jb, it might. It might make it much worse if fuelling map is kak. In my personal opinion it destroyed vRSy's cylinders...

Still 8 times at the dealers is just pathetic, especially within 12 months time...

BTW, my wiper motor went as well. I went to see the dealer at 12 Jan and still waiting for the call as parts are on back order due to suppier change...

EDIT: In bold

Edited 26 March, 201313 yr by Jabozuma

I will be speaking to my dealers about ending my pcp early when it comes up for servicing in a month or two. Got my eye on a Yeti

jb, it might. It might make it much worse if fuelling map is kak. It destroyed vRSy's cylinders...

You talk some rubbish. My map never caused those issues. Having seen a set of pistons that have failed at a Skoda dealership in Derby im happy to say that mine failed in an identical fashion.

Sorry, I should have qualified and have said that in my opinion it did . Can I express my opinion still?

I was just looking for that document I needed on-line but cannot find it now, must be at home. Based on the photos of your failed cylinders it indicates that fuelling problem caused it. It might happen on stock car as well but more fuel in a tuned map makes it worse.

Again, my diagnostics, without having seen wide Lambda data or actual fuelling tables.

Do you want me to edit my earlier post?

Sorry, I should have qualified and have said that in my opinion it did . Can I express my opinion still?

I was just looking for that document I needed on-line but cannot find it now, must be at home. Based on the photos of your failed cylinders it indicates that fuelling problem caused it. It might happen on stock car as well but more fuel in a tuned map makes it worse.

Again, my diagnostics, without having seen wide Lambda data or actual fuelling tables.

Do you want me to edit my earlier post?

I'm really not bothered either way. I saw the VAG technical docs on it which explained the cause being oil blowby or borewash which causes excessive pressure to be applied to the piston rings leading to failure of the rings and or ring landing. I took my piston to physically compare them because if the failure was totally different to that which std cars suffer I would have asked APR to reimburse me. As it happens, Im happy that it wasnt the map at fault.

FWIW googling piston failures and reading uploaded documents pertaining to potential causes doesnt make you a technical guru on all things piston related lol.

Of course it doesn't I was just looking for an illustration based on extensive research by German engineering company.

That VAG is right. It caused by excessive pressure applied to the piston ring by incompressible fluid. This can be coolant (not your case) unburnt oil (probably) or unburnt fuel (certainly). There is one more clue (wonder if they mentioned it in that doc - have you got a copy by any chance?) which is evident on your photos, which in my opinion seals the deal. Did the document mention anything else?

Edit: Actually there are two clues but the second is not that important, just rules out one simple thing.

Edited 26 March, 201313 yr by Jabozuma

Go on enlighten us all.

The VAG techs said the same type of fault can be caused by excessive knock, one of these can be oil in the combustion chamber as a result of excessive oil consumption which in turn reduces the knock resistance of the fuel but that is very unlikely as the knock sensors will retard the timing etc to protect itself so this is extremely unlikely.

Damage to the piston skirts indicate lack of lubrication. This points out to either no oil in the car (not your case) or oil being washed off the bores by either wrong spray pattern (more likely to happen on one side only, but not always) or overfuelling (my money is on that one). Overfuelling is also consistent with your misfires problems. Also the look of deposits on the piston crown would in my humble opinion indicate overfuelling, incorrect combustion and not oil burning per se. If combustion was correct and oil burned then piston crown would have a "combustion pattern" to it.

But hey, I know squat and make things up as I go - always liked Science Fiction

Go on enlighten us all.

The VAG techs said the same type of fault can be caused by excessive knock, one of these can be oil in the combustion chamber as a result of excessive oil consumption which in turn reduces the knock resistance of the fuel but that is very unlikely as the knock sensors will retard the timing etc to protect itself so this is extremely unlikely.

Do not listen to that tech again, detonation damage never looks like that. Your pistons had absolutley no traces of any detonation (knock) damage. They were pristine in this respect, no pitting, melting, your spark plugs had no alu deposits on electrodes either (or am I imagining you showing plugs photos?) Has you ECU logged any detonation detection?

Ring landing breaking is caused by two things I know of, one described above and the other is ring installation error. THe pattern of the broken landing you showed eliminates ring installation error.

What your neglecting to accept is the failure on my piston was IDENTICAL to that of another failed vRS piston that had been removed and replaced from another Fabia which was 100% stock and had much less mileage, as it happens they never caught this car in time and the result was a new engine required.

