So anyways, what is this thing. I can pull it out of the valve cover. Im guessing oil should not be coming up through there. If im right where can I buy a replacement.
Thanks,
Josh
[This message has been edited by FieroJosh1993 (edited 10-21-2013).]
According to the parts manual, that's the crankcase vent valve or the equivalent of the PCV valve. If it's plugged, the pressure will build in the crankcase from combustion gasses blowing past the piston rings and will try to escape anywhere it can like the oil pan seal, valve cover seal, etc. You should be able to get a new one easily at any parts store.
I just did some searching online and all I could find are the things called breather filters. is that the same thing just the modern version?? This is what came up when i searched for crankcase vent valve.
My mistake... the component you showed in your photo isn't the equivalent of the PCV valve on the four cylinder engine. It's probably just an oil filter of sorts to prevent oil vapour from condensing in the lines. Nevertheless, the problem you're suffering is still likely a plugged PCV valve, which is in the line that goes from that vent to the carburettor. Here's link to what you probably need: http://www.fierostore.com/P...px?s=52164&d=236&p=1
You can test your old PCV valve by unplugging it and making sure it rattles when you shake it. You should also only be able to blow through it one way.
It could be blow-by caused by bad rings. As Top Notch asked, any oil in the air cleaner? A quick check for blow-by is to removed the oil filler cap and see if it is puffing air. It should be neutral or a slight vacuum.
I had the same problem in my Oldsmobuick station wagon. As the blow by from worn rings increases, the Duke will progressively blow more and more oil through this 'fresh air' filter into the intake. Eventually it will soak your air filter. A stuck PCV valve could cause this if it is not caused by a worn engine and PCV valves are cheap so do that first. In my case, it was a death knell from the Duke, it failed spectacularly soon after.
In this picture you can see the PCV valve next to the oil cap. The intake routes over/sandwiches the 'fresh air' filter on the other side, and as the engine blows hot oil vapor into the intake the throttlebody sucks it towards the air filter.
[This message has been edited by carbon (edited 10-22-2013).]
Sorry its taken so long to answer. School takes up a ton of time. As of right now there is just a little bit of oil on the air filter. I can smell it out the exhaust. There is a small amount of oil in the air filter/ intake housing. I really hope its not rings. I only have 77620 miles on the car.
Ok so I just did the quick test that was suggested. I didn't feel a puffing sensation. It was a steady sensation of air. But I could tell if it was blowing out of the engine or sucking in. I put my hand over the fill hole and I felt a small amount of vacuum pulling on my hand. Not like if u put your hand on a vacuum cleaner, it wasn't that strong. Is there any other tests I can do to try and rule out worn rings?
Ok so I just did the quick test that was suggested. I didn't feel a puffing sensation. It was a steady sensation of air. But I could tell if it was blowing out of the engine or sucking in. I put my hand over the fill hole and I felt a small amount of vacuum pulling on my hand. Not like if u put your hand on a vacuum cleaner, it wasn't that strong. Is there any other tests I can do to try and rule out worn rings?
New PCV valve and like commerce says, clean it up and go. My worn ring problem was fairly obvious. They don't have to necessarily be worn, they could be stuck from sitting a long time as well. It really depends on the history of the car.
