IS F (2008-2014) Discussion topics related to the IS F model

Those tubes connected to the intake pipe...

Thread Tools
 
Search this Thread
 
Old 04-18-15, 01:24 PM
  #1  
Compthis
Lead Lap
Thread Starter
iTrader: (1)
 
Compthis's Avatar
 
Join Date: Feb 2012
Location: Ontario
Posts: 643
Likes: 0
Received 1 Like on 1 Post
Default Those tubes connected to the intake pipe...

So I was just thinking now that track season in among us all, there are few of us who has mentioned how our cars blow smoke when on the track. For me, I find that I blow smoke just after an oil change as the oil is at its highest and only while tracking. I will blow smoke for a while and then it will stop for good. I recently replaced my air filter and when I removed those tubes from the intake, it appears to be oil on the aluminum outlets(JoeZ) and I mean really wet. Because I don't have my car in front of me and also because I'm not the most inclined on our engines, is it possible that those tubes are picking up oil when flying around a corner and spitting it back into the intake pipe? If I'm correct, like in my old Hondas, the tube comes off the head and circulates back to the intake, is it possible what I think is happening is really happening? And is there somewhere I could route the tubes to prevent the oil from entering the intake and dirtying my throttle body and what not?

Last edited by Compthis; 04-18-15 at 03:10 PM.
Old 04-18-15, 02:33 PM
  #2  
PDP180180
Lexus Champion
iTrader: (3)
 
PDP180180's Avatar
 
Join Date: Jan 2014
Location: UK
Posts: 1,601
Received 30 Likes on 28 Posts
Default

If you're right, maybe a catch can of sorts is what you need?

Hopefully someone with greater knowledge will enlighten us on what those pipes are, and whether they can be disconnected/re-routed.
Old 04-18-15, 02:48 PM
  #3  
jat0223
Instructor
iTrader: (1)
 
jat0223's Avatar
 
Join Date: Mar 2012
Location: NY
Posts: 768
Received 24 Likes on 22 Posts
Default

I thought in the other thread the problem was found to be the pcv valve or something simple like that
Old 04-18-15, 03:07 PM
  #4  
Compthis
Lead Lap
Thread Starter
iTrader: (1)
 
Compthis's Avatar
 
Join Date: Feb 2012
Location: Ontario
Posts: 643
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by jat0223
I thought in the other thread the problem was found to be the pcv valve or something simple like that
I'm not sure
Old 04-18-15, 06:40 PM
  #5  
MisterSkiz
Racer
iTrader: (2)
 
MisterSkiz's Avatar
 
Join Date: Nov 2011
Location: IL
Posts: 1,572
Received 90 Likes on 62 Posts
Default

I looked into a Catch Can for our car, but if I remember the internals of the engine actually already have a separator built in. I'll have to look in my manuals again.
Old 04-19-15, 11:13 PM
  #6  
lobuxracer
Tech Info Resource

iTrader: (2)
 
lobuxracer's Avatar
 
Join Date: Jul 2006
Location: Georgia
Posts: 22,207
Received 3,849 Likes on 2,334 Posts
Default

The tubes connected to the intake pipe provide filtered air to the engine for the PCV system. If oil is migrating into the intake from these tubes, it would likely be a problem with the PCV valve being worn out. Airflow should be from the intake tube into these two tubes into the valve covers, not the other way around. This air is pulled into the intake manifold through the PCV valve. This is valuable for two reasons: it burns any blowby gases from the crankcase instead of releasing it to atmosphere, and it reduces the air pressure inside the engine.
Old 04-20-15, 05:32 AM
  #7  
Compthis
Lead Lap
Thread Starter
iTrader: (1)
 
Compthis's Avatar
 
Join Date: Feb 2012
Location: Ontario
Posts: 643
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by lobuxracer
The tubes connected to the intake pipe provide filtered air to the engine for the PCV system. If oil is migrating into the intake from these tubes, it would likely be a problem with the PCV valve being worn out. Airflow should be from the intake tube into these two tubes into the valve covers, not the other way around. This air is pulled into the intake manifold through the PCV valve. This is valuable for two reasons: it burns any blowby gases from the crankcase instead of releasing it to atmosphere, and it reduces the air pressure inside the engine.
So maybe the oil I found on the tubes was oil from my K&N filter? I now run the factory filter.
Old 04-20-15, 05:42 AM
  #8  
PDP180180
Lexus Champion
iTrader: (3)
 
PDP180180's Avatar
 
Join Date: Jan 2014
Location: UK
Posts: 1,601
Received 30 Likes on 28 Posts
Default

Originally Posted by Compthis
So maybe the oil I found on the tubes was oil from my K&N filter? I now run the factory filter.
Guess it's a possibility?

Did you ever re-oil your K&N though? I'm running one on my car, but don't plan on re-oiling it. Will either buy another one, or go down a different route.

I don't see how you could get a lot of oil from the factory spec'd K&N panel filters??
Old 04-20-15, 06:08 AM
  #9  
jat0223
Instructor
iTrader: (1)
 
jat0223's Avatar
 
Join Date: Mar 2012
Location: NY
Posts: 768
Received 24 Likes on 22 Posts
Default

Originally Posted by Compthis
So maybe the oil I found on the tubes was oil from my K&N filter? I now run the factory filter.
Most likely the pcv valve isn't working properly. It's not that expensive and not hard to replace.
Old 04-20-15, 06:16 AM
  #10  
Compthis
Lead Lap
Thread Starter
iTrader: (1)
 
Compthis's Avatar
 
Join Date: Feb 2012
Location: Ontario
Posts: 643
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by PDP180180
Guess it's a possibility?

Did you ever re-oil your K&N though? I'm running one on my car, but don't plan on re-oiling it. Will either buy another one, or go down a different route.

I don't see how you could get a lot of oil from the factory spec'd K&N panel filters??
I did clean and re oil but never used it. I put is in a ziplock bag and installed a factory filter
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
nomz09
RC - 1st Gen (2015-present)
15
01-02-20 06:52 PM
NickawdIs
2Gen IS250 / IS350 / IS-F Classifieds (06-13)
19
12-13-13 04:08 PM
varithms
RX - 1st Gen (1999-2003)
14
07-08-13 05:21 PM
ShaneC
Performance
2
08-05-06 02:19 PM



Quick Reply: Those tubes connected to the intake pipe...



All times are GMT -7. The time now is 12:11 AM.