$2.99 Oil Catch Can

[firebob]

Ok sure.

But both hoses do not do the same thing.

The set up is to pull in air form before the throttle body through the crankcase and dump it back into the intake. The hose that dumps back into the intake has the check valve. When you let off the gas the throttle body closes down most of the way and the motor would suck air though the crank case and burn off the fumes in the crank case.

But with only one you will only get blow by and a bit of air from the change in the temp as the car heats up and cools down out of that hose. I didn’t see that you had removed the other hose.

[yaris-me]

Originally Posted by firebob

Ok sure.

But both hoses do not do the same thing.

The set up is to pull in air form before the throttle body through the crankcase and dump it back into the intake. The hose that dumps back into the intake has the check valve. When you let off the gas the throttle body closes down most of the way and the motor would suck air though the crank case and burn off the fumes in the crank case.

But with only one you will only get blow by and a bit of air from the change in the temp as the car heats up and cools down out of that hose. I didn’t see that you had removed the other hose.

I'm confused. The hose from the PCV goes to the intake manifold after the throttle body and there is another hose that goes after the MAF. What is the point in having two? After throttle shut down wouldn't it just circulate air through the hose to the manifold?

[eTiMaGo]

Originally Posted by yaris-me

I'm confused. The hose from the PCV goes to the intake manifold after the throttle body and there is another hose that goes after the MAF. What is the point in having two? After throttle shut down wouldn't it just circulate air through the hose to the manifold?

vacuum sucks, simple as that. There is a difference in pressure on the ends of each hose, so the PCV system works as a kind of restricted bypass

[firebob]

There are 2 hoses.

#1 goes form the PCV valve that is screwed into the crank case to the intake.
#2 goes form the air intake to the crank case.

In the red box is #1. The black fitting is the PCV valve.
In the green box is where #2 should be. With a stock car this would only see clean air.

[Tamago]

Originally Posted by firebob

There are 2 hoses.

#1 goes form the PCV valve that is screwed into the crank case to the intake.
#2 goes form the air intake to the crank case.

In the red box is #1. The black fitting is the PCV valve.
In the green box is where #2 should be. With a stock car this would only see clean air.

where did you get this information FORM?

[firebob]

I guess I can’t spell after 11:30 at night after being up all day and drinking a few.

[marcus]

Originally Posted by firebob

There are 2 hoses.

#1 goes form the PCV valve that is screwed into the crank case to the intake.
#2 goes form the air intake to the crank case.

In the red box is #1. The black fitting is the PCV valve.
In the green box is where #2 should be. With a stock car this would only see clean air.

so does this mean we only need one filter which is on the red box.

[eTiMaGo]

Originally Posted by firebob

Ok sure.

But both hoses do not do the same thing.

The set up is to pull in air form before the throttle body through the crankcase and dump it back into the intake. The hose that dumps back into the intake has the check valve. When you let off the gas the throttle body closes down most of the way and the motor would suck air though the crank case and burn off the fumes in the crank case.

But with only one you will only get blow by and a bit of air from the change in the temp as the car heats up and cools down out of that hose. I didn’t see that you had removed the other hose.

+1, mine was originally set up like this too, on the atmospheric pressure hose, and never caught a drop of oil. It's gotta be on the vacuum hose connected to where your stock manifold used to be, as the vacuum in there (off-boost now, obviously) is what will suck the fumes through the system. Otherwise you're just filtering clean air.