What are the symptoms of camshaft wear?

[LeahAnn]

Symptoms of camshaft wear mainly include: Increased engine noise due to camshaft damage. Disruption of the valve opening pattern. Reduced valve lift and shortened valve opening/closing overlap time, affecting the accuracy of valve timing. Causing insufficient air intake and incomplete exhaust emission, making it difficult to adjust the clearance between the valve stem end and the tappet, resulting in reduced vehicle power and increased fuel consumption. Here are some additional details: Introduction: The camshaft is the main driving component in the valve train, used to control the timing of exhaust valve opening and closing, and to drive other accessories such as the fuel pump, oil pump, and distributor. Position Classification: Camshaft positions can be categorized into three types: lower-mounted, middle-mounted, and upper-mounted. In lower-mounted valve trains, the camshaft is located in the crankcase; in middle-mounted valve trains, it is positioned in the upper part of the engine block; and in upper-mounted valve trains, it is situated on the cylinder head.