So what happened to mine is the same as what has happened to stock cars.

Damage to the piston skirts indicate lack of lubrication. This points out to either no oil in the car (not your case) or oil being washed off the bores by either wrong spray pattern (more likely to happen on one side only, but not always) or overfuelling (my money is on that one). Overfuelling is also consistent with your misfires problems. Also the look of deposits on the piston crown would in my humble opinion indicate overfuelling, incorrect combustion and not oil burning per se. If combustion was correct and oil burned then piston crown would have a "combustion pattern" to it.

But hey, I know squat and make things up as I go - always liked Science Fiction

The fact of the VRS 'oil issue' matter lies within the VW technical dept.

They know the engine was suspect and then had several modifications to hopefully alleviate the issues. Yes, those issues were with standard cars.

I have the CAVE engine.

Anyhow, since the plugs have been changed, it goes like a 200bhp small car with a cattle prod up its bottom

What your neglecting to accept is the failure on my piston was IDENTICAL to that of another failed vRS piston that had been removed and replaced from another Fabia which was 100% stock and had much less mileage, as it happens they never caught this car in time and the result was a new engine required.

So what happened to mine is the same as what has happened to stock cars.

You are right, it would be unreasonable to contribute it all to the map being crap. I do not think it was really, it was just built "on crap foundations". They were right in assuming factory map was ok and right on not expecting problems. Afterall stock cars do not suffer from high rev misfires, cold idle yes. I think it is a problem with twin chargers-the fuelling. Whether it is caused by faulty map or faulty injectors I do not know...that is why I asked you if it would be possible to see the fuelling trim tables from your car. Wideband lambda sensor data would confirm it. The only certain method would by to take fuelling system to the lab and test it...

I am going to it in a round about way by sending engine oil sample to be LAN tested and diagnosed and I will a nuke in my arsenal should it come to discussions with SUK at any point .

I'm not moaning about anything. If you had been back to the dealer 8 times in 12 months, you'd be miffed. Don't be so ******* patronising.

The oil usage has nothing to do with a remap you idiot.

What you are doing is telling everyone that they own a crap car just because you have had a bad experience. Yes i would be miffed, i have had cars like that in the past, i got rid and moved on. Incidentally, you cannot possibly know what damage you have caused to your VRS by tinkering with it, it's a risk everyone takes when they play around. I suppose you don't use more petrol driving fast, or go through more tyres and brakes cornering and braking harder either?

My view of my car is my opinion, i don't need to be sworn at (virtually) for expressing a positive experience.

a nuke in my arsenal should it come to discussions with SUK at any point .

Jabo I'm seriously worried about you lol! It's almost as if you want your vRS to develop oil issues so you can go into battle!

What you are doing is telling everyone that they own a crap car just because you have had a bad experience. Yes i would be miffed, i have had cars like that in the past, i got rid and moved on. Incidentally, you cannot possibly know what damage you have caused to your VRS by tinkering with it, it's a risk everyone takes when they play around. I suppose you don't use more petrol driving fast, or go through more tyres and brakes cornering and braking harder either?

My view of my car is my opinion, i don't need to be sworn at (virtually) for expressing a positive experience.

Once again, you're an idiot.

I have expressed my opinion about my car based on several bad experiences.

EVERY issue was a fault with the manufacturing and you seem to keep banging this drum about 'tinkering' etc.

The remap is an increase of 10%. This may cause an issue with an already dodgy engine (which the CAVE engine clearly is) but is absolutely not an issue for a normal engine. I've had 3 previous cars all mapped between 20/30% increase without EVER an issue.

No oil issues, no rough idle, no misfires, no engine management lights, no EPC lights etc.

These Skoda/VW issues are on loads of cars across the family and are not exclusive to mapped cars. The issues are all prevalent on STANDARD cars, so stop talking crap about' tinkering' etc and sitting on your ivory tower :wonder:

I've been debating "downgrading" to a Swift Sport but maybe a newer one so it's 6 speed. My brother has the old one and he let me drive it home from Brecon a few days ago. I laughed all the way home. It's hysterical fun. Not as much power as the vRS but it really didn't matter. Had no problem overtaking things and corner entry speed was just as high as my vRS and gave loads of confidence when blasting out of corners to the next one. You can't beat the sound or feel of a N/A engine. It does have a few things I would change but if I did get one the slippery slope of modifying would begin as there's quite a few things you can do to make them handle even better.

