P.C.V. valves offer the advantages of reduced crankcase emission and increased fuel economy. However, if not maintained properly, they develop a number of malfunctions: starting problems, poor idling, and oil leaks. The cause is the development of sludge and contaminates in the oil filter. The author emphasizes that P.C.V. valves must be tested each time the vehicle is serviced to determine if the whole system is operating properly. The system must be thoroughly cleaned periodically to prevent the buildup of sludge. This conclusion is based on the author's experience with Post Office vehicles.
P.C.V. Valves
Sae Technical Papers
National West Coast Meeting ; 1967
01.02.1967
Aufsatz (Konferenz)
Englisch
Valves can replace compressed-air pressure valves
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