Nick M said:
Yep.
Do as Sawbladz suggests and learn a little about all the things on cars, and maybe you will stop throwing them away.
I guess a catch can is better than dumping it on the ground.
edit: The PCV system is one of the greatest additions to the engine that has been devolped.
dam strait nick, though you shouldn't have left them blind as to why.
engine blow by is a nasty thing. there are acid's and minerals in the blow by that will ruin the properties of good oil, which for us is rod knock..
most car's use a pcv system with a check valve of some sort, so if the engine back fire's it does not ignite the fumes in the crankcase (lol) well our car's do not have this little rattle valve as ford calls it..
the way our system is designed, the vacum is greater at the tb @ idle then the accordian tube (because the throttle closes 100% and uses the idle speed control to idle which sucks from the accordian tube. )
while cruising the vacum in the accordian is roughly equal to that of the tb, but either way the blow by is still being recirculated back into the combustion process..
while boosting, the pressure at the tb, and the blow by push at each other, while the accordian tube has a huge vaccume sucking the blow by fumes and some boost from the tb pcv port.
because how this work's, this is one of the biggest reasons to have an oily inlet to the turbo. also oily sludge in your vaccume lines.
like pointed out breathers dont remove the fumes from blow by but more so trap the water vapor and blow by , by products in the crank case.
whats nice about a catch can, is you can seal off the small boost leak on the throttle body, and still suck out all the crank case fumes, and the best benifit is if your catch can is working properly and is not full, your intake should stay oil free, unless you have bad turbo seals.
