Spoolin4Ever
15+ Year Contributor
- 1,142
- 14
- Apr 24, 2005
-
Moses Lake,
Washington
I was going thru my PCV setup because of some smoking issues, and I got the situation taken care of. I also added a catch can filter.
It was interesting the way things played out.
First off, the rubber hose from my PCV valve was a little bit longer then needed, and this was causing it to get kinked/pinched a little bit. I cut it shorter, and put it back on, and it was no longer kinked. This made a difference in spool up time, transient boost response, and I could even hear the turbo and BOV more.
The PCV Valve itslef was good. I had boughten one from Schucks, all they had was a Fram for $3.99. It was bad right out of the container! I left the original one on there, took back the other for a refund.
Well it still smoked.
Next I installed the catch can (fuel filter). Weird thing is that, this slowed down the spool up quite a bit. I also noticed that the hose in between the catch can and the intake was way longer then needed.
Next I cut that hose so it was shorter. That was when I also noticed the coupler the holds my intake to the turbo was loose (the metal clamp comes loose every few months). This allows unmetered (dirty) air right into the turbo. I tightened that down.
Now it no longer smokes. Was it smoking because unmetered air was letting it run too lean, causing knock, then ratard timing causing it to run rich?
Thing is though, the car has been using and leaking oil as if too high of crank case pressure (that is what led me to the PCV inspection and repair).
My point is I think having the hoses shorter helps improve spool up and tranisent boost response, but I'm not 100% sure cause I also had the loose fitting where the intake connects to the trubo.
I've noticed in pics of other people's engine bays here; some people have long hoses going to and from the valve cover, BOV, etc.. I would think that is going to slow down your spool up time (?).
It was interesting the way things played out.
First off, the rubber hose from my PCV valve was a little bit longer then needed, and this was causing it to get kinked/pinched a little bit. I cut it shorter, and put it back on, and it was no longer kinked. This made a difference in spool up time, transient boost response, and I could even hear the turbo and BOV more.
The PCV Valve itslef was good. I had boughten one from Schucks, all they had was a Fram for $3.99. It was bad right out of the container! I left the original one on there, took back the other for a refund.
Well it still smoked.
Next I installed the catch can (fuel filter). Weird thing is that, this slowed down the spool up quite a bit. I also noticed that the hose in between the catch can and the intake was way longer then needed.
Next I cut that hose so it was shorter. That was when I also noticed the coupler the holds my intake to the turbo was loose (the metal clamp comes loose every few months). This allows unmetered (dirty) air right into the turbo. I tightened that down.
Now it no longer smokes. Was it smoking because unmetered air was letting it run too lean, causing knock, then ratard timing causing it to run rich?
Thing is though, the car has been using and leaking oil as if too high of crank case pressure (that is what led me to the PCV inspection and repair).
My point is I think having the hoses shorter helps improve spool up and tranisent boost response, but I'm not 100% sure cause I also had the loose fitting where the intake connects to the trubo.
I've noticed in pics of other people's engine bays here; some people have long hoses going to and from the valve cover, BOV, etc.. I would think that is going to slow down your spool up time (?).
