All of the basic engines on the Golf diesel are fine, the 150PS unit in the Golf 4 had issues with cam follower failure, some early 115PS versions failed in a big way with their con rod small ends and all the TDI's suffer from turbo issues, especially the Golf 5 140PS version BUT having said that the main block/head and extremely strong.
|
I would generally agree with you, but as usual from VAG, the route to a reliable engine is a complicated one.
The basic engine is very strong and long lasting given correct basic maintenance but the later PD engines suffered from "development" (cost cutting?) of the basic design which for me, makes the product less useful. The change from Bosch solenoid actuated to Siemens piezo actuated injectors for the later PDs is probably the best example, and there are some others.
I rest my case - one of the last 1.9 PDs with Bosch solenoid injectors and no DPF is the engine to have if low running cost is important to its owner.
Crasher, did you verify my observation that the cambelt tensioner nut tightening data is in fact moulded onto the upper belt cover on the 8V PD engines? I've looked at the recommended torque for an M8 nut in this position on engines made by others and the VAG figure is the tightest by a very long way. PSA recommend 20 Nm. Draw your own conclusions...
659.
|
The reason for the change of injector design was that the 4 valve per cylinder layout did not allow room for the type used on the 8 valve, Siemens really screwed up with the Piezo injector manufacturing, a good basic design compromised by cost cutting as you say.
The real killer on all engines is extended drain oil change intervals, this was a marketing ploy that backfired, it is simply not possible to make the oil protect for 20K miles without some loss of protection. Nearly all my customers are on Platinum oil and 1 year/9300 mile intervals (except the 150PD which we recommend at 5K) and PD lifter failure is a thing of the past. Some customers do 20K or more a year and they insist on keeping these intervals, I don't argue as I will probably be making out the bill for a new engine in a couple of years. The lasted DLC treated lifters are also proving to be extremely good.
We have done a lot of 8v PD cam belts in the past few weeks and I still have not seen one with the tensioner torque spec on it.
|
Hi
I always read these detailed articles with great interest. Just a couple of questions out of interest / curiosity if I may (forgive the somewhat random nature of some of the questions, but I want to capitalise on the opportunity while there are a few very knowledgeable people fresh in discussion):
1. With regards to the VW CR 2L TDi, would there not be enough examples driving around by now to get a very good idea of whether this is a reliable engine or not? It’s used in so many applications and it’s been around for a few years now (I think).
2. In terms of the CR injectors being reliant on the fuel for its lubrication (I think 659FBE has raised concern about this somewhere), surely we must know by now how long these injectors will last as many other manufacturers (Fiat, BMW, Mercedes etc) have used CR system now for the better part of the last 10 years or so.
3. I have a 1.9 TDi Seat Altea XL with code BXE. Think it’s a much underrated car and it’s still running like clockwork after 5 years and 106k. I do maintain it by the book and then some though. Should I worry about this engine? I just ask because if I listen to what you guys always say it sounds like this one doesn’t fall into that vintage bracket you always talk about.
4. And now slightly off the diesel track following on from another thread – VW 1.4 Tsi. I drove a Passat 122ps DSG version in Germany about 3 or so years ago on holiday for 2000 km. Pulling very quietly and smoothly like an Ox from idle speed with 4 adults in a Passat – I thought it was the best thing since sliced bread. We achieved circa 42 mpg on that trip, which I thought was phenomenal at the time. Now I read that the engine has problems like time chains breaking etc. And on the twin charger there’s all sorts of horror stories. Can I assume that by now VW would be aware of these issues and that they would have sorted all these issues? So if I buy a 2011 or 2012 model second hand in 4 years time it would be fine from a design point of view. Rock solid like my other old car the Fabia 1.9 SDi, which I don’t think you’ll be able to nuke to death if you try. Or is that wishful thinking?
