Good Price Diesel Engine Parts VE Pump Cam Disk 096230-0580 Cam Plate

Whether the cam disc needs to be replaced can be judged from the engine operating conditions, the physical state of the components and the fault codes. The following are specific methods:

Judgment from the engine operating conditions
Starting difficulties: The cam disc controls the opening and closing of the valves. If it fails, it may cause inaccurate valve opening and closing time, making it difficult to start the engine. If the camshaft position sensor signal is inaccurate, the engine control unit cannot accurately control the ignition and fuel injection, and it will take multiple ignitions to start, or even fail to start.

Power reduction: Wear or damage to the cam disc will affect the normal opening and closing of the valves, resulting in insufficient intake and unsmooth exhaust, insufficient engine combustion, and a significant decrease in power output. The vehicle is underpowered when accelerating and climbing, the speed is slow, and the engine speed is difficult to increase.

Unstable idling: Under normal circumstances, the engine speed is stable when idling. If there is a problem with the cam disc, the valve movement is abnormal, and the working conditions of each cylinder are unbalanced, the engine idle speed will be severely shaken, and the tachometer pointer will fluctuate greatly.

Abnormal engine noise: Cam disc failure may produce abnormal noise. For example, after the camshaft is worn, the gap between the cam and the valve tappet and other components increases, and a "da da da" metal knocking sound will appear. Especially when the engine is cold started or accelerated, this abnormal sound may be more obvious.

Judging from the physical state of the component
Appearance inspection: The cam disc can be removed for visual inspection to check whether there is obvious wear, cracks, deformation or damage. If the cam surface is peeled, scratched, unevenly worn, etc., it will affect its normal operation and need to be replaced in time.

Measure the size of the camshaft: Use professional measuring tools such as calipers and micrometers to measure key dimensions such as the diameter of the camshaft and the height of the cam. If the measured value exceeds the tolerance range specified by the manufacturer, it means that the camshaft has been worn excessively, which will affect the lift and opening and closing time of the valve, and replacement should be considered.

Check the axial clearance and radial clearance of the camshaft: Use tools such as dial indicators to check the axial clearance and radial clearance of the camshaft. If the gap is too large, the camshaft will move or jump during operation, affecting the normal operation of the valve. Generally speaking, if the axial gap exceeds 0.15mm and the radial gap exceeds 0.05mm, it needs to be checked and replaced.

Judge with the help of fault diagnosis equipment
Read the fault code: Use the car fault diagnosis instrument to read the fault code stored in the engine control unit. If there are fault codes related to the camshaft position sensor, camshaft phase, etc., such as P0016 (crankshaft position-camshaft position relationship fault), P0340 (camshaft position sensor circuit fault), etc., it means that there may be problems with the cam disc or its related systems, and further inspection and judgment are required to determine whether it needs to be replaced.

Check the data flow: Check the engine data flow through the diagnostic instrument to observe whether the signal data of the camshaft position sensor is normal, and whether the actual position of the camshaft is consistent with the theoretical position. If the data has obvious deviations or instability, it may be that the cam disc is faulty, affecting the signal output of the sensor.

In addition, the vehicle mileage is also a reference factor. Generally speaking, when the vehicle mileage reaches more than 100,000 kilometers, the cam disc may be severely worn, and it is necessary to check its working condition and consider whether to replace it based on the actual situation.