Hi, beena member on here since my Octavia VRS days.. I have a Seat Leon Copa now. Same engine as ina lot of Skodas and you guys have always seemed knowledgeable, that said, mods if it's not allowed move it to the right place and I apologise on advance.

 

Anyway I have a 1.2 Tsi and it's making a horrible knocking noise and a weird noise when I come off the accelerator. It doesn't change whether its cold or has been on a drive but it does start noisy.

 

It's been to two garages, the first one said it's too awkward to diagnose so could be in and out and would be easier to just swap the engine.

 

The second said it's definitely a mechanical noise, which I already know and they think it's piston slap and will need an engine rebuild, which they won't do. I got the impression from both garages they felt it wasn't worth them messing about when they can do other things...

 

The car pulls fine and if it wasn't for the noise I wouldn't suspect anything is wrong.

 

I've attached a couple of videos to show what I mean.

 

Thanks in advance.

 

 

 

 

https://youtu.be/YMJUum721Mw

 

 

 

The link below is a video of the noise it makes when it's revved.

That is a truly horrible racket for a petrol engine to make, it sounds like tappets to me, I suspect the top end has suffered oil starvation.

Easy enough to whip off the cam cover and take a look.

1 minute ago, sepulchrave said:

That is a truly horrible racket for a petrol engine to make, it sounds like tappets to me, I suspect the top end has suffered oil starvation.

Easy enough to whip off the cam cover and take a look.

Thank you for your reply? I hope it is that as I can't afford an engine rebuild. Is there a guide online to look at?

22 minutes ago, Dazl1212 said:

Thank you for your reply? I hope it is that as I can't afford an engine rebuild. Is there a guide online to look at?

 

What, a girl guide?

 

Might be illegal...

13 minutes ago, sepulchrave said:

 

What, a girl guide?

 

Might be illegal...

No, an instructional guide lol  for instance do I need to disconnect the high pressure fuel system to do it? Etc.

Difficult to say but sounds like its a very worn/loose chain drive

44 minutes ago, sepulchrave said:

Easy enough to whip off the cam cover and take a look.

Not so, on this engine the camcover is also the integrated camshaft carrier.

 

2 minutes ago, xman said:

Difficult to say but sounds like its a very worn/loose chain drive

Not so, on this engine the camcover is also the integrated camshaft carrier.

 

Not sure if it's relevant but it had the chain and tensioner changed at 60k miles and it's on 80k now. It doesn't seem to be coming from that side if that helps?

Check its not a gearbox issue, does it do it when stood and clutch depressed?

Edited 24 April, 20233 yr by xman

1 minute ago, xman said:

Check its not a gearbox issue, does it do it when stood and clutch depressed?

Yep, it does it all the time except when it's accelerating it being revved. But that's just the engine noise covering it up I think.

Edited 24 April, 20233 yr by Dazl1212
To add

Also have you checked all the engine mounts in particular the restrictor under the car between gearbox and body.

Sometimes the securing bolt shears or can be loose.

Edited 24 April, 20233 yr by xman

5 minutes ago, xman said:

Also have you checked all the engine mounts in particular the restrictor under the car between gearbox and body.

Sometimes the securing bolt shears or can be loose.

I've not, is it easy to locate? I did suspect engine mount because the engine seems to move quite a bit when it's running. But I would have thought the garages I took it to would have picked up on that. At least one of them anyway.

https://www.lllparts.co.uk/catalogs/seat/E/LE/703/1/199/199065

Part 27 on the diagram I think

 

You need to have car up on a ramp to see it properly. Maybe if you jack up gearbox side, remove wheel youll be able to see it.

 

Maybe looks like this (looking up from directly underneath)

Edited 24 April, 20233 yr by xman

A good german car specialist would be able to check your car quickly and give a verdict. Most large towns have one .

 

As you are in Chorley have you tried https://www.chorleyautovolk.co.uk/index.php

4 minutes ago, xman said:

A good german car specialist would be able to check your car quickly and give a verdict. Most large towns have one .

 

As you are in Chorley have you tried https://www.chorleyautovolk.co.uk/index.php

Thanks mate, I haven't no. But I'll give them a call tomorrow. Hopefully it's worth them looking as it's only worth about £3,500.

