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99 LS400 Valve Cover Gaskets

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Old 05-19-11, 12:01 PM   #1
ktranne
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Default 99 LS400 Valve Cover Gaskets

Hello. I have a 99 LS400 with 145k miles.

Saw oil leak on and around valve cover gaskets. Had to add 1/2 quart engine oil (been 2k miles since oil change).

beside 2 gaskets and 8 spark plug tubes, what else I need to purchase?

anyone have part numbers for them I can use?

Thanks.
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Old 05-19-11, 12:16 PM   #2
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I can't see anything regarding the "spark plug tubes" even on the full rebuilt parts list.
The valve cover gaskets are
Gasket Cylinder head Cover 11213-50030
Gasket Cylinder head Cover no.2 11214-50010
Both priced at $29.80
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Old 05-19-11, 12:55 PM   #3
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For my '91, part # 11193-15010 is for the "spark plug tube gaskets", which is probably what you mean.
There are also # 90210-07001 Valve Cover Washers (16 of them - one for each screw).
Again, these are for my '91, your year's parts may be different.

If you're buying a lot of gaskets like this, it is usually a lot cheaper to buy an aftermarket kit that includes all of the above. Gaskets are one thing that I would trust aftermarket parts to do well.

Whatever you do, be sure to torque the valve covers carefully.
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Old 05-19-11, 01:20 PM   #4
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did you try retorquing the valve cover nut bolts? I retighten mine and it works. Try that first and see if it work depending how bad your leak, if it really bad...move forward replacing them. The driver side is a lot easier to get to than the passenger side gasket ( a little more involve) but not too difficult.
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Old 05-19-11, 02:55 PM   #5
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When i did the job on my 90, i replaced the valve cover gaskets, 8 sparkplug tubes rings, washers, what i didn't do was to re-seal the half moon on the head by the firewall.
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Old 05-19-11, 05:05 PM   #6
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Check rockauto.com for the valve cover gasket. Their sets include the 8 spark plug tubes and the 16 grommets. They have a Beck/Arnley kit for $47 or a Fel-pro for $37, + shipping of course.
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Old 05-19-11, 05:48 PM   #7
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May as well get a PCV valve too, and a throttle body gasket, because it will have to come off. Depending on the state of the vacuum lines, a few of those may need replacing as well. And don't forget the Form In Place Gasket for around the camshaft bearings.
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Old 05-19-11, 08:17 PM   #8
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Quote:
Originally Posted by deanshark View Post
Check rockauto.com for the valve cover gasket. Their sets include the 8 spark plug tubes and the 16 grommets. They have a Beck/Arnley kit for $47 or a Fel-pro for $37, + shipping of course.
i will stay away from fel-pro, i used them before they start sipping oil on the spark plug tube gasket(not tight enough like OEM). For 99 OEM spark plug tube gasket is part# 11193-70010(you need 8), left valve cover gasket part# 11214-50011, right is part#11213-50030 and the washer 90210-07001(you need 16) i will also get the FIPG part# 00295-00103 for the half moon thing in the back of the head(they are 4 half moon, take them out, remove the old FIPG, then apply a new one).
The vacuum lines will be another problem because at this time they a hard as a rock. you will know this after the work, also the ignition coil harness clips will break easy.

Last edited by bornpeace; 05-19-11 at 08:22 PM..
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Old 07-16-11, 06:35 AM   #9
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so is it a must to replace the sparkplug tube gaskets or is it jus like a while you have the covers off task? I didnt think these valvecover gaskets were gunna be a pain like ppl make it out to be. Im not scared of maintenance by any means but ppl on the internet make me want to take my car to a shop

Last edited by pinkyson21; 07-16-11 at 06:36 AM.. Reason: typo
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Old 07-16-11, 07:09 AM   #10
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Quote:
Originally Posted by pinkyson21 View Post
so is it a must to replace the sparkplug tube gaskets or is it jus like a while you have the covers off task? I didnt think these valvecover gaskets were gunna be a pain like ppl make it out to be. Im not scared of maintenance by any means but ppl on the internet make me want to take my car to a shop
It's more of a "might as well" thing. I suggest to do the spark plug tubes b/c when I did my valve cover gaskets, about 15K miles ago, I didn't do my tubes. They were fine then but now they're leaking. If I did them then, I wouldn't need to take the covers back off now. The gaskets aren't too hard to change, this tutorial will help you out; http://www.lexls.com/tutorials/engine/valvecover.html
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Old 07-16-11, 08:48 AM   #11
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I have a set of 8 oem spark plug tube seals, $40 mailed in the 48 states.
direct email is: billydpowell@hotmail.com

I also have a set of 8 Denso PK20R11 plugs $50
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Old 07-16-11, 08:48 AM
 
 
 
 
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