Would love your comments. Thanks
|
VAG have just won the Golden Carrrot award this year its awarded for the biggest disaster of the year in motoring inGermany.Its for the chain in the 1.4tsi.
|
Lots of points to think about here - the situation is very complex and the financial penalties for buying the "wrong" engine from VAG can be dire in view of most customer experiences with design problems out of warranty. I'll throw a few general points into the hat:
The great advantage of the PD as an operating system for a diesel engine is that the cam/roller follower system which any diesel fuel pump has to have, is oil rather than fuel lubricated. Injection pressures on all diesels are now so high (in order to achieve smoke and efficiency levels) that these components are highly stressed. In a common rail engine, the fuel pump is fuel lubricated - making the lubricity of the fuel a critical factor. They don't like petrol...
PD cams and followers last for ever - even if you use the wrong engine oil, it's the valve cams and followers which suffer damage.
The common thread here is engine development, and it's my deduction that VAG have run out of experienced engine designers - maybe those who detailed the original 1.9 PD have retired. The PD engine was, in my view "wrecked" by the switch to Siemens piezo injectors which will not tolerate sooty (conductive) engine oil and there have been other, equally fundamental changes from the 1.9 which do not meet my criteria for reliable operation. Chain drives are the best example.
The first 2.0 PDs for N-S installation (Audi) had twin Lanchester shafts chain driven from the crank. A recipie for failure due to torsional oscillation - and they all did.
The VAG "chain" engineer was evidently not pensioned off as other chain camshaf drives have appeared (see above post) which, quite evidently to me, have been designed with no regard for the dynamic forces under which they operate. Internal combustion engines are not electric motors.
I'll stop there - but suffice it to say that other than the simple oil pump drive on the 1.9PD (which lasts for ever - no torsionals), I have yet to see any chain drive from VAG which I would spend any of my own money on. Pity - bring the experienced engineers backout of retirement.
The current V6 VAG diesel engine is the worst example of a chain drive I have yet seen - complete disaster in my view. Google "VW SSP 325" (select quick view) and look about half way through for a drawing...
659.
Edited by 659FBE on 23/12/2012 at 13:22
|
Thanks for all the comments. It's a shame, my current run around (Fabia 1.9 SDi) will still go for a long time I'm convinced, but it is already 10 years old and I fear the body will rust away around the oily bits which seem to be strong. The family car (Seat 1.9 BXE) is also still good, but I will have to replace them at some point in the next number of years. Sounds like it's not going to be with a VAG 1.6 / 2.0 CR TDi or the 1.4 Tsi. Mercedes engines I don't trust and BMW may or may not be good, but both are too expensive for the likes of me. Honda probably have a tough new 1.6 diesel, but they sadly stopped with the FR-V, suppose I can still go for the new civic as a replacement for the Fabia. Toyota Verso diesel is probably the other safe option. There's perhaps also the Nissan Qasqai + or the Ford C / S Max. Though I wonder whether these above mentioned cars are really that much more reliable than VAG's new CR diesel - are they? From what I see the Prius is very reliable and you now get a 7 seater, maybe that's the future then - electrical motor + Atkinson engine what can go wrong.....
Oh, almost forgot, the 1.4tsi won that award this year, was that for engines manufactured a number of years ago and are now showing their weak points or was that for engines manufactured in 2012 - or are they all teh same unchanged?
Thanks again
|
That is for all FSI manufactured upto the middle of 2012 believe me to win the Golden Carrot award from Autobild you have to very very bad.
|
Thanks Collos, you would not have a link or something? Can we assume they will fix this at some point or will they just continue building these faulty engines?
Forgot to ask 659FBE earlier, let's imagine you must replace your 1,9 Superb now with something build in the last 4 years what would it be?
Cheers
|
To answer the question above, I just might take a chance on a VAG CR diesel - but only after comprehensive Internet (and soul) searching for potential problems. This would satisfy my geneal liking for diesel engines both in terms of their inherent thermal efficiency and their ability to do my job which is towing and motorway cruising. For both of these applications, a high torque and highly (top) geared prime mover is a definite asset.