Maybe you should also consider the Fiat 500 1.4 Sport, as this has a 100 Bhp normally aspirated engine mated to an excellent 6-speed box, and although no Abarth (which has a 5-speed box and a turbo of course) it's great fun to drive. Up rate the shocks and dampers, get one of the recommended air induction kits, and it's smiles all round. You can't get a new one - the last ones were on an 11-plate I think. It's a shame Fiat stopped making them IMO, as decent N/A engines that sound great are becoming something of a novelty in new cars. 7 k should get you a nice example and I don't think there's a prettier small car, although might be too small for your needs.

I had a ford orion. 4 years old and rust rust spots coming through on every panel. I will Never have another one. Lots of other mechanical niggles too.

Fix

Or

Repair

Daily

I had a ford orion. 4 years old and rust rust spots coming through on every panel. I will Never have another one. Lots of other mechanical niggles too.

Fix

Or

Repair

Daily

Careful angry jonny will call you an idiot for disagreeing with him!

Ive had an XR2i, RS1800, XR3i, Mondeo 2.0, Mk1 Mondeo ST24, Mk2 Mondeo ST24, Mk2 Mondeo ST200, Mk3 STTDCI, Scorpio Cosworth, Mk2 Focus ST, all were second hand and well above 60k when i bought them and abused them the entire time I had them. Never had to pay a penny other than servicing and taxing.

Now VAGs on the other hand Mk4 Golf GTI, Audi Coupe, Octavia vRS, Fabia vRS all have cost me money with problems and all had MUCH less mileage on them and were much newer.

Ive had an XR2i, RS1800, XR3i, Mondeo 2.0, Mk1 Mondeo ST24, Mk2 Mondeo ST24, Mk2 Mondeo ST200, Mk3 STTDCI, Scorpio Cosworth, Mk2 Focus ST, all were second hand and well above 60k when i bought them and abused them the entire time I had them. Never had to pay a penny other than servicing and taxing.

Now VAGs on the other hand Mk4 Golf GTI, Audi Coupe, Octavia vRS, Fabia vRS all have cost me money with problems and all had MUCH less mileage on them and were much newer.

WOW That many fords and no mechanical problems. I`d do the lottery if were you.

WOW That many fords and no mechanical problems. I`d do the lottery if were you.

I prefer to laugh at peoples ignorance tbh.

People misconstrue the VAGs build quality and high residuals as being the same as reliability. VAG very rarely do well in any reliability surveys and typically fall behind the likes of Ford and vauxhall on that front. Yes VAGs have a quality interior above that of the likes of Ford/Vauxhall etc but they break down just as much if not more often and typically cost more to fix.

Im very open minded about cars and buy them on merit irrelevant of badge, I have had a whole manner of cars above and beyond that of the Fords and VAGs that i posted above so apretty fair background to base my opinion on s well. There is a world outside of VAG!!

Once again i am called an idiot for having an opinion......yawn

Tinkering means 'casually playing with something to improve or mend it' Jonny boy, you have tinkered. Fact.

My engine is the CAVE series too, it uses no oil and has no issues. Fact.

Remapping any car puts extra strain on it, whether it's 10 or 30% Fact.

I have just had my Smart Fortwo mapped, the map is fine, but it's spent the last week in the garage with a 'limp mode' fault.

The map has put extra strain on the engine causing a fault to occurr that was under the radar before. Fact.

If tinkering did no harm, then it would not invalidate your warranty.

It's a shame your having problems, i'm not. No ivory tower, just a cracking little motor. My opinion. Fact.

Anyhoo, a new review of the ST.

http://www.caranddriver.com/reviews/2014-ford-fiesta-st-hatchback-first-drive-review

I read in The Sunday Times that the US version has an extra 20bhp - probably offset by the lard-arses that'll be sitting it

Jabo I'm seriously worried about you lol! It's almost as if you want your vRS to develop oil issues so you can go into battle!

You know me, I do not shy away from a good scrum . I know my $hit and have an "engineering intuition" on top of that which is yet to let me down. Becasue of that when I "have a feeling" something is out of order I dig, research, do tests to prove it to all the "techs", "engineers" and all other manner of people who proclaim their ate their teeth on the subject and tell me to the contrary - nukes come handy then, can't argue with them !

Funny thing is I am quite glad when I can be proved wrong as it means I learned something new and potentially valuable:).