Fuel System Overview

The fuel injection system has a powertrain control module (PCM) controlled fuel injection pump that is mounted on top of the engine under the intake manifold. The pump is driven by the camshaft through 2 gears, one attached to the front of the camshaft and the other attached to the end of the pump shaft. These gears are the same size and have the same number of teeth. Therefore, the injection pump shaft turns at the same speed as the camshaft.