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+--- Thread: Pcv valve dump tube? (/showthread.php?tid=7861)
Pcv valve dump tube? - BoostedW124 - 09-07-2017
Does it have purpose on w210 diesels? Can i vent it to just dump on ground? Losses or Benefits from this?
RE: Pcv valve dump tube? - EvoPeter - 09-08-2017
(09-07-2017, 07:29 PM)BoostedW124 Does it have purpose on w210 diesels? Can i vent it to just dump on ground? Losses or Benefits from this?
U talking about the crank vent?
RE: Pcv valve dump tube? - baldur - 09-08-2017
A diesel has no PCV valve, you must be talking about the vent on the valve cover. Yes you can just vent it but it will be messy as this air contains oil droplets. You should at least use a catch can. But beware of those eBay catch cans that have tiny ports. Mercedes uses 16mm hose for the breather and whatever you connect to it must not be much smaller than that.
RE: Pcv valve dump tube? - BoostedW124 - 09-17-2017
The vent on the valve cover. I mean on a gas its good to dump because of the spark plugs etc but a diesel doesnt care because it runs on oil anyways. Only benefit i see is no buildup in intake mani etc
RE: Pcv valve dump tube? - zeeman - 09-17-2017
(09-17-2017, 06:16 AM)BoostedW124 The vent on the valve cover. I mean on a gas its good to dump because of the spark plugs etc but a diesel doesnt care because it runs on oil anyways. Only benefit i see is no buildup in intake mani etc
Ideal catch can will have a sump below the out let to let the oil droplets settle with a drain at the bottom to drain. The OM 617 air cleaner has a similar sump that drains back into the engine.
RE: Pcv valve dump tube? - sassparilla_kid - 09-23-2017
I concur on the catch can setup, not only is it nicer looking than just a hose, you won't end up with everything covered in oil if you use one. Everything I service at work (from small John Deere tractors up to semi trucks) all have breather tubes with no oil catch and everything around them always ends up greasy
RE: Pcv valve dump tube? - AlanMcR - 09-25-2017
Just pipe it back into the intake. That is simple and the engine simply burns any oil vapor. The oil vapor is only a problem if you have an EGR that is mixing in soot, then you get the formation of crud on the inside of the intake system.