Go Back   Club Lexus Forums > Lexus Model Forums > RX Models > RX - First Generation
Sign in using an external account
Register Forgot Password?

Valve Cover Gasket Replacement - how hard?

Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 12-05-13, 07:42 PM   #31
UofODucks
Driver School Candidate
Trader Score: (0)
 
Join Date: Sep 2013
Location: OH
Posts: 4
Default Valve cover torque sequence

I will be replacing the valve cover gaskets this weekend. The thread about the bolt torque was helpful... 65in lbs... 5.75ft lbs. But I have not fond the tightening sequence anywhere. Dose anyone know what it is? Thanks
This ad is not displayed to registered members.
Register your free account today and become a member on Club Lexus!
UofODucks is offline   Reply With Quote
Old 12-05-13, 08:13 PM   #32
JAB
Lead Lap
Trader Score: (0)
 
Join Date: Jan 2006
Location: Virginia
Posts: 586
Default

I don't think a 'tightening sequence' is particularly necessary, but if you insist, start in the middle and work your way to the ends, alternating as you go.
__________________
JAB
Fairfax, VA
1999 RX300
200K, AWD
Original Owner
JAB is offline   Reply With Quote
Old 12-09-13, 11:59 AM   #33
UofODucks
Driver School Candidate
Trader Score: (0)
 
Join Date: Sep 2013
Location: OH
Posts: 4
Default RX300 Valve cover gasket replacement, info

I have been experiencing a variety of codes. I have replaced the bank one A/F sensor. That code went away. Ran good for awhile then started to get misfire codes on bank one and bank 2, cylinders 1, 2, 3, 4, 5, 6. (P0301, P0302, P0303,P0304, P0305, P0306). Do to the high miles on my RX, I decided to check the front and back CAT's, because the exhaust seemed to be trapped. All three CAT's were plugged and disintegrated to different degrees. So I replaced them. While replacing the back CAT, I notice that the back valve cover was not sealed to the head. After replacing the CAT's the even misfire codes went away, but continued with the odd codes. So here I am... I can't properly trouble shoot with such an obvious problem. I am assuming that the coils are not properly seated to the plugs, thus the misfire. However, do to the PAIN that it is getting to everything behind the intake, I will be changing the knock sensor, plugs, coils (front to back), coolant bi-pass hose, and PVC grommet and valve at the same time as I replace the valve cover gasket and plug seals. I tried to post a link from the thread below, that I found, but I failed. The video posted on this thread has been pulled from youtube. I was... well fortunate to see the video before it was pulled. The Toyota Tech does remove the wipers and the tray under the wipers, and gains access to some of the connectors and bolts behind the throttle body, a little easier. Even though the link below is referencing the task performed on a Camry, It was good to get eyes on some of the hidden components. I will be performing this job in the coming days on my RX300. I hope that it doesn't take more than 6 hours.THREAD: (Club Lexus Forums > Lexus Model Forums > ES Models > ES300 and ES330 sub heading V6 valve cover gasket replacement.). Note: When A job is a time consuming pain in the ***, it is worth it to pay extra for OEM parts.
UofODucks is offline   Reply With Quote
Old 12-09-13, 04:27 PM   #34
JAB
Lead Lap
Trader Score: (0)
 
Join Date: Jan 2006
Location: Virginia
Posts: 586
Default

Ducks: Where in Ohio are you? (I'm from Chagrin Falls.) I don't understand how the valve cover could come "unsealed" from the head, unless someone tried to work on it and gave up.
__________________
JAB
Fairfax, VA
1999 RX300
200K, AWD
Original Owner
JAB is offline   Reply With Quote
Old 12-30-13, 11:11 AM   #35
hotrodgirl
Driver School Candidate
Trader Score: (0)
 
Join Date: Dec 2013
Location: CA
Posts: 9
Default

Quote:
Originally Posted by hypervish View Post
Front valve cover is a piece of cake, 30 minute job. Rear valve cover is a bit more work, requires taking off the intake. Although I believe Salim thinks it may be possible to do the rear valve cover by only removing the windshield cowl, but no one has attempted that yet (i don't think anyways).

Spark Plugs should be done at the same time, as well as changing the PCV.

BTW: Congrats on 210k miles!
Definitely start with wiper arms, wiper linkage/motor and get that cowl and support bar outta the way. Makes life soooo much easier and doesn't take but 10 min to do.
hotrodgirl is offline   Reply With Quote
Old 01-02-14, 07:48 PM   #36
aznlapin
Rookie
Trader Score: (0)
 
aznlapin's Avatar
 
Join Date: Nov 2013
Location: MA
Posts: 58
Default

I recently inherited a '02 AWD from my mother. It's been neglected for quite a bit since my mother is completely auto-ignorant. It has had only 2-4 oil changes done in the past 70,000 miles

So, right now I'm planning to to pull the front valve cover to see how bad it is inside. Trying to keep my fingers crossed after hearing that the 1mz-fe is a sludge monster.

