M&T VMBO KB Practice Questions - Netherlands VMBO KB Mobiliteit En Transport - CSPE And Schoolexamen Exam

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During a compression test on a four-stroke petrol verbrandingsmotor (four-stroke engine), low compression is measured in cylinder 2. Adding a small quantity of engine oil to cylinder 2 temporarily increases the compression reading. What is the most likely cause of the compression loss?

Worn piston rings (zuigerveren) or cylinder wall wear in cylinder 2 A burnt intake valve (inlaatklep) preventing complete sealing A leaking cylinder head gasket (cilinderkoppakking) between cylinder 2 and 3 A stuck hydraulic valve lifter (klepstoter) holding the exhaust valve open

Correct Answer:

Worn piston rings (zuigerveren) or cylinder wall wear in cylinder 2

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