
Andrew Markel discusses how to diagnose a fuel pump, and the importance of replacing the entire module if the pump is failing. Sponsored by Auto Value and Bumper to Bumper.
You may soon see a vehicle that has both direct fuel injection and port fuel injection. It could be a Toyota, Ford or other make. It can be confusing because for a long time we were told that direct fuel injection was better than port fuel injection. To get the best power and economy from an engine, some engineers realized that both injection systems could be used on the same engine.