I saw this thread for replacing the valve cover gasket on an ES300 with the same engine as well as been thru the knock sensor & valve cover gasket DIY on this forum. I want to pull just the front cover for now since the rear is a major PITA. What I want to know are two things:

1) Do I need to drain the coolant and/or oil to pull off the FRONT (Bank 2) valve cover?
I ask this specifically because I changed both within the past 1000miles.

2) What is the part number for the gasket set I should use? I found 3 on rockauto:
- FEL-PRO Part # VS50588R
- VICTOR REINZ Part # VS50406
- BECK/ARNLEY Part # 0361613
(any better and/or cheaper ones would be great too!)

PS: any extra advice is greatly appreciated! thanks!!

Last edited by aznlapin; 01-02-14 at 07:52 PM.. Reason: additional info
aznlapin is offline   Reply With Quote
Old 01-02-14, 08:13 PM   #37
salimshah
Moderator
Trader Score: (0)
 
Join Date: Apr 2001
Location: Austin, TX
Posts: 8,096
Default

Quote:
Originally Posted by aznlapin View Post
I recently inherited a '02 AWD from my mother. It's been neglected for quite a bit since my mother is completely auto-ignorant. It has had only 2-4 oil changes done in the past 70,000 miles

So, right now I'm planning to to pull the front valve cover to see how bad it is inside. Trying to keep my fingers crossed after hearing that the 1mz-fe is a sludge monster.

I saw this thread for replacing the valve cover gasket on an ES300 with the same engine as well as been thru the knock sensor & valve cover gasket DIY on this forum. I want to pull just the front cover for now since the rear is a major PITA. What I want to know are two things:

1) Do I need to drain the coolant and/or oil to pull off the FRONT (Bank 2) valve cover?
I ask this specifically because I changed both within the past 1000miles.

2) What is the part number for the gasket set I should use? I found 3 on rockauto:
- FEL-PRO Part # VS50588R
- VICTOR REINZ Part # VS50406
- BECK/ARNLEY Part # 0361613
(any better and/or cheaper ones would be great too!)

PS: any extra advice is greatly appreciated! thanks!!
Dont give the motor a shock and dont go about chasing ghosts.

If there is a problem only then diagnose and fix.

Start by doing fluid change [drain and fill only and no flush].

Salim
salimshah is offline   Reply With Quote
Old 01-02-14, 08:20 PM   #38
aznlapin
Rookie
Trader Score: (0)
 
aznlapin's Avatar
 
Join Date: Nov 2013
Location: MA
Posts: 58
Default

I wouldn't be worried normally if it didn't go from full to empty on the oil dipstick in 600 miles. Adding a quart brought it back to just above half way between the marks. Possible oil consumption with the M1 5w30? Don't think it's a leak, haven't spotted anything on the ground yet.

It's also putting out a lot of white smoke when I start it up. Not sure if this is due to the cold weather or I'm confusing it with blue smoke.

Already drained/filled PSF, coolant, oil and tranny was replaced not too long ago. Doing rear differential and transfer case in the next few days.
aznlapin is offline   Reply With Quote
Old 01-03-14, 01:03 AM   #39
JAB
Lead Lap
Trader Score: (0)
 
Join Date: Jan 2006
Location: Virginia
Posts: 586
Default

You do not need to drain oil or coolant in order to change either valve cover gasket.
__________________
JAB
Fairfax, VA
1999 RX300
200K, AWD
Original Owner
JAB is offline   Reply With Quote
Old 01-03-14, 10:53 AM   #40
aznlapin
Rookie
Trader Score: (0)
 
aznlapin's Avatar
 
Join Date: Nov 2013
Location: MA
Posts: 58
Default

Quote:
Originally Posted by JAB View Post
You do not need to drain oil or coolant in order to change either valve cover gasket.
Thanks!
What about the gasket P/N? Haven't checked what it costs at the dealer yet, will look into that to compare...
aznlapin is offline   Reply With Quote
Old 01-03-14, 11:14 AM   #41
JAB
Lead Lap
Trader Score: (0)
 
