Slow death of a 118TSI

[Brendan_A]

^ correct me if im wrong, but i think "Pilots" car is a manual which seem to have a much better reliability rate than the DSG ones. Because the DSG always wants to be in the highest gear possible i believe they labour the engine and cause the engine to detonate (under load at low RPM) much more easily than the manuals.

My brothers mk6 118tsi manual (which use to be my old car) started missing firing cylinder 4 really bad last Friday night just got diagnosed with low compression.

Car has had all software updates alway run on 98ron and never laboured. Didn't show any signs and failing, still had good power.

Lucky I sold it to him with extended warranty as the warranty got approved this afternoon and it's getting a full rebuild.

Car has done 44k Kms.

[Cossor]

So I hope after all your work, you really do get to enjoy your Golf.
I enjoyed my 118TSI but became very concerned with all the reported problems.
So when my son wanted a 'no interest' loan for new car.
I gave him the Golf instead, and bought a Passat. I thought it would be even more comfortable
Passat good car, but hard suspension not suited to bumpy country roads.

[Pilot]

So I hope after all your work, you really do get to enjoy your Golf.
I enjoyed my 118TSI but became very concerned with all the reported problems.
So when my son wanted a 'no interest' loan for new car.
I gave him the Golf instead, and bought a Passat. I thought it would be even more comfortable
Passat good car, but hard suspension not suited to bumpy country roads.

Try Joms maxed out in a 118.... One would think you're being jumped on by a thousand leprechauns

[Lucas_R]

Slow death of a 118TSI

Lucas do you know if anyone has stats for the 118? In terms of failure rates? If lean is really an issue there should be a continuous stream of complaint threads I gather.

Here is some of the info i promised

This is a MAP table from the stock tune, posted up by Mark from Recode in Sydney. He is on this forum as well as several others - he knows his tuning and knows VW's. Cant run much leaner than that: Parso's Golf R... - Page 191 (if you read the previous page he talks about how lean they run).

[Lucas_R]

My brothers mk6 118tsi manual (which use to be my old car) started missing firing cylinder 4 really bad last Friday night just got diagnosed with low compression.

Car has had all software updates alway run on 98ron and never laboured. Didn't show any signs and failing, still had good power.

Lucky I sold it to him with extended warranty as the warranty got approved this afternoon and it's getting a full rebuild.

Car has done 44k Kms.

Sorry to hear mate - thankfully you have the warranty to fall back on and your brothers car will get a rebuilt engine.

I bet piston no 4 has a hole in it (due to detonation). Piston no 4 seems to always be the one that goes bang.

[Rawcpoppa]

Here is some of the info i promised

This is a MAP table from the stock tune, posted up by Mark from Recode in Sydney. He is on this forum as well as several others - he knows his tuning and knows VW's. Cant run much leaner than that: Parso's Golf R... - Page 191 (if you read the previous page he talks about how lean they run).

Thanks. This is good info.

[Rawcpoppa]

Lol maybe I should change my post to this is scary info!

[Pilot]

Lol maybe I should change my post to this is scary info!

Lol...

[Rawcpoppa]

Can anyone say what a faulty n80 valve does on these engines? Is it just for emissions or does it affect the car's performance?

[Reedy]

Can anyone say what a faulty n80 valve does on these engines? Is it just for emissions or does it affect the car's performance?

My n80 purge valve caused no driving issues except if you sat still with the car running and lightly pressed the throttle it would jump straight to 1400rpms and miss the ones in between, so no smooth acceleration. No engine light but got a soft code for incorrect flow. Clearing this code has fixed the issue for me.


Ozzy

[Mk R]

Revised this year so take that for what it is worth. Last revision was in 2011!

[ATTACH]12975[/ATTACH]

Thanks for that!

I decided to have a closer look at the engine and had a dry compression test, which showed 175, 175, 140, 155. I'm leaving it for a couple of weeks regular driving before doing it again to test for deterioration in cylinders 3 and 4. Also appears to be a bit of a leak on the turbo somewhere. I'm tossing up whether a switch out for a used 2012+ low km motor or go for the rebuild should the condition deteriorate. Any opinions on that?

Also, I'm running APR stage 1 and have found the 95 RON and 98 RON maps to idle quite rough on cold startups. I've actually taken to switching to stock mode which is much smoother on cold and then switching over once warm.

[Pilot]

They do idle like crap when cold but that fixes itself fairly quickly

[Mk R]

By rough idle I mean you can feel a slight shudder from the engine when you are stopped... Its just a slight vibration kind of that you can feel in the seat... and then it will misfire eventually

Did that rough idle resolve completely with the coil pack replacement?

[Pilot]

It did when warm, but cold is still the same lol

[Mk R]

Yeah that lean run at the beginning is savage.