Notices
LS - 4th Gen (2007-2017) Discussion topics related to the current flagship models LS460, LS460L and LS600H

Spark plug tube seal replacement?

Thread Tools
 
Search this Thread
 
Old May 1, 2019 | 08:39 AM
  #31  
elejes's Avatar
elejes
Thread Starter
Pit Crew
5 Year Member
 
Joined: Dec 2016
Posts: 104
Likes: 14
From: Texas
Default

Does anyone know if these two fuel pump long bolts can be removed in order to position the valve cover on and off without being in the way?

Reply
Old May 1, 2019 | 11:18 AM
  #32  
prichmon's Avatar
prichmon
Rookie
iTrader: (1)
 
Joined: Feb 2019
Posts: 49
Likes: 3
From: OH
Default

Yes they can be removed. You need E sockets, Female torx sockets or reverse torx bit sockets. A last resort is vise grips on the very end. I don't remember this size currently.

an example: https://www.homedepot.com/p/Husky-1-...13PC/206031060

OUTER SEAL:
If you pull the seal from the valvecover. I put the rtv between the metal ring of the outer seal to compress between the ring and valve cover. No external leaks.

INNER SEAL:
You have an internal leak from inside the valvecover to inside the spark plug tube.
The inner plastic seal I pushed in until it contacted the top metal tube. I used a flat blade screwdriver and worked around until the inner seal no longer moved. This of the inner seal as a lid and the metal tube id the cylinder like a pringles can. You are pushing the lid to contact the top of the can.
Reply
Old May 3, 2019 | 10:04 AM
  #33  
elejes's Avatar
elejes
Thread Starter
Pit Crew
5 Year Member
 
Joined: Dec 2016
Posts: 104
Likes: 14
From: Texas
Default

So which one from this pic do I need to push in?

Reply
Old May 3, 2019 | 10:13 AM
  #34  
prichmon's Avatar
prichmon
Rookie
iTrader: (1)
 
Joined: Feb 2019
Posts: 49
Likes: 3
From: OH
Default

Pull the coil pack completely out. Reach into the hole with your finger and pull the inner ring out. The inner piece is the one you will push all the way in against the metal tube. The inner piece comes out to allow room for a spark plug socket to easily fit into the bore.
Reply
Old May 3, 2019 | 10:19 AM
  #35  
prichmon's Avatar
prichmon
Rookie
iTrader: (1)
 
Joined: Feb 2019
Posts: 49
Likes: 3
From: OH
Default


Yopu are pulling the inner ring from the outer seal.
Reply
Old May 8, 2019 | 09:06 PM
  #36  
elejes's Avatar
elejes
Thread Starter
Pit Crew
5 Year Member
 
Joined: Dec 2016
Posts: 104
Likes: 14
From: Texas
Default

Ok, I have an update. The OEM spark plug seals that I ordered worked. No more oil in the spark plugs.

The problem now is that the car is still shuddering or vibrating at certain low speeds of acceleration. I’m dumbfounded as to what it can be.

The check engine light went on and I ran a diagnostic. It says replace bank 1 and 2, but these two codes have kinda always been an issue in the past way before this problem. The problem is I don’t think that would cause the car to act this way.
Many ideas as to what it can be from anyone?
Reply
Old May 8, 2019 | 09:08 PM
  #37  
elejes's Avatar
elejes
Thread Starter
Pit Crew
5 Year Member
 
Joined: Dec 2016
Posts: 104
Likes: 14
From: Texas
Default

I believe it said to replace the oxygen sensors.
Reply
Old May 9, 2019 | 02:14 AM
  #38  
jdanielca's Avatar
jdanielca
Pole Position
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2018
Posts: 2,422
Likes: 220
From: Ontario
Default

Originally Posted by elejes
I believe it said to replace the oxygen sensors.
If they are not expensive just get it done and then you are in the process of eliminating the possible causes.
Reply
Old May 9, 2019 | 05:29 AM
  #39  
elejes's Avatar
elejes
Thread Starter
Pit Crew
5 Year Member
 
Joined: Dec 2016
Posts: 104
Likes: 14
From: Texas
Default

But I don’t believe that would be the cause of the car vibrating/humming around the car. I kinda feel it in the cabin.
Reply
Old May 11, 2019 | 07:43 AM
  #40  
213374U's Avatar
213374U
Lexus Test Driver
 
Joined: Jan 2017
Posts: 946
Likes: 139
From: TX
Default

If the MAFs are bad the engine will not run correctly and will cause vibrations. Compound this with the fact that your car has 170K on it and the engine/trans mounts have likely never been changed, and you get what you're describing here.
Reply
Old May 11, 2019 | 08:10 AM
  #41  
elejes's Avatar
elejes
Thread Starter
Pit Crew
5 Year Member
 
Joined: Dec 2016
Posts: 104
Likes: 14
From: Texas
Default

Originally Posted by 213374U
If the MAFs are bad the engine will not run correctly and will cause vibrations. Compound this with the fact that your car has 170K on it and the engine/trans mounts have likely never been changed, and you get what you're describing here.
Car kinda feels at times as if I’m riding on a rough road.
i gapped my plugs at .044
those were the spark plug manufacturers (denso) recommendations. The manual recommends .040, would that be an issue or cause?
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
931UZFE
SC - 1st Gen (1992-2000)
13
Jun 20, 2017 06:33 AM
Jbthompson
LS - 3rd Gen (2001-2006)
6
Sep 9, 2015 08:00 PM
LexBrett
SC430 - 2nd Gen (2001-2010)
3
Sep 18, 2014 03:36 AM
Skggyy
IS - 1st Gen (2001-2005)
1
Dec 31, 2011 11:19 AM
2muchpsi
SC - 1st Gen (1992-2000)
1
Dec 1, 2007 07:47 PM




All times are GMT -7. The time now is 08:55 AM.