Where is the timing mark for the 465 engine camshaft?
2 Answers
The timing mark for the Chang'an Star 465 camshaft is located directly below the arrow on the metal plate behind the timing gear. Below are the detailed specifications of the camshaft sensor: 1. Function: The camshaft sensor transmits the operational status of the cylinders to the ECU (Electronic Control Unit) to facilitate sequential fuel injection control, ignition timing control, and knock control. 2. Symptoms of failure: If the vehicle experiences difficulties in starting, unstable idling, engine shaking, poor acceleration, increased fuel consumption, or a persistently illuminated malfunction indicator light, it may indicate a faulty camshaft sensor. 3. Working principle: The camshaft position sensor detects the position and angle of the camshaft to determine the top dead center position of the first cylinder piston during compression. During startup, the engine ECU uses signals from the camshaft position sensor and the crankshaft position sensor to identify the position and stroke of each cylinder piston, enabling precise control of fuel injection and ignition sequences.
With years of experience in car repair, I've frequently worked with the 465 engine. The camshaft timing mark is located on its sprocket, usually as a small dot or groove, positioned at the front of the engine near the timing belt or chain. You must align it with the crankshaft mark to ensure accurate timing. Otherwise, valve operation will be uncoordinated, causing engine noise, starting difficulties, or even piston-to-valve contact leading to major repairs. In practice, removing the front cover reveals it—use a flashlight or your fingers to locate the mark. Always disconnect the battery before working to prevent short circuits. Also, don’t overlook belt aging; if loose or worn, even aligned marks can slip. I’ve fixed many such issues for customers—key points are careful alignment and regular maintenance checks.
