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In order to check the operation of the valve of the PCV crankcase on Honda Accord 7, the engine must be started idling at idle and a hose between the valve and the intake manifold. A clicking sound must be heard. If there is no sound, then check the valve puck for cracks. You should also check that the valve and the crankcase hoses are off. If necessary, the valve should be cleaned with the carburettor cleaning fluid.