2017 T6 150 manual ticking noise

[Ace]

Hello,

Recently upgraded from a caddy to T6 and I've noticed an odd noise coming from the engine when ticking over and also driving, I've had a look at various other threads but can't find quite the same noise.

Would anyone be able to diagnose what this could be, a possible turbo issue?

It's a euro 6 2017 150 highline manual

 

[Ace]

Since posting I've had the aux belt tensioner replaced, timing belt and water pump replaced, oil & filter change, the turbo and injectors looked at however the noise is still here. It's also seems to increase with the revs and can sometimes even sound like it's even something just loose rattling around. Would anybody have any other ideas or things I can check as it's driving me a bit mental now

 

[Dellmassive]

Not heard that noise before.

Are we thinking tappet noise from a stuck valve lifter?

@mmi ... Some nice audio there to look at?

 

[DXX]

A video of the engine noise showing the tachometer at steady RPM would allow the frequency / crankshaft revolution to be determined by somebody with the software.

 

[Howzat]

Just listened to your vids and when it finished the next video was this.
Almost exactly the same so @Dellmassive could be bob on.

 

[Ace]

Just listened to your vids and when it finished the next video was this.
Almost exactly the same so @Dellmassive could be bob on.

I actually watched that video also just before you had replied, it's similar but still a little different. Sometimes when sat idling it changes noise kind of like its something loose then goes back to how it will normally sound. I'll ty get a video of this tomorrow when at work

 

[Dellmassive]

@Ace you said it was a 150 2017..

Can you get the engine type code?

We can look at the manual about the valve train.

 

[Ace]

@Ace you said it was a 150 2017..

Can you get the engine type code?

We can look at the manual about the valve train.

Thanks for replying back again, here is all the info from the service booklet

 

[Dellmassive]

CXHA engine then.

More info here..

T6 - 4-cylinder common rail engine CXEB CXFA CXGA CXGB CXHA CXGC CXHB

Workshop manual for the 4-cylinder common rail engine CXEB CXFA CXGA CXGB CXHA CXGC CXHB

www.t6forum.com

.

 

[Dellmassive]

Yeh .. hmmm

Hydro tappets, 16 of them. (Part 7) 4per cylinder, 2 inlet, 2 exhaust.

So a possible cause for you to look at.

You could use a mechanic stethoscope or sounding bar to try and locate the tapping sound.

If it's coming from the rocker cover I'd be looking at the valve train.

 

[Dellmassive]

What's the millage?

You can have tappets changed individualy, or per cylinder.

But usually it's best to replace the full set. So all 16.

Not sure on a labour time to do the job, not come across this on a transporter before.

But was a common job on some Ford petrol engines back in the day when I was doing the spanners.

 

[Dellmassive]

Looks like from £6 for a single tappet, to £150 for a set with rockers.


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[Ace]

What's the millage?

You can have tappets changed individualy, or per cylinder.

But usually it's best to replace the full set. So all 16.

Not sure on a labour time to do the job, not come across this on a transporter before.

But was a common job on some Ford petrol engines back in the day when I was doing the spanners.

Just turned 77k, I've only done 3k since buying it in September but I do have a fear of driving it with this ongoing noise and it's my work van so not ideal.

Thanks for looking into that, it will give me another route to go down now to try get sorted and hopefully be covered by the warranty I took out when buying the van

 

[DXX]

Valve train noise will be every second crankshaft revolution if has a single source, before spending money if you do what I suggested earlier and post a video with the noise and RPM included it can be diagnosed.

 

[Dellmassive]

Just turned 77k, I've only done 3k since buying it in September but I do have a fear of driving it with this ongoing noise and it's my work van so not ideal.

Thanks for looking into that, it will give me another route to go down now to try get sorted and hopefully be covered by the warranty I took out when buying the van

Keep us posted.

 

[Ace]

Valve train noise will be every second crankshaft revolution if has a single source, before spending money if you do what I suggested earlier and post a video with the noise and RPM included it can be diagnosed.

I'll do this also, is there a reccomendned RPM/length of time best to use? I'll get audio from within the can and under the bonnet. Thanks

 

[mmi]

A snippet from beginning of the first video. The shadowed part is 0.145 seconds - thus engine revving at 825RPM - one full "cycle" - combustion noise from all cylinders. The "rattle" is spread more or less evenly everywhere suggesting there would be several tappets? making the noise.



If there would be only a "single" source it would be something similar as here:

[T6_measured] Injector failure

Keyword “loud knocking metallic noise from engine”. VW has published in September a service note which can be found with vehicle's VIN. The sound clips from my engine (150PS, EU6) with comments on 21 Oct 2017 in thread Tick over noise EDIT: audio files from the thread copied here as...

www.t6forum.com

 

[DXX]

@Ace has the vans oil level been increasing without adding oil?
Valve gear wear doesn’t appear to be a common defect but if the oil were diluted with fuel reducing viscosity and film strength it could cause accelerated wear.
Does the van have full service history?

 

[Ace]

A snippet from beginning of the first video. The shadowed part is 0.145 seconds - thus engine revving at 825RPM - one full "cycle" - combustion noise from all cylinders. The "rattle" is spread more or less evenly everywhere suggesting there would be several tappets? making the noise.

View attachment 191184

If there would be only a "single" source it would be something similar as here:

[T6_measured] Injector failure

Keyword “loud knocking metallic noise from engine”. VW has published in September a service note which can be found with vehicle's VIN. The sound clips from my engine (150PS, EU6) with comments on 21 Oct 2017 in thread Tick over noise EDIT: audio files from the thread copied here as...

www.t6forum.com

Thanks @mmi would an extended voice clip help with this at all? If it is this fault would it be best to be going to VW direct or a vw specialist?

@Ace has the vans oil level been increasing without adding oil?
Valve gear wear doesn’t appear to be a common defect but if the oil were diluted with fuel reducing viscosity and film strength it could cause accelerated wear.
Does the van have full service history?

I haven't noticed the oil levels at the moment, I checked it when I first got the van and then it sat for 3 months not being used until it could be looked at and then the next stage was it having the repairs done including timing belt & water pump. I haven't even done 100 miles since having it back with the fresh oil so I will keep an eye on the levels.

The van came with full VW service history including the timing belt already done which is why this appealed to me and I flew to London to collect it from a Ford dealer and drove it back to Scotland but looks like I've brought a lemon back now

 

[Dellmassive]

when you had all of this done. . . .

" I've had the aux belt tensioner replaced, timing belt and water pump replaced, oil & filter change, the turbo and injectors looked at however the noise is still here"

did none of the mechanics pic up on the noise?

or was this all done before you had the van?


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im thinking a quick trip to a local vw indy or VW dealer for a quick "listen" from a Tech would have that diagnosed in seconds?

its a very distinctive sound. and once you've heard it, then fixed it you wont forget it.

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the DMF can make a rattling sound, that will disappear un der load or with revs. but that's a different sound and will be heard lounder from the underside of the van or wheel arches as the sound will come from the gearbox bell housing.