Jump to content
Do Not Sell My Personal Information


When Was Piston Ring Problem Sorted Out For 98- Avensis?


John Hunter
 Share

Recommended Posts

Hi, I have to change my Avensis '51 reg now - it's always had an oil consumption problem, due apparently to faulty design of piston rings which affected some Avensis....does anyone know what years of the '98 type (onwards) Avensis were involved? When did Toyota finally sort it out?

There is a '03 plate early type Avensis for sale which seems ok, but could the piston rings be a problem for that too?

Thankyou,

John.

Link to comment
Share on other sites

Hi John.

We need some more details first like petrol/diesel, engine size etc.

Regards Mike.

Link to comment
Share on other sites

Hi John,

If I understand your post correctly, you own a '51 plate mk1 Avensis vvti 1.8, which has the oil burning issue. To stop any confusion there were pre-vvti Avensis which used belt driven cam, leanburn (1.6-1.8), 3S-FE (2.0) engines. These engines never had the oil burning issue that effected the later 1ZZ-FE engines, like the one fitted to your car.

Toyota used the 1ZZ-FE engine on both the Mk1 and Mk2 Avensis, and some had the oil burning issue. The modification was during 2005-2006, and I have not heard of any 2006 onwards Mk2 Avensis having oil burning issues.

Not every 1ZZ-FE had burning issue - feed back from owners may confirm this.

Some have had the part engine changed.

A bit of history may help.

Konrad

  • Like 1
Link to comment
Share on other sites

Thanks Konrad and Mike so far,

The one I was thinking of buying is a 2003 petrol with a 1.8 vvti , apparently Toyota eventually did some extra drainage holes or something to help, but not sure when. Would a Toyota dealer be able to tell if the number plate was given to them?

Was the modification in 2005-2006 the extra holes or something more fundamental?

Link to comment
Share on other sites

One of the best experts on the forum is a member called Igormus. He has a great understanding of what caused the issue.

Extra oil holes were drilled into parts of the engine and modified piston rings were part of the modification. The oil capacity was increased, and the dipstick.

You seem to have done a bit of research on this subject already, so you are the right track.

When I found further information it will be posted.

  • Like 1
Link to comment
Share on other sites


I have did a bit of research and what I found is, the repair would be modified pistons and rings. The bores cannot be honed because the cylinders have a special coating.

I found a thread which discussed this very subject:

http://www.toyotaownersclub.com/forums/topic/144824-early-avensis-with-vvt-engine/page-2

The best Solution is to get a 2006 facelift or later. The prices have fallen.

Link to comment
Share on other sites

Thanks, it seems that a repair is out of the question or not economic...

From the service bulletin it mentions that the problem occurred for VIN numbers beginning with S,J or N before 2005. There is a way to get VIN numbers from a numberplate, so hoping to find an early Avensis without the problem I tried Autotrader which must have turned up 50 within a 40 mile radius.

Guess what, testing each no.plate showed all VINs began with S, (occasionally J). It seems there was a plant in Derbyshire where they are all made - so it's almost certain that all UK ones have the problem.

It doesn't always seem to bad at first, probably best to buy a low mileage, then overfill slightly with oil (according to the link) and keep overfilled, occasionally use premium unleaded which (it's been said) can clear contamination. Of course, nowadays probably better to buy another model!

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.

 Share




×
×
  • Create New...




Forums


News


Membership