https://youtu.be/uP_q-llNg_0

do you know what is it?

@Georgek

Sorry i can not tell what it is.

When was your car built, was it pre 2012 ?

Are you aware of the issue with timing chains / tensioners on early engines and the upgraded timing chain / tensioner set up for them?

then there is the plug lead issue with some.

2015 ea211 with timing belt. Sounds like tappets or injectors 

They all tick. I believe it is the fuel injectors. 

The noise when the revs drop is very annoying 

Probably the (mechanical) high pressure fuel pump, which is driven by a cam on the camshaft. They are often noisy at idle when listening outside but should be inaudible when sat in the car with the doors shut.

 

Due to the very small injection quantity required  at idle speeds and amplified through the stainless steel pipework and injectors.

Edited 1 April, 20206 yr by xman

Yes but what needs to be changed? When I disconnected hpfp i had the mechanical noise of the pump but no tapping noise

Nothing needs to be changed. Its normal. Some are noisier than others.

 

Using a heavier grade oil might reduce the noise a bit.

E.g. 5w-40 instead of 5w-30

 

If you really disconnected the hpfp the engine couldn't run so I don't understand what you are doing.

Disconnected the plug. The problem is that the car new didn’t had noises

If it is due the oil, what do we hear? The cam that works now with friction?

The cam is not necessarily in constant contact with the pump plunger, where it makes contact depends on fuel flow and pressure demand. Not sure what you disconnected, but unwise to do as you may have removed the pressure control or something.

 

I think you can change the removeable plunger on the pump if its worn. If you do remove the pump, check the camshaft camlobes for wear as well. I have absolutely no experience here so check servicing manuals before proceding.

 

https://www.autodoc.co.uk/car-parts/fuel-injection-pump-high-pressure-pump-12903/skoda/fabia/fabia-nj3/108657-1-2-tsi

 

Important to use the correct VW/Skoda spec oil, and adhere to service intervals to avoid premature wear on this part.

 

 

 

Edited 1 April, 20206 yr by xman

The high pressure fuel pump has an electric connector to the car. I disconnected this to test if the ticking stops. And because the ticking was stopped (and started the mechanical noise like when hpfp doesn’t work) I supposed and changed the camshaft tappet but again i have the same noise. 
So you say that all the hpfp needs replacement?

No, I say its probably normal, many others including here on Briskoda have complained about the tapping noise at idle but I don't recall any actual faulty hpfp on 1.2tsi reported here.

 

https://uk-polos.net/viewtopic.php?t=70810

 

Have you got fresh oil in the engine and what spec?

 

Did you check the camshaft lobe wear?

 

Edited 1 April, 20206 yr by xman

I went to vw, they changed lifters and the problems stays. They said now camshaft adjuster gear but it isn’t solution to change all

the car to find it. 
I saw that the noise begins after cold start ends. Any ideas?

 

 

The timing adjuster solenoid for the intake camshaft can be noisy at certain rpms, for me i don't hear it when sat still, but at around 2800-3200 rpm in gear cruising in 2nd or 3rd i get it. Dissapears if i give it more throttle or let go of the throttle.

 

My guess is that it's trying to make constant adjustments to maintain efficiency and responsiveness at light loads. Kinda wonder if a remap would do anything to it.

 

If you have a DSG box, someone in the past few months was complaining of a DMF issue, not sure if it turned out to actually be the DMF or something else (or if it actually has one for that matter - the manuals are SMF).

I know this thread is rather old now, but I'm just checking whether anyone knows if this issue was ever resolved?  I'm asking because I've just noticed that my wife's Fabia 2016 1.2 TSI 90 that she picked up a few weeks ago on just 23k miles is making exactly the same tapping sound as you can hear in GeorgeK's video.  As in the video, you can hear it most prominently at around 1000-1100 rpm when revving slightly on idle, and it is not audible on lower revs or when driving along.  The car drives really well; i.e. well pleased with otherwise.  The car was serviced last July and it's only done a couple of k  since,  and was regularly serviced before then. If it is a rather noisy but otherwise 'normal' hpfp, I can (reluctantly) learn to live with it.  But obviously, if it's  a faulty camshaft adjuster or something else more sinister it'll need seeing to.  

