How can I Stop my PCV from sucking up oil?
Some rely on the PCV to not let air into the crankcase & that also seems to work as long as the PCV is working properly. Most put a K&N filter in place of the oil cap. Not really what you want to do. This will let un-metered air into the intake manifold & allow the PCV to suck as much air/oil as it can right on into the intake.
Where to put the PCV valve on a carb?
If you have a manifold port available that is convenient to the PCV location on the valve cover, use that one. If not, use whatever port that is most convenient to the PCV valve and requires the least amount of plumbing.
How do you remove a PCV valve from a cast?
In most casts the PCV valve can be removed by pulling it out of the valve cover grommet and then removing the rubber vacuum hose. Generally the PCV valve should be changed at every tune-up, but is often overlooked. Remove the PCV valve, and into the side that rests inside the valve cover to see the check valve.
When to replace the PCV filter and housing?
Replace the PCV valve and check the filter and housing after 500-1000 miles, continue on if the PCV valve is properly functioning or replacing it doesn’t solve the problem. Consider the vehicles routine maintenance schedule.
What does PCV do to a crank case?
PCV actually helps clear moisture from the crank case. PCV with filtered air source (air cleaner) and a catch can to an an air/oil separator in the line from the PVC valve to the vacuum port would seem to be the best solution for engine longevity AND the environment.
When does a PCV valve need to be closed?
The PCV valve prevents or reduces air flow when required to maintain good engine operating characteristics. At high vacuum (like idle) the valve is pulled closed and only a very small amount of air is allowed through. At wot there is no vacuum and the valve closes in the other direction.
In most casts the PCV valve can be removed by pulling it out of the valve cover grommet and then removing the rubber vacuum hose. Generally the PCV valve should be changed at every tune-up, but is often overlooked. Remove the PCV valve, and into the side that rests inside the valve cover to see the check valve.
Do you block off the PCV valve at idle?
If you have a high performance cam, and can’t get a good tune at idle, block off the PCV valve for a test. PCV effects on fuel injection vary by system. The FiTech is MAP and it doesn’t care about the “lost air”. As long as it’s relatively consistent to all cylinders it can be tuned for.