If my searches suggested the likely probability of DPF or timing drive or HP fuel pump failure, I would go for a petrol engine. This might well be Japanese, as they make these engines well. I'd find Japanese fittings, furniture, displays and ergonomics difficult to live with though. Their cars don't say "executive" on the boot lid any more, but the idiom is still there.
659.
Edited by 659FBE on 24/12/2012 at 15:34
|
Thanks Collos, you would not have a link or something? Can we assume they will fix this at some point or will they just continue building these faulty engines?
Forgot to ask 659FBE earlier, let's imagine you must replace your 1,9 Superb now with something build in the last 4 years what would it be?
Cheers
www.autobild.de/bilder/die-moehren-des-jahres-2012...l
Think this is the link,
|
What year / month did piezo injectors replace solenoid injectors in the 1.9 engine?
Would I be correct in assuming that it took place at different times for different models? And if so, when did it happen for VW Golfs?
|
As far as I know the 8v still uses solenoid injectors. The BKD is the most numerous 2L 16v unit and these suffered turbo, dual mass and cylinder head problems but generally are a very reliable unit.
|
Hi guys
Sorry to retrieve this old thread but I have a question that is related.
I am looking at buying a '57 Altea 1.9 diesel 105bhp. Having looked at the Vin i'm pretty sure the engine was a bxe but I am only going on memory.
Is this the VAG engine that has Bosch injectors?
Is there anything else I should be aware of if i purchase the car?
Thanks for all the info above, all good to know
|
As far as I know, all of the 1.9TDI engines had Bosch injectors (some correct me if I'm wrong!), so you should be safe. I'm sure, however, that I've read about some issues on either the BLE or BXE engines breaking con rods (have a search on here/google it) - seemed to be specific to SEATs (not sure if BLE/BXE engines were SEAT only?) and SEAT dealers were trying to blame owners not keeping the oil topped up.....
Anyway, as the OP of this thread, I'll add that my time with VW diesels has now come an end. The 2.0TDI was just one of many reasons why it was time for me to ditch VAG, so went for a Mercedes C-Class 220 diesel > proven engine, timing chain as opposed to a belt and an autobox so no failing dmf's.
|
I'm pretty sure that all PD injectors are Bosch
Edited by balleballe on 16/04/2013 at 11:26
|
They're not.
The 2.0PD when fitted with a 16V head (not all were) had Siemens piezo actuated injectors, some of which became the subject of a recall. This was due to sudden and unpredictable engine stoppage, probably caused by conductive oil ingress.
To the best of my knowledge, all PD engines with 8V heads (which also means all of the 1.9s) were fitted with Bosch electromagnetically actuated injectors. These are reliable.
659.
|
Sorry - I forgot about that 2.0PD
|
So a number of years on, what is the consensus of the 2.0 CR engine found in the Audi A4 estate found in the B8's?
I'd really love the look of them and the boot space is very handy.
Info/advice will be very appreciated.
Edited by sausagepilot on 12/02/2017 at 09:48
|
Just googled the BXE engine/con rods issue you mentioned and there definitely appears to be a common problem here given the age and mileage of the vehicles it is happening to. I was on the verge of making an offer until I read your message, looks like I owe you (and others) one!
The question is what the heck do I look to buy now?!
|
No problem Lewis77 - that's what the forum is for :-)
The 1.9TDI PD engine is a good lump, but seeing as you're looking at an Altea, I assume you also want space? I'd seriously consider a Skoda Octavia Estate - a mate has got one and it is brilliant. Well put together, and does everything well that it says on the tin. Stay away from the Golf Mk5 - bag of ****! Even though it is available with the 1.9TDI, my own personal experience was awful build quality, rust issues on the front wheel arches and an interior that looks tatty fast.
Pesonally I'd look at a Hyundai or a Kia. I continue to be impressed by the cars they produce and you've got a good warranty with them - they just seem to get better and better.
|
Cheers CWS the last car I bought was a lemon and i'm determined to avoid doing the same! Yes you're right I do want something with space, the Altea is by no means something I must have I just want something solid and reliable. I have looked at the Octavia and given it has the 1.9 PD 105 in it it has to be considered. It's daft that when we are talking about the likes of VW that they can have such common and expensive problems even if looked after right.
