Please Help! Getting the dreaded diesel noise fixed...

[cojomo2]

Hi,

New to this site..some great info on it...

Anyway, I am due to drop my car into the mechanic to get it fixed..he's not sure what's causing the noise but I told him I researched it online and am pretty sure it's the timing chain and associated parts.

Unlike some info I have read here, the noise on my car can not be heard on start up, and then fades when the engine warms up..it's the exact opposite.

When I start it up, it sounds perfect..after about 10 mins, when the engine has warmed up, as soon as I stop the car in traffic, I can hear a ''knock knock knock'' type noise. It's not the light ticking noise the injectors make, but a heavier ,louder noise. I wouldn't describe it as a rattle though, but does sound like a milder version of a diesel.

On another site, I read that a guy had his sorted under warranty and got the timing chain, tensioner, a valve and the variator/adjuster (most expensive part) replaced and it solved the problem. I gave my mechanic the link to the site and he said he can change these parts too, costing close to a grand all in..

Does anyone know if all these parts need replacing? Or if even replacing them should fix my problem?

Anyone with a similar issue, that has had it resolved? If so, I 'd love some advice..supposed to be dropping it in soon, and don't have the cash to be replacing parts that may not need replacing.

Cheers

[alexperkins]

Get the cam follower on the fuel pump checked too. When these fail, they make alot of noise.

[cojomo2]

Get the cam follower on the fuel pump checked too. When these fail, they make alot of noise.

Hi Alex, thanks for the reply.

The car has already been in for an inspection, the mechanic checked the cam follower and said it's ok, also had a look at the timing chain and said it looks normal...I told him that I read that a guy with the same problem had all the parts I mentioned in my above post replaced and problem sorted, so he agreed to to same...only the guy that had them replaced had it done under warranty, so had the timing chain and 'all associated parts' replaced...just wondering if that is necessary, of if just the timing chain and tensioner should do the trick?

[alexperkins]

Id possibly get a second opinion on it, and get someone to have a really good lock as it sounds like a tensioner or something, but a knock sound suggests a bearing perhaps

[cojomo2]

Id possibly get a second opinion on it, and get someone to have a really good lock as it sounds like a tensioner or something, but a knock sound suggests a bearing perhaps

This is a 2nd opinion..first guy said it was just the injectors..which it's not.

Here is a video that is pretty similar to the way mine sounds, any ideas?

[PDT]

pull the dipstick out with the engine running, does the noise change?

[cojomo2]

pull the dipstick out with the engine running, does the noise change?

nope, it doesn't..out of curiosity , if it did, what would this indicate?

[chowgar]

This is a 2nd opinion..first guy said it was just the injectors..which it's not.

Thought the tfsi engines were known for noisy injectors..... but i'm no expert....

[alexperkins]

The 2.0 TFSI engines are known to be noisy as they have a high pressure fuel rail and pump 

[cojomo2]

the first mechanic was a general mechanic, the one thats looking at it now is sort of a VAG specialist. I can hear the injectors ticking away when I lift the hood, hardly notice it from inside the cabin, this noise is louder and can be heard inside the cabin..really annoying! Have a listen to the you tube video I posted and see what you think.

Thanks.

Edit: Also had the car in getting a dsg oil change in a stealer and asked them about the noise...they said they thought it was the 'timing chain and associated parts' , quoted me a fortune. They also said it was no harm, that they had never seen a timing chain snap...but the noise is driving me nuts, I only have the car a short while...

[alexperkins]

Is yours a 2.0TFSI GTI mate?

That engine doesnt have a timing chain. It has a timing belt

[cojomo2]

Is yours a 2.0TFSI GTI mate?

That engine doesnt have a timing chain. It has a timing belt

yep has a timing belt, but also a smaller timing chain at the other side of the engine.

[alexperkins]

http://www.mk5golfgti.co.uk/forum/index.php?topic=5646.25

Oh yes my apologies!

The link above does have some useful information in it - worth having a read.

[cojomo2]

http://www.mk5golfgti.co.uk/forum/index.php?topic=5646.25

Oh yes my apologies!

The link above does have some useful information in it - worth having a read.

Cheers Alex..I don't think there is one thread relating to a diesel noise on the mk5 gti that I haven't read at this stage!

Just hoping to get feedback of someone here who has had it done, and exactly what they had replaced.

I notice some have a noise on cold start up, that disappears when the engine warms up ...others don't have it on a cold start up, but only when the engine warms up, at idle (same as mine)..they must be 2 different issues, just want to be sure before I spend $$$ on trying to fix it..

[keano]

Where are you from mate?