Sunset Red 1.4 TSI(TFSI) GT Sport - daily drive & track car

[the bruce]

I also think the old one looks fine. Have you ever measured the coils?

[fuscobal]

It's the same sparks I'll install once my engine work is complete ! HAd them in the past and worked smoother than OEM but were prone to blowing during the cold winters !

[rex]

Thanks guys! The coils are great. They even seem smother than the OEM ones (NGK Platinum).
Holger what do you mean my measuring them?

[the bruce]

I thought of you misfire issues. Have you checked the coils? Guess there might be a way to measure their resistance.

[fuscobal]

Rex, they are smoother also because they are new :)

[rex]

The coils are new. So there shouldn't be a problem there.
I will check for deposits on the valves that might prevent them for closing fully (as I understand this is a common problem with direct infection engines).

[fuscobal]

Yes, it is. After 80.000km mine was choked by deposits. However, now, at 110.000km my engine was clean inside !

[rex]

I now have almost 70.000 km so it might be time to clean the valves. Thanks for the info!
I will check this next week, before another track day at Hungaroring.

[jimk04]

How do you clean the valves.....and keep them clean?!
Cylinder head off or a fuel additive?

[danishmkvgti]

How do you clean the valves.....and keep them clean?!
Cylinder head off or a fuel additive?

Since the fuel never reach the valve stems as it's injected directly into the cylinder there's no idea in using fuel additive for this specific problem 

[jimk04]

Oh yeah !

So head off job?

[rex]

Or use a oscilloscope (I hope this is the English word for it).
I talked to a mechanic and I will use this tool to see if there are deposits ore if I have any problems with the timing belt (mine is on chain so hopefully no problems here).

[rich83]

Or use a oscilloscope (I hope this is the English word for it).
I talked to a mechanic and I will use this tool to see if there are deposits ore if I have any problems with the timing belt (mine is on chain so hopefully no problems here).

I think you might mean a borescope. 

[the bruce]

In German: "Endoskop" to have a look into engine internals. 

[rex]

I made a more detailed search and it seems it is called oscilloscope. It is used on cars also:
http://en.wikipedia.org/wiki/Oscilloscope
http://www.alibaba.com/showroom/automotive-diagnostic-oscilloscope.html
http://www.autoditex.com/Download/Oscilloscope_FAQ_en.pdf

By interpreting the data it will be able to tell me if there are any timing belt problems or deposits or many other issues.