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Sun Aug 20, 2006 9:58 pm
I believe vsv means vacuum switching valve.
(at red arrow)
Just wanna point out that there is a missing nipple. Theres suppose to be two nipples.
Mon Aug 21, 2006 12:56 am
Just want to clarify that it is a TVV (Thermal Vacuum Valve), not VSV.
(It opens and closes base on temperature, not vacuum)
and I think I should add these pics to this write up.
I adopt David's (Goldfish) method.
Here are some illustrations.Warning: read the disclaimer below
1) Study and understand the system first!
2) Remove the charcoal canister, unplug all the hoses from the canister.
Make sure you know where it comes from and where it goes to.
Plug the hose going to TVV using a small screw.
I use a nylon fitting to connect the hose from the gas tank
to the hose that connect to the check valve
3) There is a check valve that is plugged to the fender wall.
This is the one that connect to the bottom of the canister to let fresh air from fender well IN
4) Switch the direction of the check valve.
We will need to let the air OUT in order to release the pressure from the tank.
5) Plug the check valve back to the fender wall.
Connect the hose from the gas tank to the hose that lead to check valve.
In the future, I might add a small inline plastic fuel filter (from lawn mower?)
Right now, I just can't find a correct size (so I don't have to use a reducer)Disclaimer: Removing charcoal canister and/or modification of EVAP system are dangerous and may be illegal depending on where you live and use of the car. Do at your own risk. If your car caught on fire, you get caught, fined, or you and/or your passengers die or injure, etc.. do not blame me. I will not be held responsible for anything resulting from following above modification.
Do at your own risk!
Mon Aug 21, 2006 3:50 pm
Gary, you're such a show off...
Tue Aug 22, 2006 2:01 am
Cool, thanks for adding the information about the check valve Gary. Something I overlooked! With all of this, the write up should be pretty much complete.
Oh, and for those considering the catch can to be mounted where the charcoal canister was...I'm not sure if this is true or not, but I was told (by instructions too) to have the catch can mounted as high as possible in the engine bay. I'll see if I can look into this more. So, mounting it down there where the canister was may not be ideal. However, mounting it higher for those who don't have cruise control, this would be perfect.
Wed Aug 23, 2006 9:33 am
toayoztan wrote:Oh, and for those considering the catch can to be mounted where the charcoal canister was...I'm not sure if this is true or not, but I was told (by instructions too) to have the catch can mounted as high as possible in the engine bay. I'll see if I can look into this more. So, mounting it down there where the canister was may not be ideal. However, mounting it higher for those who don't have cruise control, this would be perfect.
why's this true? doesn't oil as well as any other liquid drip DOWNwards?
Wed Aug 23, 2006 4:51 pm
I think IIRC it dealt with the idea of pulling/sucking oil out of the system. So, if the outlet from the motor to the catch can is higher, then you are right, oil would tend to go downward, towards the catch can.
I'm not sure if this is true. I just know I try to keep the catch can higher or at the same level of wherever the line is connected to the motor.
Wed Aug 23, 2006 8:44 pm
I have had my catch can in this position for many months now. I cannot say that I have had any problems with it. It has almost no oil in it but I have only driven my car ~1200km this year and the engine is pretty healthy (apart from valves). I also worked on the theory that gravity cannot hurt it. I thought it made sense that gravity helps pull oil droplets and vapour down toward the catch can and then helps keep it there while the vacuum from the intake pulls the air back out again. The vacuum will still be pulling no matter what direction it is pulling towards.
I certainly have had no oil whatsoever in the hoses coming from the can and no oil in the intake before the turbo anywhere.
Sat Sep 16, 2006 7:03 pm
The fuel filter fits pretty well in there.
Thu Feb 01, 2007 5:15 pm
Sun Feb 18, 2007 1:24 am
Sorry, but what's the point of filtering air that you're just letting vent to atmosphere?
Sun Feb 18, 2007 1:40 am
In case that the check valve failed, you will not have dust entering the fuel tank.
Mon Feb 19, 2007 3:43 pm
its the same for 165's right?
Mon Mar 12, 2007 10:33 pm
where did you get that filter from?
check this out...
Tue Mar 25, 2008 5:20 pm
What would happen if a line is run directly from the tank vent line, to the vacumme tube on the top of the throttle body?
My car is having a cold start issue since the rebuild. I removed the Charcol canister while i rebuilt the motor.
I plugged the vacumme tube on the TB with some 4mm vacumme hose and a bolt.
Well, today i tried unplugging that tube just to see what would happen while it idled... there was zero change. the car reved fine as normal too.
So, im just curious what would happen if the tank vent bypassed the charcol canister, and went straight to the TB?
Thu Mar 27, 2008 9:38 pm
I also have a question.
I accidentally pulled the line off of the TVV, but it is still on the charcoal canister.
Does anyone have a picture illustrating where this is meant to plug into? Also I'm unclear as to what is done with this line after the canister is removed?
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