95 E300D my 1st attempt to route the engine vapors away the intake valve area
I plugged the old small holes in the top of the intake with black Permatex silicone and topped the glue with a round headed thumbtack that fit perfectly. Yesterday I installed a new rubber elbow feeding the black gizmo. I trimmed a little of the bottom of the new rubber elbow in an attempt to make it easier to remove years from now. I then connected 1/2 inch piping to the outlet. To do this I used 5/8" heater hose. Tight fit on both but made it tighter with cable ties. If it leaks I'll install hose clamps. If the plastic pluming doesn't hold up I'll replace it with 1/2" copper.
I drilled out the thin metal on the top of the valve cover near the rubber plenum from the filter box. The hole is just beneath the black plastic cover that bolts to the top of the intake cover.
If any of you decide to do it this way, remove the top of the filter box along with the rubber plenum. This will allow an almost perfect angle to drill the hole into the valve cover.
You should place a metal plate on top to protect the fuel injection lines. The aluminum can grab your drill bit and suck it into your lines. I used a 4" metal piece that was bent 90 degrees and rested in front of the injection lines and on top of them. Glad I did, the drill bit jumped forward twice.
I didn't like the look of the plastic so I ended up wrapping it in plastic electrical tape, the old style cloth tape is not readily available at autoparts stores anymore.
I plan to add a catch can to collect the oil and will possibly tap into the filter box to suck the fumes ( hopefully without the oil ) back into the intake path.
Trying to decide whether to go below the filter or above it and what size hole to make into the filter housing.
When I started the car after doing the shut valve today, I did notice an odor and could feel vapors puffing out the end of my plumbing. Probably won't wait too long to add a catch can. Ran too little to see how much oil might drip out. When I cleaned the outside of the black gizmo and blew into it, there didn't seem to be any resistance to air flow.
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