'Tik' 'Tik' noise for Vitz 2006 Engine - Toyota Yaris Forums

asimaleem · 04-29-2015, 02:48 AM

My vitz 2006 model (1.0L 3-cylinder engine 83K Kms done) is generating 'Tik' 'Tik' noise for the past two weeks from the engine bay when accelerator is pressed. This sound is noticeable at lower speed but goes away at higher speed.I got it checked from a local mechanic and according to him its coming from engine tappets and could be cam or bush or some other engine issue as well , which can be diagnosed only once engine is opened.
Then I took my car to Toyota 3s and their preliminary diagnosis was that it's tappets sound from the engine due to faulty VVT controller that's not letting the oil to flow freely at low speed, however as the car speed increases, flow gets bit normal and thus no audible tappet sound. According to Toyota 3S ,this can only be confirmed once they open the tappets cover and do the detailed analysis. If required VVT controller will be replaced and tappets adjustment will be done.

Both Toyota 3s and local mechanic suggested me to use 20W50 oil instead of 5W30 (Toyota recommended) and noise may go away .So I replaced the oil and tapped noise did go away 90% for 2- 3 days but has re-appeared

Questions.
1). Is Toyota's preliminary diagnosis correct... Any experience?
2). Is it safe/recommended to open the tappets cover and do detailed analysis let's say by removing something from engine.Can it cause some major screw-up? or should I let it alone as is?
3). Is it safe to get VVT controller replaced without any subsequent impact on the engine.Any risks?. Is it a common procedure?

Comments and suggestions please???

scoobopdan · 04-29-2015, 02:35 PM

I have no experience with that specific problem, but it sounds like it could make sense. Is the ticking coming back at the same volume as it was before? Any changes in it like the speed at which it starts to go away? I'd definitely recommend not driving it unless you absolutely have to until you fix the issue. Worst case, but possible, is that changing the oil did fix the problem, but not quick enough. The ticking could be an engine knock or an issue with the piston. But like I said, I don't have experience with what they were talking about specifically.

shepd · 04-30-2015, 10:21 AM

20W50 is what mechanics call "engine honey". It's how you quiet a vehicle you're either trading in or that you're selling. ie: It's a temporary fix if you're looking to scam someone. Being that it's way too thick, it will damage the engine over time, so I'd get it out of there. You need to have the engine repaired properly (broken parts replaced or repaired) so it will last.

Mikastef · 05-03-2015, 01:37 PM

I think you may have a similar problem as mine:

see my post
http://www.yarisworld.com/forums/showthread.php?t=54069

I have not been able to solve the problem yet.... :(... I am still investigating. Three Mechanic + one silencer specialist also have not been able to make the problem occurred in a control situation (e.g. when they were driving the car and making it intentionally make the sound)....my last mechanic told me to let it deteriorate a bit in order to detect it better (since the sound will become louder). Apparently he hints that it might be the Timing chain belt tensioner which is making this tick...

my engine is 1KR-FE but with no VTI.. so strangely I do get this tik tick sound when accelerating.
Apparently I think it might be bearing related - I am still investigating.

I use 5W40 oil semi synthetic.

Let's keep in touch whenever either of us solve this problem.

04-29-2015, 02:48 AM	#1
asimaleem Drives: Vitz Join Date: Mar 2015 Location: Lahore Posts: 4	'Tik' 'Tik' noise for Vitz 2006 Engine My vitz 2006 model (1.0L 3-cylinder engine 83K Kms done) is generating 'Tik' 'Tik' noise for the past two weeks from the engine bay when accelerator is pressed. This sound is noticeable at lower speed but goes away at higher speed.I got it checked from a local mechanic and according to him its coming from engine tappets and could be cam or bush or some other engine issue as well , which can be diagnosed only once engine is opened. Then I took my car to Toyota 3s and their preliminary diagnosis was that it's tappets sound from the engine due to faulty VVT controller that's not letting the oil to flow freely at low speed, however as the car speed increases, flow gets bit normal and thus no audible tappet sound. According to Toyota 3S ,this can only be confirmed once they open the tappets cover and do the detailed analysis. If required VVT controller will be replaced and tappets adjustment will be done. Both Toyota 3s and local mechanic suggested me to use 20W50 oil instead of 5W30 (Toyota recommended) and noise may go away .So I replaced the oil and tapped noise did go away 90% for 2- 3 days but has re-appeared Questions. 1). Is Toyota's preliminary diagnosis correct... Any experience? 2). Is it safe/recommended to open the tappets cover and do detailed analysis let's say by removing something from engine.Can it cause some major screw-up? or should I let it alone as is? 3). Is it safe to get VVT controller replaced without any subsequent impact on the engine.Any risks?. Is it a common procedure? Comments and suggestions please???

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04-29-2015, 02:35 PM	#2
scoobopdan Drives: 2008 Yaris Join Date: Sep 2014 Location: Austin, TX Posts: 81	I have no experience with that specific problem, but it sounds like it could make sense. Is the ticking coming back at the same volume as it was before? Any changes in it like the speed at which it starts to go away? I'd definitely recommend not driving it unless you absolutely have to until you fix the issue. Worst case, but possible, is that changing the oil did fix the problem, but not quick enough. The ticking could be an engine knock or an issue with the piston. But like I said, I don't have experience with what they were talking about specifically.

04-30-2015, 10:21 AM	#3
shepd Drives: 2007 Yaris 5 door RS Join Date: Nov 2014 Location: Kitchener, ON Posts: 178	20W50 is what mechanics call "engine honey". It's how you quiet a vehicle you're either trading in or that you're selling. ie: It's a temporary fix if you're looking to scam someone. Being that it's way too thick, it will damage the engine over time, so I'd get it out of there. You need to have the engine repaired properly (broken parts replaced or repaired) so it will last.

05-03-2015, 01:37 PM	#4
Mikastef Drives: Yaris Join Date: Feb 2013 Location: Mauritius Posts: 53	I think you may have a similar problem as mine: see my post http://www.yarisworld.com/forums/showthread.php?t=54069 I have not been able to solve the problem yet.... :(... I am still investigating. Three Mechanic + one silencer specialist also have not been able to make the problem occurred in a control situation (e.g. when they were driving the car and making it intentionally make the sound)....my last mechanic told me to let it deteriorate a bit in order to detect it better (since the sound will become louder). Apparently he hints that it might be the Timing chain belt tensioner which is making this tick... my engine is 1KR-FE but with no VTI.. so strangely I do get this tik tick sound when accelerating. Apparently I think it might be bearing related - I am still investigating. I use 5W40 oil semi synthetic. Let's keep in touch whenever either of us solve this problem.