Audi a7 2017 noise in idle CRTD engine

[jjb0800]

Hi guys,

Does my engine sound fine?

 

 

 

Edited Saturday at 11:13 AM by jjb0800

[NJP10]

Sorry to say but mine definitely doesn’t sound like that!! Have you shown it to a mechanic?

[jjb0800]

Thanks for the reply.

 

I have shown it to a few mechanics.

 

One said it's complete normal. (Non specialist local garage)

 

Another said the timing chain is stretched and will need replacing. (Audi Specialist) 

That is a 2.2k job, including kit and tensioners

The vehicle is approaching 90k, but from reading, the chains should last the lifetime of the vehicle.

What's the mileage and year on your vehicle, and have you replaced the chains yet? 

 

 

[spartacus 68]

If it is chain rattle then it’s linked to long service intervals potentially at the start if the car’s life. The oil viscosity and lubrication properties are diminished by 8k miles, never mind 18k miles. 5w30 will come out like water when draining. What is history of servicing please?

Before committing to any repair, you might want to speak to VAG Technic (Dudley) or Decimal Tenths (Newcastle) first. They regularly drop engines and repair tappets (worn needle bearings), stretched chains or slap (worn chain sprockets or broken plastic guides). The figure of £2.2k seems cheap, this is normally double given labour and genuine parts cost.

First thing to do would be to drop oil and see if any contaminants. They also check oil filter for any metal  filings or swarf. If that all checks out they can remove rocker covers to view camshafts.

You can possibly see camshaft wear with endoscope, but only partial view, or even get a stethoscope to the back to listen to see if that reveals more. 

Chains are meant to be for life of car, but it’s all down to service history and use unfortunately.