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1. Excessive oil consumption and leak. A bad PCV valve may have a leak, which will cause excessive oil consumption. In addition, you may also notice oil leaking through the seals and dripping on to the floor of your garage. This is because the pressure in the crankcase may increase when the PCV valve fails, so the oil is pushed out through the ...
The normal PCV airflow in the 2.8 is as follows: 1) Fresh air is taken from the intake system downstream of the air filter. 2) This air enters the crankcase through the fitting in the forward valve cover. 3) Air and other crankcase gases exit the crankcase through the fitting in the rear valve cover, via the PCV valve.
The PVC system is designed to relieve crankcase pressure and capture the oil fumes. Some have used small hose to vent the crankcase, when re-routing the PVC, and that caused crankcase pressure to build and oil leaks. Of course if you have a bad piston, and excessive crankcase pressure, you will also have oil leaks.
Aug 05, 2020 · Introduced in 2001, the LB7 is the OG 6.6L Duramax. This engine is the base platform that today’s 6.6L L5P Duramax is built off of. Spanning six different variations and nearly 20 years of production, the LB7 has certainly proved to be a reliable and durable platform.
Jan 23, 2007 · The little caps ontop of the valve covers come off...take them off. Clean out the one small pin hole. You probably will not see it because it will be clogged with oil. But you will know it is there because of a corrosponding broken hose that runs to it. Just use a scratch owl to clean it out.
Since 2017, we have been developing, supporting, and improving the original GM 1.4L Turbo PCV Fix Kit. With two tried and proven PCV fix kit designs (and a third in the works), we are constantly working to improve our products to provide value and a durable solutions to owners, retailers, and auto repair shops.