|
All,
PCV is Positive Crankcase Ventilation and the valve
is the Polution Control Valve. Is a bit confusing. Kinda like a sign that calls
a teller machine an ATM Machine. The M is machine (Automatic Teller Machine
Machine) Maybe they should have called the valve a PRV (Polution Reduction
Valve)?
According to MoPar, 'An inoperative PCV system will
cause rough idle, sludge, oil dilution and air polution'. They recommend
replacing the valve instead of cleaning it. If the valve is stuck in the wrong
position, the engine is getting a vacuum leak of a sort. The valve cannot
control the amount of vacuum the engine is using for ventilation.
One other caution from MoPar is: 'We should also
remember that additional air is permitted to enter the intake manifold whenever
the PCV system is used. The carburetor used with this system is calibrated to
compensate for the air, plus the blowby gasses that enter the intake manifold
from the crankcase.' The carbs on my Commando engine are later model AFBs that
have the inlet for the PCV hose on the base.
Larry
| 
Back to the Home of the Forward Look Network