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Excessive oil ending up in air box


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Bad design on the ccv that orifice tube at the back gets clogged, this causes high pressure in valve cover that can cause splash/blow of oil to breather line to box. Causing oil on air filter and in box.

Most people just try to keep the orifice tube clean.

 

What I did was Cruiser's tip's for cutting the fluted tubes down and drilling a hole in side.

 

I then removed the little flap on the back fluted tube. Bought a spectra grommet part number 5339 (3$ for box of two got at autozone). I then put valve cover back on and put a pcv valve in. I found to have a better fit, I used grinder to grind the slits on the grommet deeper. I used a universal pcv that came with 3 or 4 different connections. (2$ at autozone)

 

I connected the pcv with 3/8 fuel line to the manifold (3 feet 3$ Autozone). On the manifold I removed the old vacuum line and put on a quick release air nipple(1.50$ Autozone). it is 1/4. It is same size, just use some pipe tape to make sure a good seal. connected the 3/8 line to it and clamped both sides.

 

Now since I upgraded from box to the Spectre Performance Cold Air Intake Systems part number 9945. The front line hose that went from valve cover to box go's to the metal inlet on the spectra. I found using a inline filter from valve cover to spectra tubing works great. I used that filter just incase ever oil to spit up, I want my intake to stay clean . It is washable so easy to maintain. However since I have had this hooked up for 3 years I never once had to clean it out.

 

      Since I live in Texas and no smog on truck needed (exempt older then 24 years), I also deleted my EGR to keep my manifold cleaner. They say it will make engine run hotter however mine before rebuilt and after runs right at 205 degrees all day and year long, without EGR. *** Note if you compression test and seems low. put a little oil in thru spark plug opening then test again. if you get a noticeable or big jump in pressure you know you have rings not doing the job, could be carbon built up or flat out bad piston rings. Bad rings can also cause high valve cover pressure. One more thing that can cause high valve cover pressure is exhaust valve leaks.

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