Hi guys!

 

it is my first post here so..be gentle :)!

 

i have a skoda octavia 2 2012 2.0 tdi 4x4 and yesterday i noticed a trage whistling / squeaking sound coming from the timing belt area! the sound is  discreet and can oly be heard clearly if i open the hood !

 

i pulled off the accesorry belt because i thought that was making the sound...but it wasn t!  

 

the sound is not present when the car is cold...but rahter when it reaches normal temperature!

 

otherwise the car is working perfecly!

 

i attached a sample recorded close to te sound source

 

 

https://drive.google.com/file/d/101RVsfQPVh4JglQMJDooRxhfxbvY0vIe/view?usp=sharing

 

 

any suggestions as tio where i should look?

 

i hope someone can help! thanks

 

 

 

 

 

 

Fichier audio de Codin (1)   

 

 

this is the recording in another format! thanks

https://drive.google.com/file/d/101RVsfQPVh4JglQMJDooRxhfxbvY0vIe/view?usp=sharing  and the google drive link!  sorry for the separate posts

When was the cambelt/idler/tensioner/waterpump last changed?

15000 km ago

@Mike_mike - Well, I'm having similar thoughts to @chrisund123 , with the note that a replacement cam belt does not guarantee replacement of the idler and tensioner assemblies, and the water pump would be billed as a separate part. 

replaced under my nose...so i m sure of the replacement. the question is what should i start with and how dangerous it is ?

On 23/08/2019 at 07:44, Mike_mike said:

what should i start

A screwdriver. Not a joke but a presumption that you don't have on demand access to an engine stethoscope; touch the handle to the engine where you hear the noise coming from, and use the blade to further isolate the source.

 

Best case; sometimes we hear things that aren't there.

Worst case; big bang followed by new engine.

tried the screwdriver...and the sound doesn t seem to come from the hpfp...but rather from the idler pulley or another pulley from the top part of the timing assembly

15,000 km isn't a long time, but possible for the parts to be faulty.

 

What brand were the parts? OEM or aftermarket?

 

I'd be getting the belt off and turning them by hand to check the bearings for roughness and squeaks. It's a PITA to investigate, but I'd want to rule it out as a matter of urgency, rather than find out the hard way.

SOLVED ! 

 

top pulley was faulty (g3 in the picture ). it had a broken seal and all the grease leaked out the back. it was Daiko. 20 minute job. replaced it with an skf new one. 10 dollars. me happy

how does the timing belt look to you guys? 

On 24/08/2019 at 06:14, Mike_mike said:

how does the timing belt look

Nearly new.

Belt looks ok, but has it been contaminated by the grease? If it has, it's recommended to change it in case the rubber deteriorates.

no grease on the belt.

Sounds like you've gotten away with it then! Well done on spotting the noise and dealing with it quickly, the consequences of not finding the failed part could have been huge.

i'm happy too....i bought an skf pulley..hope it s a better quality one..