Valve cover casket
11-19-21, 04:29 AM
#2
Pole Position
Hello,
Here is a pretty good guide on how to replace Valve Cover Gaskets in your car. While it involves removing a lot of parts, it is not necessarily difficult to do. While at it, you will also need Intake Plenum Gasket and new PCV valve, they are known to get jammed open, or worse, closed; it is also a good idea to replace spark plugs, maybe wires if it wasn't done before, since you will have a good access, a set of vacuum hoses can also be useful just in case, since they tend to become brittle.
Hope this helps and best of luck!
Here is a pretty good guide on how to replace Valve Cover Gaskets in your car. While it involves removing a lot of parts, it is not necessarily difficult to do. While at it, you will also need Intake Plenum Gasket and new PCV valve, they are known to get jammed open, or worse, closed; it is also a good idea to replace spark plugs, maybe wires if it wasn't done before, since you will have a good access, a set of vacuum hoses can also be useful just in case, since they tend to become brittle.
Hope this helps and best of luck!
11-24-21, 06:29 AM
#5
If you are doing both front and rear I cannot recommend 14mm & 12mm ratchet type box end wrenches for the bolts at the back of the intake manifold. Not certain yours has the same support stays as mine, but on my 2002 the 14mm had no alternative, the 12mm could be done with a socket but tougher.
11-24-21, 08:22 AM
#6
Lexus Champion
https://www.japan-parts.eu/lexus/us/...acuum-piping/2
https://www.japan-parts.eu/lexus/us/...acuum-piping/1
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Ekul61 (11-24-21)
11-24-21, 10:15 PM
#7
I haven't had any broken vacuum hoses yet, the really thin ones seem to be made out of very durable rubber (maybe silicone?) and those are the ones you'll encounter the most around the intake plenum. So I wouldn't jump into replacing all those vacuum lines just yet.
The only issues I found is some cracks around the ends of the hose on the bigger rubber hoses like the one from the charcoal canister to the air filter box or the one connecting the PCV valve with the intake plenum. You can replace those as you go so they can be done later.
1998 currently at 303k miles.
The only issues I found is some cracks around the ends of the hose on the bigger rubber hoses like the one from the charcoal canister to the air filter box or the one connecting the PCV valve with the intake plenum. You can replace those as you go so they can be done later.
1998 currently at 303k miles.
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das1960 (11-29-21)
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11-29-21, 09:20 AM
#8
For silly reference, Toyota/Lexus make their vacuum lines out of EPDM rubber - a synthetic rubber of long standing. I know of roofs put on in the 1970's made of commercial grade EPDM that are still healthy with little maintenance. Tough stuff.
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LeX2K (11-29-21)
11-29-21, 09:37 AM
#9
Lexus Champion
12-03-21, 05:25 PM
#10
We have a series 80 Land Cruiser all the small lines are marked "EPDM" it gets a bit of attention on the Cruiser site. As to roofing, a friend is in the business, he will not sell EPDM because the industry prefers things with a 15 not 50 year life. If you have a flat roof you want the 60 mil grade, not the 90 and not the 45.
My other car is an Audi, those vacuum lines are made of Pringle's potato chip batter, and are about as tough
My other car is an Audi, those vacuum lines are made of Pringle's potato chip batter, and are about as tough
12-03-21, 07:30 PM
#11
Lexus Champion
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das1960 (12-06-21)
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