What's the matter with incorrect exhaust camshaft assembly?
1 Answers
In this case, it is necessary to inspect the engine's variable timing system, specifically whether the oil solenoid valve of the VANOS system is functioning properly. Check the solenoid valve's resistance value, wiring, and whether the solenoid valve spool is stuck. If stuck, try cleaning it! Additionally, inspect whether the exhaust camshaft position sensor is working correctly. If necessary, examine the electronic valve system, namely the VALVETRONIC system. Introduction to Camshaft: The camshaft is a component in a piston engine. Its function is to control the opening and closing actions of the valves. Although in a four-stroke engine, the camshaft's speed is half that of the crankshaft (in a two-stroke engine, the camshaft's speed is the same as the crankshaft), its speed is generally still very high, and it needs to withstand significant torque. Therefore, the design requires high strength and support for the camshaft, and its material is usually high-quality alloy steel or alloy steel. Camshaft Structure: The main body of the camshaft is a cylindrical rod approximately the same length as the cylinder group. It has several cams mounted on it to drive the valves. The camshaft is supported within the camshaft bearing holes via camshaft journals, so the number of camshaft journals is an important factor affecting the camshaft's support stiffness. If the camshaft's stiffness is insufficient, it may bend and deform during operation, affecting the valve timing.