 

Weirdly, when I started it up then and it was sitting at 1000 rpm it wasn't making the sound at all and then as soon as it dropped to it's normal idle speed it started again.

Of course Ive been assuming from the 1st video that its a manual. But if I'm wrong and its a DSG auto you also have the possibility of a failing DMF.

Edited 24 April, 20233 yr by xman

4 minutes ago, xman said:

Of course Ive been assuming from the 1st video that its a manual. But if I'm wrong and its a DSG auto you also have the possibility of a failing DMF.

Aye, it's a manual 

Isn't this the engine type where a carelessly replaced oil filter ends up with an old seal stuck and duplicated when the new filter goes on?

Leading to low oil pressure.  Not sure why it's not triggering a warning, but maybe not quite low enough?

Did the noisiness start shortly after an oil service? When was the last oil service? What exact oil was used? What part number of filter?

 

1 minute ago, Breezy_Pete said:

Isn't this the engine type where a carelessly replaced oil filter ends up with an old seal stuck and duplicated when the new filter goes on?

Leading to low oil pressure.  Not sure why it's not triggering a warning, but maybe not quite low enough?

Did the noisiness start shortly after an oil service? When was the last oil service? What exact oil was used? What part number of filter?

 

I'm not sure if I'm being honest. It was 5-30 oil the one that meets VW specifications. The garage sorted out the oil filter..

 

I did have a warning for a throttle body sensor having low voltage a few times but I know it needs a new battery and the warning disappeared after a drive. 

Sorry I haven't quite answered every question. It was making this noise before the service but it only made it if I revved it hard and released the accelerator, which made me think it was a loose bracket on the exhaust. The knocking at idle has only started recently.

34 minutes ago, Breezy_Pete said:

Isn't this the engine type where a carelessly replaced oil filter ends up with an old seal stuck and duplicated when the new filter goes on?

Leading to low oil pressure.

 

Yes. The draindown seal has a habit of dropping out of the old filter when removing, partly stuck to the machined face in the housing and hiding under a residual pool of black oil. Poor mechanic that doesnt check with their fingers. Result is constant low oil pressure and flow. The critical chain tensioner relies soley on oil pressure (plus a weak spring), so the chain tension is too low which can be disastrous.

Sometimes a mechanic fits the earlier 1.4tsi style of oil filter instead of the correct 1.2tsi type. Hence why Pete is asking for the oil filter part no, you should be easily able to see it on the filter. The video shows a black filter indicating an aftermarket type, VAG and Mann, Bosch equivalents are Silver.

 

 

1 minute ago, xman said:

Yes. The draindown seal has a habit of dropping out of the old filter when removing, partly stuck to the machined face in the housing and hiding under a residual pool of black oil. Poor mechanic that doesnt check with their fingers. Result is constant low oil pressure and flow. The critical chain tensioner relies soley on oil pressure (plus a weak spring), so the chain tension is too low which can be disastrous.

Sometimes a mechanic fits the earlier 1.4tsi style of oil filter instead of the correct 1.2tsi type. Hence why Pete is asking for the oil filter part no, you should be easily able to see it on the filter. The video shows a black filter indicating an aftermarket type, VAG and Mann, Bosch equivalents are Silver.

 

 

Nice one mate, I'll check it out tomorrow when it's light.

@xman

@Breezy_Pete

 

It's Bosch F 026 407 183.

 

I also have made a longer video of the issue(s)

 

https://youtu.be/eC09O1ZRsjw

 

 

Edited 25 April, 20233 yr by Dazl1212

I think that's probably a correct filter, but if you'd like to message me with your VIN I can check more thoroughly.

I think @xman is probably the better fella to guide you through checking whether the 'seal error' has been made by the person fitting it. I've read about the issue but never had hands-on experience of this engine.

10 minutes ago, Breezy_Pete said:

I think that's probably a correct filter, but if you'd like to message me with your VIN I can check more thoroughly.

I think @xman is probably the better fella to guide you through checking whether the 'seal error' has been made by the person fitting it. I've read about the issue but never had hands-on experience of this engine.

Thanks Pete you and xman have been extremely helpful. I will dig it out later and leave it with you for when you have time. As I say, much appreciated.