On 02/03/2021 at 18:25, Morris8 said:

I know this thread is rather old now, but I'm just checking whether anyone knows if this issue was ever resolved?  I'm asking because I've just noticed that my wife's Fabia 2016 1.2 TSI 90 that she picked up a few weeks ago on just 23k miles is making exactly the same tapping sound as you can hear in GeorgeK's video.  As in the video, you can hear it most prominently at around 1000-1100 rpm when revving slightly on idle, and it is not audible on lower revs or when driving along.  The car drives really well; i.e. well pleased with otherwise.  The car was serviced last July and it's only done a couple of k  since,  and was regularly serviced before then. If it is a rather noisy but otherwise 'normal' hpfp, I can (reluctantly) learn to live with it.  But obviously, if it's  a faulty camshaft adjuster or something else more sinister it'll need seeing to.  

 

The camshaft adjusters were only an issue on the really early EA211 1.2TSIs, only a few of the late 2014 early 2015 plate Fabias got the old revision. Mines a mid 2015 and has the revised camshaft adjuster.

 

The HPFP noise is quite noticeable but as said by others, unfortunately it is just normal and something have to live with. The injectors are quite noisy in these engines too.

Many thanks for this reply.  Getting used to the sounds of different modern engines is yet another challenge that old timers like me have to face.  The agricultural sound of many modern  units has a certain deja vu element to it. When I first drove an HTP the characteristic three cylinder thrumm,  so beloved of many, sounded suspiciously to me like the gentle rumble of worn white metal big ends so familiar in my youth. In fact, other than the noise referred to above, the four cylinder 1.2 tsi  engine in my wife's car sounds relatively smooth and quiet compared to many other engines I've heard.  

14 hours ago, FabiaGonzales said:

 

The camshaft adjusters were only an issue on the really early EA211 1.2TSIs, only a few of the late 2014 early 2015 plate Fabias got the old revision. Mines a mid 2015 and has the revised camshaft adjuster.

 

The HPFP noise is quite noticeable but as said by others, unfortunately it is just normal and something have to live with. The injectors are quite noisy in these engines too.

MMM how to we know which camshaft adjuster is installed in our fabia? Mine is from february 2015 produce. 

 

Any chance to get this info? I airways noticed that when I release or press gas pedal there is a small tremor on the engine.

 

Regards!

51 minutes ago, NxRipper said:

MMM how to we know which camshaft adjuster is installed in our fabia? Mine is from february 2015 produce. 

 

Any chance to get this info? I airways noticed that when I release or press gas pedal there is a small tremor on the engine.

 

Regards!

If it's one of the dodgey ones, it'll have failed by now or will have been replaced.

 

The issue was with the screws backing out which would eventually jam the camshaft and total the engine completely.

 

Give a skoda dealership a ring and ask them about it

Hello. Old topic but was the noise resolved.  Or is it something to be conserned off. Thank you

Having read the contributions on this thread and other forums I've found no-one who claims to have definitively resolved this issue; rather the general view seems to be that its most likely he high pressure fuel pump which can be noisy on some cars, including some from new, but not very noticeable on others.  Significantly, Georgek said the noise went away when he disconnected the wiring to the hpfp; given this, I'm not sure why his VW dealer decided to change the lifters, and it's perhaps not surprising that this had no effect on the noise! I read of someone on a Polo forum who got rid of a tapping noise by replacing the tappet in the hpfp pump, but the noise returned in a few days, so no luck there either.  At the moment the car runs fine, does not burn oil, has excellent fuel consumption, is not throwing up any codes etc. so I'm of the view that this noise on idle is more of an annoyance than anything else; i.e. unless it gets decidedly worse, and/or something obviously starts to go wrong with the engine, it's the sort of thing you could randomly throw huge amounts of time and money at for no benefit. Presumably most of these  MK3 1.2 TSI models should have had or are due a cambelt change so that's a good opportunity to check the camshaft adjuster anyway.  

Okay.  My polo is at 67k km now. Had cambelt replaced at 60k.  Dealer didnt say any abnormal was spotted.  Also noted i can hear it between 1000-1800rpm then it disappers. Always serviced by time.  So need to try to learn to live with it i guess. Just weird when the noise feels like something is about to blow up.  Car runs perfectly else.  Also noted it dampers the noise when u get engine hot.  But u can still hear it. Thank u for replying. 

I know the topic is old, I live in Turkey, I have the same problem, did you find a solution?  vw polo 2014 cjz

@mustafa688

Welcome.

Hopefully someone can help.

 

?

Different matter, but have you had the cambelt and tensioner replaced yet?

we had a cam unit replacement but there is still sound  

 

 

i uploaded a video