New engine noise

[PowerDragon]

Hi all, I'm new here. Need some advice please for my sisters car.

Just had it's first service after being the new owners, and I provided all the parts to garage to carry it out.
I followed the service manual and got all the correct parts and spec/grade of oil.

After this service, the engine makes a louder noise at start than it did before. This lasts for about 1 min, then slowly quietens down.
Never had this since buying the car. Sounds like very noisy tappets, don't know why though.

Is this something to be concerned with? When we took it back to the garage, it obviously didn't have the problem then.

The car has done about 59k. Does it require a thicker grade of oil at this point? I'm wondering if the last service was done with a thicker grade.
I just want to find some resolution and stop worrying, so that if anything, it can be dealt with early.

Appreciate any advice

[2226]

Can you upload a video to YouTube of it making the noise? Might help others identify it.

[PowerDragon]

Hi, ok, good idea. I'll try and get that sorted asap. Thx

[RUM4MO]

Can your confirm which engine is fitted to that car, ie 1.2 normally aspirated, 1.2TSI 8V or 1.2TSI 16V.

If it is the 1.2TSI 8V then the garage might have left the old oil filter O-ring in, so it has now got 2 O-rings in!

[wolfie]

Can your confirm which engine is fitted to that car, ie 1.2 normally aspirated, 1.2TSI 8V or 1.2TSI 16V.

If it is the 1.2TSI 8V then the garage might have left the old oil filter O-ring in, so it has now got 2 O-rings in!

You beat me to it. That was my first thought.

Little guide here, on what to look for.

https://www.mpulse.mahle.com/en/do-and- ... filter.jsp

https://www.briskoda.net/forums/topic/4 ... new-chain/

[PowerDragon]

First of all, really sorry about the delay is getting back. Sister has been really busy and now as the season winds down,
I've had a chance to record the sound.

I borrowed a audio fieldrecorder from a mate and used that to create an mp3, which I have uploaded here:

http://s000.tinyupload.com/index.php?fi ... 6813255024

I do hope this is allowed and ok. The file is about 2MB, so quite small.

The engine is 1.2 normally aspirated.

Thank you so much

[RUM4MO]

Yes a bit of tappets noise that dies away a bit with time, as long as your garage used the correct spec of oil it should be okay.

I have never had a car with that engine, but I believe that they can be a bit noisy as they grow older, same as the 1.4 16V 4 cylinder ones in that respect.

[PowerDragon]

Yes a bit of tappets noise that dies away a bit with time, as long as your garage used the correct spec of oil it should be okay.

I have never had a car with that engine, but I believe that they can be a bit noisy as they grow older, same as the 1.4 16V 4 cylinder ones in that respect.

I see, It's just that for a petrol car the sound has become very obvious, like we don't look after it, even though it 2011 but only done around 55k.

I realised this was her second service with it, and I buy the parts myself and give to the garage to fit/change.
Looking back at the parts list, for our first service I brought Petronas Syntium 3000 5W40.
This time around I brought Shell Helix Ultra 5W40 and this was when the noise developed.
Both fully synthetic and to spec of this engine.

Could the brand of oil cause such an issue?
As previously there was hardly any noise, and now even when the engine is warm/hot you can hear, what I think more than it should be.
Just a concern I want to address, if any.

Thx for the input

[littlepolo]

Just found this post. I have a 9N 1.4 16V BBY Polo and have experimented with various types of oil through periods of correct engine running and through problematic engine running. I have no experience with Syntium but Shell Helix in general seems slightly 'thinner' and results in a noisier engine than say Fuchs, Quantum, or Castrol Magnatec - all 5W40 (I'm using the latter at the moment). Centistokes are the units used to report the kinematic viscosity of motor oil at high temperatures and if you look at the technical specs you will find Helix is slightly lower than some other oils. That might not be the whole explanation but it was enough for me to switch from Helix (which is very good at cleaning) to those above. I have also experimented with Ester based oils and they do quieten things down quite a bit, but do not make economic sense for a road car (they probably don't meet VW specs or clean so well either).

It is possible that your vehicle had a 'thicker' oil in it, also that ambient temps (i.e. cooler weather) accounted for some of the noise on cold start. Oil change history and oil level being correctly maintained will have a bearing on overall health of the engine and noise in future. I change oil and filter every six months due to the vehicle being used mainly for a daily commute of approx 20 miles round trip.

If the noise reduces after a minute or two as the vehicle warms up and oil circulation gets under way you should be fine.

[CarbonChaos]

I have to disagree with your statement about Ester based oils and there cleaning powers
If you want a clean engine after 100K do regular oil changes with any quality modern synthetic oil.but Ester has been engineered at molecular level .
. LUBRICITY
Polarity causes the ester molecules to be attracted to positively charged metal surfaces. As a result, the molecules line up on the metal surface creating a tough film with enhanced adhesion properties.

That translates into a strong and persistent film providing superior lubricity, lower energy (fuel) consumption and reduced wear.

• VOLATILY

The polarity of the ester molecules makes them to be attracted to one another. This intermolecular attraction requires more energy (heat) for the esters to shift from a liquid to a gaseous state (evaporation). As a result, the oil will keep longer its viscosity and quality. In addition, oil consumption by evaporation will be reduced.

• DETERGENCY AND DISPERSENCY

The polar character of esters also makes them good solvents and dispersants. This allows the esters to solubilise and disperse impurities such as combustion residues and oil degradation, by-products that might otherwise dispose as sludge or varnish deposits. These properties result into cleaner operation and improved additive solubility in the final lubricant. Cleaner engine or transmission systems will be the consequence.

[littlepolo]

Always polite to quote references: https://xenum.com/en/home/company/technology/ester-oil/