Hello everyone. My car is a 2010 Octavia DSG estate. 2.0 16v diesel with 140 hp (engine type CFHC). About 220.000 km on the clock.

I need some help identifying where this noise is coming from my engine. It especially happens after turning the car on in the morning and when it is colder outside. After a bit of time, it goes away on its own.

The car goes just fine with no problems at all, and no check engine light as well. 

 

Have you got any way of plugging it in? Engine Management light can be off and still have faults:  

 

There are cheap ways with a laptop, a USB KKL cable, and software. Garage last charged me £100 to read a fault code FFS...

My guess is a glow plug issue, but I am pretty new to diesel repairs.

2 hours ago, Davidmb said:

Have you got any way of plugging it in? Engine Management light can be off and still have faults:  

 

There are cheap ways with a laptop, a USB KKL cable, and software. Garage last charged me £100 to read a fault code FFS...

My guess is a glow plug issue, but I am pretty new to diesel repairs.

Would VCDS work? I do have a USB KKL cable.

How can I check if it's a glow plug issue? 

VCDS, or any compatible engine code scanner/reader would be able to tell you if there was an electrical fault, or other - maybe in the glow plug circuit. Often just a pointer to further tests...  

Like I said I am only guessing, and you will need to research more.     

 

Glow plugs in situ, to a degree, can be tested with a multimetre. Plenty of videos on YouTube. 

 

Question is, what would you do if you found out that you have faulty glow plugs?

 

Your vehicle has 220, 000 on clock. It can be a total pain job with some real horror stories if it goes wrong. If you are good mechanically, or can afford to go as deep as the rabbit hole takes you, then maybe but hmmmm.

 

I mean mine had two not even working, and still started - rough idle though, diesel knock, and a risk of glow plug tip breaking off (maybe). 

 

And all this is speculation as I don't know for sure anyway. 

 

Maybe others have better experience or more accurate diagnosis.