Jump to content

When to replace Air Surge Plenum Gaskets


campbeam

Recommended Posts

I have previously removed the air intake plenum when replacing the spark plugs but did not replace those plenum gaskets as they appeared to be in good condition etc.

Now 50,000 kms and a few years later, I have been trying to resolve an engine misfire and P0420 code. My 2006 Aurion now has an odometer of 258,000 kms.

After viewing a YouTube video about the P0420 error code, the recommendation was to replace these gaskets on the plastic air intake and to also check for any minor cracks. The gaskets compress over time and no longer seal resulting in vacuum leak and the error code. Actually I confirmed this when I reversed the existing plenum gaskets and temporarily got the P0430 code while the P0420 code still persisted. 

Height on the new plenum gaskets were measured at 7mm using both a micronometer and vernier calipers. Existing gaskets measured at 5.5mm except for one gasket which only measured 5mm in a section.

NewPlentiumGasket7mm.thumb.jpg.ae6d7fc50b5b72f441964a5e40f2f0f3.jpg

Following photos show the difference between the old and new gaskets when fitted.

OldGasket.thumb.jpg.b01166fbc4e41d7b2519f859652f6115.jpgNewFittedGaskets.thumb.jpg.60a3e050ca2f43a345e0d4acfe09b9b3.jpg

Overall, worthwhile to replace these plenum gaskets when replacing the spark plugs.

 

  • Like 1
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.




  • Join The Club

    Join the Toyota Owners Club and be part of the Community. It's FREE!

  • Latest Postings

    1. 1

      Central Locking works intermittently on rear passenger door

    2. 1

      1998 Toyota Celica Pricing idea

    3. 1

      1998 Toyota Celica Pricing idea

    4. 0

      Electrical issues with the 300 series

    5. 3

      Tyres

    6. 3

      Tyres

    7. 44

      Rav4 Transmission Problems?

    8. 2

      Rav4 2016 ZSA42R 2WD CVT failure

    9. 3

      Tyres

    10. 11

      FUEL WARNING MESSAGE

×
×
  • Create New...

Forums


News


Membership