Where are the timing marks on motor and cams?

Timing marks on a motor and camshaft are typically located on the front of the engine and the camshaft itself. On the crankshaft, a mark is usually found on the harmonic balancer or timing gear, while the camshaft may have marks or notches on the sprocket or gear. These marks align during assembly to ensure correct timing between the crankshaft and camshaft, which is crucial for proper engine operation. It's important to consult the specific service manual for the vehicle, as the location and method of marking can vary by engine design.