Toyota Avalon and Camry 1MZ plug and valve cover job


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Even though I swore at a young age never to be seen in, much less own a generic import sedan, here we are.

I bought this 95 Avalon at auction with the nose totaled. While it was meant to be a winter beater, it has grown on me simply based on it’s ease of repair. This job required few tools, none of which were unusual. This was a welcome break from the maddening array of crap required to do a similar job on my SHOs.

So the local shop must have told you that this job costs $600+ because ‘That whole durned intake thingy has to come off’. He is right, the intake has to come off. However, if you do the job yourself you can take that $600 you saved and buy something fun for yourself or the missus.

First, get the Haynes Toyota Camry Automotive Repair Manual
( and any other car you may own ) and a set of Gear Wrenches with the floppy heads. These wrenches are the best ever, replace socket sets and save time and effort getting into weirdly located nuts and bolts. When you dish out your $129 for the wrench set, comfort you wife by telling her you are saving $600 on the job and you will have the proper tools to do future jobs. Be careful though, if you use that reasoning with the missus, she will in fact ask you to do other car related jobs. You have been warned.

This page will show pretty much step by step directions, but you must use common sense and look for wires, plugs or other things to disconnect in case I miss them. I have included many pictures called ‘reference pictures’. These will show how things look before you tear them apart, so you have a guide to put them back together. Use common sense. I am not responsible if you break something or hurt yourself or others.

Test Generic
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20 Responses to Toyota Avalon and Camry 1MZ plug and valve cover job

  1. I must say this is a great article i enjoyed reading it keep the good work :)

  2. Adam says:

    Great job. Exactly what I was looking for. Great pics and tips!

  3. michael says:

    You did a helluva job there, fella! Great pics and a good article. Keep up the good work.

  4. lon says:

    Great just Great.

  5. JR says:

    Wow, the ‘big boy’ publishers could sure take a lesson here. How to do it illustrated, on the most common problem of this otherwise excellent engine. Kudos!

  6. Beau says:

    Thank you so much! This was extremely helpful!!!!!!

  7. Donald says:

    This is simply and excellent guide. Now I’m really looking forward to take off my valve covers on my 1999 Avalon.

  8. JB says:

    Great DIY! Could you do one for the timing belt now!!!?

  9. Phil says:

    Fantastic! Thank you. The repair manuals are so unhelpful when it comes to the tricky nuances of getting to these impossible to reach places.

  10. D. Motwani says:

    Excellent, this is what I was looking for as well. Just got a ’95 and same condition as the pics show. Thank ya.

  11. Did the plugs come out easy after being in the engine for ? years. My 2004 Camry V6 will be needing plugs soon and I am concerned that the threads in the head will come out with the plug. I want to believe that Toyota used some kind of anti-sieze but who knows. Very good presentation. PS Why did you take the valve covers off?

  12. admin says:

    A: Yes.
    B: they were leaking.

  13. James says:

    Thank you so much for this DIY.
    I now have a visual guide to help me do this job.
    Do you have any other DIY for this car and/or engine?

  14. admin says:

    Not yet, nothing else has broken.

  15. bob holmes says:

    I am blown away! I did front cover yesterday and then wondered how I was going to move that wire bundle. Your efforts are invaluable!!!!!!!!!!!
    Today I attack the back cover armed w/ the info you provided.
    God bless you!

  16. admin says:

    yep

  17. David says:

    Great DIY. Besides the new valve cover gaskets and the plenum gasket, did you replace any other gaskets, or just reuse the old?

  18. admin says:

    Just the VC ones, I re-used everything else.

  19. ChildTito says:

    Very greatful for your attention to detail; I’ve been wanting to do this job for a while now.

  20. admin says:

    No problem… If anything else ever needs work on this car I’ll post it the repair here too!

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