GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

Where to add seafoam?

Thread Tools
 
Search this Thread
 
Old 06-13-06, 06:40 PM
  #1  
Eric00GS3
Driver
Thread Starter
 
Eric00GS3's Avatar
 
Join Date: Apr 2006
Location: San Diego, CA
Posts: 129
Likes: 0
Received 0 Likes on 0 Posts
Default Where to add seafoam?

I'm trying to give my GS a seafoam treatment. Does anyone know which vacuum line I should use to suck up the seafoam?
Old 06-13-06, 09:16 PM
  #2  
LEXUS_KID
Lexus Champion
iTrader: (4)
 
LEXUS_KID's Avatar
 
Join Date: Dec 2004
Location: IN THE POKER ROOM!!!!
Posts: 10,823
Likes: 0
Received 1 Like on 1 Post
Default

Pour it right into the Gas tank
Old 06-13-06, 10:01 PM
  #3  
Eric00GS3
Driver
Thread Starter
 
Eric00GS3's Avatar
 
Join Date: Apr 2006
Location: San Diego, CA
Posts: 129
Likes: 0
Received 0 Likes on 0 Posts
Default

OK thanks, but what if I want to clean the intake. Which hose that's connected to the intake can I suck up the seafoam with. PCV hose, EVAP hose, Air Assist Hose, Vaccum hose, etc.
Old 06-13-06, 10:03 PM
  #4  
Dx3
Lexus Fanatic
iTrader: (13)
 
Dx3's Avatar
 
Join Date: Jul 2003
Location: Tulsa, Oklahoma
Posts: 10,681
Received 7 Likes on 7 Posts
Default

This is very popular in the SC but I somewhat recall someone in a GS doing it and it going badly. It could be because I am drunk though!! I would search the GS section for seafoam first though.

Jonny
Old 06-13-06, 10:42 PM
  #5  
GSteg
Rookie
iTrader: (15)
 
GSteg's Avatar
 
Join Date: Jul 2005
Location: CA
Posts: 16,017
Likes: 0
Received 78 Likes on 60 Posts
Default

use it through the PCV. Let it suck in slowly. Dont emerge the PCV down into the cup of seafoam otherwise you will flood your engine. Let the seafoam mist into the PCV (suckin air and seafoam at the same time).

All you need is 1/3 of a pint. It gained me 1 mpg or so on heavy city driving.
Old 06-14-06, 05:35 AM
  #6  
DASHOCKER
Lexus Fanatic
iTrader: (2)
 
DASHOCKER's Avatar
 
Join Date: Jul 2004
Location: NYC
Posts: 12,191
Likes: 0
Received 10 Likes on 10 Posts
Default

I would not pour seafoam in the car period. Get a bilstein flush instead since the gunk is dissolved and vacuumed from the motor while the car is off.
Old 06-14-06, 05:01 PM
  #7  
Eric00GS3
Driver
Thread Starter
 
Eric00GS3's Avatar
 
Join Date: Apr 2006
Location: San Diego, CA
Posts: 129
Likes: 0
Received 0 Likes on 0 Posts
Default

Anyone else have any experience adding Seafoam to a GS?
Old 06-14-06, 05:29 PM
  #8  
lexmenow
Lexus Champion
 
lexmenow's Avatar
 
Join Date: Apr 2006
Location: georgia
Posts: 1,679
Likes: 0
Received 0 Likes on 0 Posts
Default

I put it in on my 2k GS400. I put it in my oil and got a lot of black stuff. I also put it in my PCV valve but got no smoke . Finally I mixed it with my gas. Got better throttle response and better mpg. Please make note that after searching I found that someone said you needed to change the spark plugs after sucking seafom through PCV valve. I did this and have had no signs of trouble for a month.
Old 06-14-06, 05:34 PM
  #9  
GSteg
Rookie
iTrader: (15)
 
GSteg's Avatar
 
Join Date: Jul 2005
Location: CA
Posts: 16,017
Likes: 0
Received 78 Likes on 60 Posts
Default

you dont need to change the spark plugs after seafoam. Not sure why anyone would suggest that, unless the plugs are in need for replacement already.
Old 06-14-06, 06:27 PM
  #10  
#1gs300
Lead Lap
iTrader: (4)
 
#1gs300's Avatar
 
Join Date: May 2006
Location: PHILLY
Posts: 619
Likes: 0
Received 2 Likes on 2 Posts
Default

Why not just get ur car motor vac, got mine done monday morning.
Old 06-14-06, 07:05 PM
  #11  
lexmenow
Lexus Champion
 
lexmenow's Avatar
 
Join Date: Apr 2006
Location: georgia
Posts: 1,679
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by GSteg
you dont need to change the spark plugs after seafoam. Not sure why anyone would suggest that, unless the plugs are in need for replacement already.
They need replacement so I did it before I changed them anyway.
Old 06-14-06, 07:06 PM
  #12  
lexmenow
Lexus Champion
 
lexmenow's Avatar
 
Join Date: Apr 2006
Location: georgia
Posts: 1,679
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by #1gs300
Why not just get ur car motor vac, got mine done monday morning.
What is that?
Old 06-15-06, 08:52 AM
  #13  
Adam2562
Lexus Champion
iTrader: (2)
 
Adam2562's Avatar
 
Join Date: Mar 2005
Location: Maryland
Posts: 1,869
Likes: 0
Received 0 Likes on 0 Posts
Default

what is seafoam??????????
Old 06-15-06, 09:02 AM
  #14  
Eric00GS3
Driver
Thread Starter
 
Eric00GS3's Avatar
 
Join Date: Apr 2006
Location: San Diego, CA
Posts: 129
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Adam2562
what is seafoam??????????
Here's some info on seafoam from the ES forum. https://www.clublexus.com/forums/sho...hlight=seafoam
Old 06-17-06, 08:21 AM
  #15  
Eric00GS3
Driver
Thread Starter
 
Eric00GS3's Avatar
 
Join Date: Apr 2006
Location: San Diego, CA
Posts: 129
Likes: 0
Received 0 Likes on 0 Posts
Default

So, I did the seafoam treatment last night on my GS throught the PCV valve. Just popped out the PCV and sucked the seafoam up while mixing it with air as suggested. Turned off the engine. Waited 30 minutes, started engine, and opened the throttle. It smoked out of the tail pipe like crazy for about 3-4 miniutes. At a 165K it must have made a ton of carbon build up. Drove it around the block afterwards and it feels great, no problems. Some suggest getting a oil change right after because some of the carbon that is cleaned gets into the oil, so I'm changing the oil today. Thanks to those for their help!

Last edited by Eric00GS3; 06-18-06 at 07:57 AM. Reason: missing step


Quick Reply: Where to add seafoam?



All times are GMT -7. The time now is 03:18 AM.