Acceleration Hesitation

[jerry666]

Thanks for the replies. I think in the meantime I will run a few tanks of 98 BP ultimate through it. If it keeps happening I will take it too the dealer. I just have no confidence in them. They led me up the garden path with my piston issue when they knew all along what was wrong.

[brad]

Shouldn't run them on anything less than 98ron.

[ziggyboy]

To OP: Always use 98RON, especially for a CAVD as Australian fuel quality is extremely poor. CAVD in Europe is known to be a 'bullet proof engine' due to fuel quality there compared to ours. FYI

Then doesn't this suggest that it is not bullet proof? It proves that it is only OK with good quality fuel. Wouldn't a bullet proof engine be able to take bad and good fuel?

[jerry666]

Update, just filled up with V Power 98. Driving home, gave it a bit in 3rd started lunging then the engine light started flashing then went out. I am thinking this maybe related to the rings problem. Would a loss in cylinder pressure cause the problems I am having???? I am not convinced there was no damage to the bore when I lost a piston at 60K. I looked at the shop repair log when the service guy went looking for my key, a technician had written he could feel a scratch in one of the bores with his finger nail. But VW decided this was not significant enough damage to replace the engine. Looks like I am calling VW Aust. tomorrow.

[The One]

Then doesn't this suggest that it is not bullet proof? It proves that it is only OK with good quality fuel. Wouldn't a bullet proof engine be able to take bad and good fuel?

So let's just run E10 into everything and see how it goes then?

[ziggyboy]

So let's just run E10 into everything and see how it goes then?

Can you provide examples on where the term "bullet proof" should be used so we're clear? How exactly is the 118TSI bullet proof?

[gazzmo]

I would think only when using a gun and only at the block

[Lucas_R]

"The One" has a bit of a point - the 1.4 twincharge engine is much more reliable in overseas markets than it is here in Oz. I certainly wouldn't call it bullet proof, but it certainly has a better reputation overseas than it does locally. It appears the reason for this is the local tuning of the engine which means that the engine runs very lean to get better economy. Very lean = engine runs hot, detonates and then you end up with a hole in the piston (which has happened to countless 118TSI engines). The detonation is more than likely increased with the 7 speed DSG and it's desire to be in the highest gear possible at all times and labouring the engine.

It would seem that about the best thing you can do if you own a 118TSI is to get someone to tune it - not necessarily for a performance increase, but that way they can richen up the air:fuel ratio to a much safer level.

[ziggyboy]

I don't disagree that there are less problems in colder climates (South East Asian 118TSI's are also problematic). However, the term "bullet proof" in my opinion should be used where the reliability of the said component far exceeds the norm. Even if this engine had less problems in colder climates, does it necessarily mean it far exceeds all other engines in those regions???? I have not seen any proof to suggest that this engine is far superior compared to all other engines in Europe.

[Rawcpoppa]

Does vw run different tunes for each country's fuel?

Over here we only have access to RON 95 and the cavd runs without any issues in 25-36 deg c weather with fuel having a higher sulphur content than that found your 95 and 98 petrol.