Clean Crankcase Breather Cap And Positive Crankcase Ventilation System

Remove the breather cap and wash it in solvent. To clean the 8-cylinder engine valve or system, remove the positive crankcase ventilation valve, exhaust tube, and connections. Clean the valve and exhaust in clean carburetor solvent, and dry them with compressed air. Clean the rubber hose connections with a low volatility petroleum base solvent, and dry them with compressed air. Refer to Group 1 of this supplement for special instructions on servicing 6-cylinder engine system.