Funny you should say that about the Kia and Hyundai I asked Honest John and he suggested the same. Might have to adjust my thinking, he says that the 1.6 diesels didn't have DPF until 2010 either so it looks like it could be the way forward. They look to have good running costs as well. I'll get there in the end!
Thanks again
|
Ideally I am looking for an 03 A 4 Avant with an AWX engine 1.9 TDi to replace the A4 saloon I have with the same engine, which I am so impressed with.
Can you tell me which year to go for which will guarantee this brilliant engine and where do I look on the car to check I have the right engine.
Also is it safe to go for an auto version?
|
A 1.9PD A4 of that year will probably have the AVF engine - which is fine. It's very similar to the AWX but has the fuelling set for a slightly higher peak torque - on paper. When actually comparing them, there's much more difference between individual engine samples. My AWX out-performs many AVFs that I have driven - these engines vary quite a bit. A good one of either type will go like a steam train.
The way to tell them apart is to look at the auxiliary drive. The AWX has a separate drive belt for the aircon compressor which is mounted on the right hand side of the engine (looking towards the front). The AVF has one drive belt for the lot and the compressor is on the left.
The engine type designations are printed on the cambelt cover, on the build sticker in the spare wheel well, and on the front inside cover of the service book. The engine output in kW is also given - divide by 0.746 to get BHP (or 0.735 to get PS).
Both of these engines are useful and reliable - assuming correct maintenance (absolutely vital, as they are now old).
Beware any auto transmission - the torque of the PD wrecks them and their general reliability does not meet my standards. A failing auto usually begins to hesitate to engage reverse as the clutch drum breaks up. Expense quickly follows.
The 5 speed manual gearbox is better in all respects than the 6 speed and if you get one of the later ones (eg. GGB) the top gear ratio is very nearly as tall as the 6 speed unit (a difference of 120 engine rpm at 70 mph - not worth bothering about). The 6 speed units can suffer pinion bearing failure due to incorrect bearing preload and also have a linkage design which can make them sloppy when they age.
One advantage of the 6 speed transmission is that it is fitted with a larger clutch - not a deal breaker unless you are heavy on clutches or tow. As transmissions cost more than clutches, the 5 speed unit is generally a better choice. If test driving a 6, check for a road-speed dependent whine on and off load.
Good hunting. By far your biggest problem will be finding a car which has had good maintenance and annual oil changes of the correct type throughout its life. A main dealer service record is no guarantee of this - a good independent, in my experience, will have done a better job.
659.
|
Many thanks 659.
Your knowledge is profound. Are you able to tell us about your background? And are you in business now?
|
Many thanks 659.
Your knowledge is profound.
Thank you - that was a most interesting read. We have a Passat with the AWX 1.9 TDi PD130 engine and it has been both reliable and economical.
However I cannot say the same for the electronics and I am therefore looking around for a replacement. My inclination would be for an Skoda Octavia but I am now very skeptical about the later engines !
Your comments on the experienced (and now probably retired) engine designers were pertinent. It is hard to imagine that after designing and proving a good design some bright spark says "lets change all of this - I am sure it will be better"
I suppose the continual pressure to make it cheaper over rides everything else ?
And of course the 'make it cleaner and leaner' imperative.
|
Hi Steveieb, I know it's been 7 months since, but did you find a A4 PD130? I ask because iv'e been lookin for months for something similar as reccomended by 659, I finally bought one 2 weeks ago, a 53reg Passat AWX/130/pd, one owner from new, 51k warranted miles only, FSH, and it drives and pulls really well.
I have wasted no time at all in doing jobs on it as reccomended by 659 and craig pd/130,
1: front upper suspension pinch bolts
2:track rod end pinch bolts
3:Plenum chamber checked, rubber drains were removed, carpets dry.
4: Pollen filter upper foam seal siliconed.
I hope you found what you were looking for.
Cheers.
|
|