Victorhoo Neutral Newbie January 18, 2005 Share January 18, 2005 i think we should be refering to the ventilation hose cause if i am not wrong the PCV valve is for emission purpose right... ↡ Advertisement Link to post Share on other sites More sharing options...
Victorhoo Neutral Newbie January 18, 2005 Share January 18, 2005 correct? Link to post Share on other sites More sharing options...
Victorhoo Neutral Newbie January 18, 2005 Share January 18, 2005 see the pic i have post...i dun know whats you ride but roughly should be the smae right... Link to post Share on other sites More sharing options...
Kklim Supercharged January 18, 2005 Author Share January 18, 2005 Where does the crankcase filter go on this pix: [inline PCV_valve.gif] Link to post Share on other sites More sharing options...
Victorhoo Neutral Newbie January 18, 2005 Share January 18, 2005 (edited) here Edited January 18, 2005 by Victorhoo Link to post Share on other sites More sharing options...
Kklim Supercharged January 18, 2005 Author Share January 18, 2005 OIC! Thanks. Now got to locate the throttle body end of the hose on my Matrix, where it's probably bunched up under the big black piece of plastic where the wipers are. Link to post Share on other sites More sharing options...
Victorhoo Neutral Newbie January 18, 2005 Share January 18, 2005 (edited) hey...we are all still learning Edited January 18, 2005 by Victorhoo Link to post Share on other sites More sharing options...
Yeobh 4th Gear January 18, 2005 Share January 18, 2005 PCV = Positive Crankcase Ventilation . Under the clean air regulation, vehicles must have system to reciculate the blow-by gas in the crankcase back to the combustion chambers. The blow-by gases are mainly unburnt carbon monoxide and other health damaging particles/ gases and therefore should not be relese as raw. Envirovmently , it is not wise to allow the gases to be released to the atmosphere even via a high class filter. Legally you may be in trouble when your ride undergo the bi-annual inspection. Technically by removing the PCV, you are actually allowing the crankcase pressure reduce to atmospheric level - which is not good. The whole ideal is to allow pressure of few psi to be built within the engine crakcase is to prevent dirts and small particles from being suck into the system by the rotating cranckase shaft and pistons. The PCV fuction is a act a a one-way check valve. Link to post Share on other sites More sharing options...
Multi 3rd Gear January 18, 2005 Share January 18, 2005 What about the other one...don't know what you call. That one leading to the airhose, can that be remove and replace with a filter like what is mention in this thread? pls advice? Link to post Share on other sites More sharing options...
Yeobh 4th Gear January 19, 2005 Share January 19, 2005 Hope the schematic is right. The hose to air intake side is indicated as allowing free flow of air. If this is the case then all the crankcase oil laden vapour will coat & damage the throttle hot wire. If this hose allow free of both fresh air and crankcase vapour- how is the PCV come into operation withiout pressurise vapour ? Link to post Share on other sites More sharing options...
Victorhoo Neutral Newbie January 20, 2005 Share January 20, 2005 (edited) crankcase vent filter also called the "breather".... The reason for this extra "breather" is the result of negative/over-positive pressure in the crankcase which causes air to be pulled/release from somewhere... car's before were using to suck/release air via the engine oil cap(open system)..having the "breather" connected to the air hose is the improved version(closed system).... now apply to all fuel injection car...go look into your engine bay.... by having it it helps to eliminates the harmful blow by to return back into the system..better yet is to have another aka "oil catch tank" at the the PCV valve location...hence even cleaner engine..http://bernardembden.com/xjs/pcvfilter/ to seal off the crankcase completely and in the case of the PCV valve failure will cause a build up of fumes and it will cause engine problems. Hence the need for a second "backup".... Contingency plan... thus, by installing the breather, it is just a "cheaper" and easier way of trying to achieve cleaner engine..more ideally, mod should be done at both breather and PCV valve location.. of course..there are 2 side to the story...some ppl swears by it..other dismmiss it...but if its really bad for your car...i dun think companies like K&N will be introducing into their product line-uphttp://www.knfilters.com/vent.htm...instead it is consider as an after market mod.... of course i would not know if by doing so it will meet singapore emission standards..dun have the equipment and dun know how to test Edited January 20, 2005 by Victorhoo Link to post Share on other sites More sharing options...
Victorhoo Neutral Newbie January 20, 2005 Share January 20, 2005 it can be replaced of course..just that dun know if it will meet emission standards...cause blow-by gases can and will escape into the atmoshpere Link to post Share on other sites More sharing options...
Kklim Supercharged January 20, 2005 Author Share January 20, 2005 The schematic's accurate. Pulled it off a Hyundai tech support site. Link to post Share on other sites More sharing options...
Kklim Supercharged January 20, 2005 Author Share January 20, 2005 Read that oil catch tank is more for those who redline a lot. In my case, I though since I have the breather, I'll just stick it in. BTW, found out yesterday that on the Matrix, the crankcase end of the hose is at the back near cylinder 4; need to remove the plastic cover to see it. Thanks. Will probably route it somewhere such that whatever oil accumulates in the breather doesn't drip onto hot engine parts or rubber hoses. Link to post Share on other sites More sharing options...
Victorhoo Neutral Newbie January 20, 2005 Share January 20, 2005 great..do post a photo once you have done that... Link to post Share on other sites More sharing options...
Kklim Supercharged January 20, 2005 Author Share January 20, 2005 Will do. DIY oil catch tank using fuel filter http://www.geocities.com/ezwong2002/oilcatchtank.JPG Makes sense actually. Just remove cap and use syringe to suck out whatever oil is there. Link to post Share on other sites More sharing options...
Victorhoo Neutral Newbie January 20, 2005 Share January 20, 2005 ya hor..actually can DIY..want to do it?haha...n "chio" Link to post Share on other sites More sharing options...
Hattee Neutral Newbie January 22, 2005 Share January 22, 2005 Filter like this has been around for more than 15 years. During those day, it supposed to cover the engine vent after replacing stock filter with CAI. Not an ideal design since it's quickly clogged up with lark from engine oil fumes. Because pressure inside crankcase is usually higher than ambient. The best is still original routing that allows engine oil fumes in the crankcase escape to the air intake and be burn off. What's the main purpose of the Crankcase filter? Pls advice? ↡ Advertisement Link to post Share on other sites More sharing options...
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