Join Date: Jan 2006
Location: Virginia
Posts: 586
Default

I got mine at RockAuto; a set included both front and rear valve cover gaskets (I don't recall whether they are identical or not) and 6 spark plug tube seals. Not terribly expensive and certainly not worth spending a lot of time to comparison shop. If your RX has a significant number of miles on it you will find it dificult if not impossible to remove the old spark plug tube seals.
__________________
JAB
Fairfax, VA
1999 RX300
200K, AWD
Original Owner
JAB is offline   Reply With Quote
Old 01-03-14, 01:29 PM   #42
salimshah
Moderator
Trader Score: (0)
 
Join Date: Apr 2001
Location: Austin, TX
Posts: 8,096
Default

Quote:
Originally Posted by JAB View Post
I got mine at RockAuto; a set included both front and rear valve cover gaskets (I don't recall whether they are identical or not) and 6 spark plug tube seals. Not terribly expensive and certainly not worth spending a lot of time to comparison shop. If your RX has a significant number of miles on it you will find it dificult if not impossible to remove the old spark plug tube seals.
JAB:

Did you end up replacing the tubes or left the old one's in place? I heard that it is royal pain in Lexus vehicles.

Salim
salimshah is offline   Reply With Quote
Old 01-03-14, 01:34 PM   #43
JAB
Lead Lap
Trader Score: (0)
 
Join Date: Jan 2006
Location: Virginia
Posts: 586
Default

Salim: What I ended up doing was replacing the entire rear valve cover with the 'new' version that accepts a screw-in PCV valve rather than the 'press-fit' plastic elbow of old. The new valve cover included pre-installed spark plug tube seals. I tried to change the seals in the front valve cover but gave up and reinstalled the valve cover with the old seals still in place. I figure that if they ever do leak it will be a simple enough job to replace the front valve cover with a new assembly.
__________________
JAB
Fairfax, VA
1999 RX300
200K, AWD
Original Owner
JAB is offline   Reply With Quote
Old 07-29-14, 06:04 PM   #44
tim73
Driver School Candidate
Trader Score: (0)
 
Join Date: Jul 2014
Location: GA
Posts: 1
Default

I did this yesterday on a 2000 rx300, it was a little bit of a job. My advice, to anybody doing this, is to make sure that the rear valve cover gasket, doesnt roll, when you install it. Mine did that, and i didnt notice it until, i started the engine...and oil was just flowing out. The second time i did it, I made sure to add a little rtv, to help teh gasket stick to the valve cover. Then make sure they dont scrape over the cam gears and slip out of the valve cover groove(Thats what happened the first time). Plus, when I was done witht eh rear, I took an inspection mirror, and made sure the back gasket was fully seated. I also added a 5/16's washer to each valve cover bolt, that helped the bolt catch a little bit better.

Youll also need a e6 reverse torx bit(To remove the front wiring loom, theres two e6 studs) And finally youll need a 8mm hex socket to remove the two hex bolts. Also, i didnt drain the coolant system. Nor did i remove any of the coolant hoses from the throttle body(I just moved it to the side after I removed the three bolts holding it to the intake). I did take off the top radiator hose, but only a little bit of coolant leaked.

Also, 4 of the 6 spark plug tubes were filled with oil. Which was making the car run rough. This seemed to fix it, owner said it was running really good today.

Last edited by tim73; 07-29-14 at 06:14 PM..
tim73 is offline   Reply With Quote
Old 07-29-14, 07:46 PM   #45
salimshah
Moderator
Trader Score: (0)
 
Join Date: Apr 2001
Location: Austin, TX
Posts: 8,096
Default

Quote:
Originally Posted by tim73 View Post
I did this yesterday on a 2000 rx300, it was a little bit of a job.
...snip edit ,,, snip
This seemed to fix it, owner said it was running really good today.

Did you do this as a favor or provided service for money? Either way it does not matter. We welcome you to Club Lexus.


Salim
salimshah is offline   Reply With Quote
Old 07-29-14, 07:46 PM
 
 
 
 
Reply

Tags
1999, 2000, 2001, 350, cover, gasket, lexus, ls430, mileage, rear, replace, replacement, rx, rx300, valve

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
How to Change Valve Cover Gasket 98 GS-300 Mick2 GS - Second Generation 6 09-06-13 09:17 AM
IS300 valve cover gasket change justYnG Maintenance 1 04-03-13 08:39 PM
Valve cover gasket NEWONE1 SC 430 20 10-30-12 08:26 AM
Leaking Valve Cover? With Picture Rippaflow GS - Second Generation 9 03-23-09 06:12 PM
valve cover gasket job goldlexus9 ES300 and ES330 5 10-30-08 12:57 PM

All times are GMT -7. The time now is 07:32 PM.

Join ClubLexus
Advertising


Copyright © 2000-2008 Internet Brands, Inc. All Rights Reserved
Privacy Policy | Disclaimer | Terms of Use | JOBS


Get all contact info