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ZR engine ticking in low rpm range when hot

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6.5K views 11 replies 4 participants last post by  Dado100  
#1 ·
Hello everyone, I decided to join Toyota Nation trying to get help with my problem. Sorry for possibly rough English, I come from Czech Republic.

I own Toyota Auris E18, 2017 with 1ZR-FAE engine (sold in Europe, manufactured in GB) wich is practically the same as Corolla/Scion iM with 2ZR-FAE (1.6 vs 1.8) sold in North America. The car was bought asi 3 year old with 57k km on dash directly from Toyota official dealership.

My problem is ticking (rattling?) noise when my car hits somewhere around 1500rpm. It is not noticeable when car started cold but fairly noticeable when hot - with hood open you cant miss it, sometimes when surroundings are quiet you can hear it behind the wheel too. I attached youtube link for better understanding what I am talking about.


To solve this as for now I tried following:
  • oil change - car serviced fully by Toyota, in 60k km changed to 5w30 then in 62k km back to 0w20; didnt solve
  • all filters change - air, oil, pollen; didnt solve
  • car was running on 100octane premium gasoline only, then tried three full tanks on regular 95, wich also didnt solve the issue.

I visited four mechanics, all working in big toyota service center (formerly authorized by manufacturer). Three of them found that sound usual, fourth says it is not normal and sounds like hydraulic valve lifter and never seen it before in those engines. To my ear it sounds rather like something poorly tightened rather than mechanical issue inside engine.

Thank you ;)
 
#3 ·
Do you mean oil filter? Or some other? 1ZR-FAE and 2ZR-FAE are identical engines, with 1.8 2ZR having different stroke.

the engine has Valvematic, wich is I believe successor to VVTi. First oil change in my ownership was with 7500km on the oil, filter clean. Second - to revert back to 0w20, was after 2000km with oil filter clean too, no debris or metal chips found. Engine performs great, same whole time in my ownership, no idle problems etc.

To be fair I must admit - I dont know what the previous owner was filling it with (gasoline) and how he was using it (low rpm, city runs vs highway runs). I dont under-rev my engine, rather higher rpms around 2500rpm to 3000 on highway. First lets say 10 tanks was done with cleaning aditive - to burn some possible carbon build ups. I highly doubt there was some big amount of carbon with this "mileage" even with low-end fuel possibly used. In my country we have additive-less 95 octane, wich I mix with aditivation. The premium gasoline is 100 octane with aditives - I added to this too in the begining of my ownership.

Thank you
 
#9 · (Edited)
I will find out - I have to ask the mechanic, doesn't have techstream at home myself, pretty pricey

EDIT: looks like the valvematic is tested during health check. I attached printscreen of results. No present codes, yellow ones in history are in my opinion from past rodent visit.

First time I noticed the ticking rattling was after oil change to 5w30 so I suspected it, but it didnt go away after 0w20 revert. Also acording to manual there should be 4.2l of oil in engine including filter, I drained about 5 liters...
 

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