Here's a link to a post on this forum where someone also had a 1.6 SR engine with a knock sound - and it turned out to be a loose hose on the air pump...perhaps you have the same issue?

https://www.newbeetle.org/threads/engine-knocking-badly-at-the-first-cold-start.63313/

 

Thank you for your answer. I read it carefully, my problem only occurs when the engine is warm. Just in case, I will also check the place. Best regards

 

Just to cover the simple and most obvious but sometimes easily forgotten. Is your oil level within the proper range on the dip stick?

 

Yes, I checked it many times. I also changed the oil 10w40. Unfortunately, it did not help

 

How many miles on the engine? Have you dropped the oil pan and removed the rod and main caps, to inspect the bearings?

 

I haven't done this yet. I think the problem may be the wrong oil. I bought the car recently. It has done 220,000 km (140,000 miles). I don't know what oil was used. I put in Motul synthetic 10w40. I know what you mean when you ask about the valve cover. I also think it may be the hydraulic tappets.

First of all, I will change the oil again to semi-synthetic
what do you think?
best reg
ards

 

You need to look at your owners manual to see what oil the car requires and use that. I know a lot of the cars here stateside take 5w40 synthetic but not sure on the 1.6 as we don't get that here.

 

I guess the question should become where is this “knock“ coming from can you pinpoint your source? A cheap set of “mechanics stethoscope “ might help you figure out where the actual noise is coming from; on high mileage engines many times the lifters get clogged up and get noisy. In that case, you might want to try running some product like seafoam; when added to the oil, this can really quiet things down and clean out, dirty, lifters, etc..

If you actually have a “rod knock”; the damage is already done with the bearings and it doesn’t matter what brand of oil you use, it won’t fix that problem.

A product like seafoam is relatively inexpensive and you can see if that helps with this particular noise, you are describing and it could be something like a Hydraulic stuck lifter, etc.

 

Mechanics stethoscope:

Google Search

Seafoam engine treatment:

Google Search

 

I think your advice is helpful. I have a car stethoscope and really no sick patient at the doctor's has ever been so deafened 😁 The sound spreads throughout the engine but the most knocking is precisely on the plastic part of the EGR valve. Where the plug is connected. It's very strange because as far as I know the EGR valve either opens or closes. It doesn't work by knocking. Secondly, it knocks evenly only at idle speed. Disconnecting the EGR plug doesn't change anything.

I just hope it's not the crank bearing, but then the knock would be heard from the bottom of the engine.

Finally, I'll ask again about this EGR. Can it knock? I've already bought an engine flush. Only my daughter drives the car and it's terribly difficult to take it from her 😉 even when I explain that it's better to find what's knocking, she says that dad will fix it 🫣
This week I'll pour out the flushing fluid and change the oil.
best regards

 

We don’t have the 1.6 L here in the USA; it was never installed on North American vehicles as far as I know.

Can you take some photos of the EGR location and maybe make a video of the noise with your phone and post a video to YouTube, then provide us a link to see and hear what noise, you are referring to? Thanks!

 

Thanks for the reply. I am very surprised by the help on this forum. I know that in the US there were New Beetles with larger engines. Thanks even more. I will try to record the sound this weekend.

 

I don't think the 1.6 SR was available in the USA? The 1.6 SR was limited to certain countries as far as I know - of which some examples are: England, Australia, Japan, India.

In the USA and a few other countries there was a 1.6 Diesel maybe?...whereas the 1.6 SR is a petrol/gasoline engine.

 

From 1998 to 2005; in the USA the engines were the 2.0 L (gas), 1.8 turbo (gas) and the 1.9 L TDI (diesel).

 

I looked into it a little more...and it seems the 1.6 TDI was in the later A5 Platform VW Beetle - not the 1997-2011 VW New Beetle after all.

In Australia...The VW New Beetle didn't arrive until early 2000 and was sold until 2011 (although I think some VW dealers still had them
in stock until 2012).

The 1.6 petrol/gasoline engine was available the entire time...as was a 2.0 petrol/gasoline option (although a different 2.0 was used
from maybe 2004 onwards).

The 1.8 turbo gasoline/petrol was available from 2001 until the first half of 2005...and a 1.9 turbo diesel was available from the
second half of 2005 until 2011.

No other engines were available here for the VW New Beetle...and we unfortunately missed out on the 2.3 V5 and 2.5 I5.

I don't think any of the VW New Beetle RSI (only 250 units produced) with VR6 engine were sold new here either?

Australian sold cars are right hand drive - and all of the VW New Beetle RSI cars were LHD...so I'm pretty sure none
were sold to the general public through a VW dealership here.

 

Yes you are right. My 1.6 petrol engine was offered in Europe at the same time as 1.4 petrol, 1.8 turbo and 2.0.
Diesel only 1.9

If I find the cause of the problem in my daughter's car, maybe I will look for a 1.8 Turbo for myself. They had 150 horsepower but could be tuned up to 180-200 horsepower. I think that would be fun 😁

 

Wow...I didn't even know there was a 1.4 engine available for the New Beetle - and had previously only ever heard of the 1.4 TSI in the later A5 Platform Beetle.

If you get a VW New Beetle with a 1.8T engine, I'd strongly recommend getting one with a manual transmission - as the '01M' 4 speed automatic transmission that came behind the 1.8T models
is a terrible piece of junk that people constantly have trouble with, and can be a costly to replace or rebuild.

I'd also suggest you look for a 'Turbo S' New Beetle if they are available in your country...they have the 1.8T engine (180 hp version), and a 6 speed maunal transmission...plus nicer wheels,
interior, and bumper covers/lights etc. (plus several other changes over a regular 1.8T New Beetle).

Here's some interesting VW New Beetle 'Turbo S' video links below:

 

I'm from Poland. Even 1.8 would be ok. 😁

 

Here's a link to an old thread on this forum where someone from Poland is saying that they have a New Beetle Turbo S (the pictures are missing though)...it seems that they were available in Poland?

https://www.newbeetle.org/threads/new-beetle-turbo-s-poland.44573/

 

Hello. If this version was available in Europe in those years, you could probably buy it in Poland too. On the other hand, the world is very small now. Importing cars from all countries of the world is not a problem. Now I can easily buy any car imported from the USA. The problem may be taxes 😁

 

I recorded a video. After warming up the engine works like a diesel. Only at idle speed. Turning on the air conditioning causes the knocking to stop. I changed the oil. No effect

 

The A/C compressor can develope a knock noise when it gets old...so possibly that is your problem and not your engine?

Here's a video below of a VW Tiguan with it's A/C compressor knocking to compare the sound of to your issue.

 

Thanks, I'll check it out
That would be good news.

 

If you think it could be a component like the AC compressor on the belt path; You could remove the serpentine belt, then restart the engine and see if the sound goes away. That would be a quick and easy process of elimination; if the sound goes away, then obviously it’s an external component issue and if not, then you would need to focus on the engine once again.

Do you have any current trouble codes with this engine?

 

The only fault code is for the EGR valve. I'll take the belt off tomorrow. I'll post the results.
regards

 

Can you post with the trouble code is? thanks!

 

Witam. Nie mogę wykonać adaptacji EGR i mam takie błędy

 

sorry, I wrote the answer in my language 😁. Thank you

 

I used Google Translate - and the previous message reads: "Hello. I can't perform EGR adaptation and I have these errors".

 

sorry, I wrote the answer in my language 😁. Thank you

 

http://wiki.ross-tech.com/index.php/17811/P1403/005123

 

Thanks, I don't think that should be the cause of the knocking. I'll have to deal with that problem later. Do you think the EGR valve could be knocking?