MK5 Golf GTI
All Things Mk5 => Mk5 General Area => Topic started by: dajonic on September 15, 2010, 10:32:43 am
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My cars at VW right now. In to test the boost problems I had on the rolling road. I was led to believe that to test for this the system is pressurised and then 'smoke' is introduced to highlight any leaks from where it escapes. When I booked in the car I talked about this procedure and they seemed to acknowledge this. However taking it in this morning and speaking to one of the techicians quote ' I've been here 18 years and I've never seen or done this'.
So does anyone on here have experience of having this done or any VW people on here can confirm this is a load of rubbish.
In the mean time they're going for test drives and logging any data.
Thanks.
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Jim @ JKM talked about doing this on my old Octavia when I had problems. Not sure if he did or not though.
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sounds reasonable, it depends what 'issues' you had on the RR tbh.
a failed DV wouldnt show anything on the 'smoke' test as it would just recirc.
normally the N75 curve throughout the rev range taken through logging would indicate if you have a leak or not.
I guess smoke would help find it if it wasnt the DV
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Dave @ ADS did a smoke test on mine,
just the usual VW tech muppets that dont have a clue! :rolleye:
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I was told about this when trying to find issues with the Blue Bullet.
I will have a look when i get back from work and see if i still have the E-mail but im pretty sure i was advised to take it to a specialist as VAG Delears don't do it/have a clue about it.
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Thanks for the replies guys. I need to talk to JKM because I'm booked in for the RR day in October and don't want the same problems with the DSG I had the last time.
As for the DV I had that replaced just the other week for the new piston type valve. I'm thinking it might be the waste gate letting go too early. I 'll post up the graphs from the rolling road to see if it points to anything.
Does anyone know of a garage that does the smoke test around the Bristol area?
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fxx321%2Fdajonic%2F1.jpg&hash=28cde5438a1be64b08e078eb600e67b7371683be)
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fxx321%2Fdajonic%2F2.jpg&hash=2d5d65f9dc03907dec16899c3c74f12fec404d5d)
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Does anyone have experience with the BSH PCV fix? I've just read this
"The prone to failure factory PCV system has long plagued this engine with poor mpg, rough idle, boost loss, and the dreaded oil spewing from the oil cap"
Giving the car a blast up and down on the dyno could maybe cause this to blow? I don't have any of the other symptoms except maybe a few less mpg but I thought that was more to do with being tuned slightly.
I've just rang VW and told them to check the N75 readings and Boost valve on the logs after searching the forum. Is this an easy fix?
Thanks again
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Yup, BSH PCV fix is an easy DIY fix.
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Smoke test:
http://m.youtube.com/index?desktop_uri=%2F&gl=GB#/watch?xl=xl_blazer&v=FfiQ7qWiG-M
Used to do 3-4 a week when i worked at a main dealers.
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Smoke test:
http://m.youtube.com/index?desktop_uri=%2F&gl=GB#/watch?xl=xl_blazer&v=FfiQ7qWiG-M
Used to do 3-4 a week when i worked at a main dealers.
Cheers for that Dave, though the link takes me to something else.
And Bacillus, sorry mate I meant the boost valve on the turbo body. Is that an easy fix.
Thans again for everyones help. :happy2:
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Hi Dave,
As I replied in my PM, you'll pick up all sorts of info from my thread about my turbo leak and how JKM solved it.
Basically, whoever solves it, it's a process of elimination and greatly helped by being able to check logs etc. The most cost economical way is to start testing the easy-to-get-at minor things and go on from there.
I'm not saying no-one else can solve such a problem but I have absolutely no hesitation whatsoever in very highly recommending JKM and I know others here would agree.
If you've got DSG, stick it in D the whole time and keep the revs well under 4,000 until you know more.
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I got to say I'm heading down that route. I'm not impressed with VW so far. Ranging from confusion overthe smoke test, to saying it'll be done in the day, and now no contact, no car, and no idea if its even been looked at. Popping round first thing tomorrow morning and if they've not looked at it I'm taking it away.
Your link was spot on and after 110k miles probably looking at a crack developing in the casing. I'd already messaged JKM about the rolling road day so will probably be heading down there on my next day off for a thorough investigation.
Thanks again :happy2:
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^^^^
Just like all garages and businesses, VW dealers vary in their abilities and their attitudes. They're all meant to achieve the same high standards, but. It's horses for courses and I'm very lucky in that my VW dealer is always the first to say I'd be better off going to one of the specialists I know. I also know that my VW dealer can do some things which other specialists/garages can't do.
Unless you think your VW dealer is a complete numpty and arsehole, don't burn your bridges by falling out with them. You get more with honey than with vinegar.
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Just got off the phone from the dealer, after yesterdays misunderstandings and this is what I was told today.
"Because the cars been mapped we can't plug in the diagnostics and run our software, as we don't want to change anything that I might been have done to the car. Can you take it to a specialist to look at"
Ok so A: I'm no expert on vcds/vag.com but I would imagine logging etc you can do no matter whats been done to the car :rolleye:
and B: Can you take it to an specialist...well I thought I was :fighting:
Back to square one :sad1:
At least I get to JKM twice now :happy2:
Robin you're right burning bridges is never a good idea but sometimes you need to have the bridge there in the first place.
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@ Dave:
Then JKM will be your best course of action - They're experts in such problems.
I can understand your VW dealer's stance - They're often not trained in sorting out such things on remapped/modified cars and their job time would cost you a lot more. It's the same principle as any manufacturer not being able to honour its warranty if you change what they supplied you. I can understand that.
In a way, your VW dealer is doing you a favour by suggesting you try elsewhere first. Horses For Courses, again.
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It's not the fact they didn't do the work, more the yes we can, no we can't, yes we can and finally again no we can't. When they were presented with the facts ie modded car ( they even asked me to go home(just round the corner) and get the maps from PDT) to be told after picking the car up the next morning that actually no we couldn't touch the car due to the facr it was mapped??
Crazy but what the hey. It's over and done, finished. I'll still buy bits from them, and continue to get it serviced by my own garage. I'll speak to JKM in the mean time and sort out a date.
thanks for evryones comments. :happy2:
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Actually from what I have read here I think Mr PDT should have left your car stock so it could be diagnosed by a main dealer rather than map you and then say you have a boost leak.
Or even book you back in to resolve the problem. :confused:
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Actually from what I have read here I think Mr PDT should have left your car stock so it could be diagnosed by a main dealer rather than map you and then say you have a boost leak.
Or even book you back in to resolve the problem. :confused:
....Good point. Don't most tuners thoroughly check the car as standard before any remapping? I know JKM do and, if relevant, they wouldn't remap until a problem is firstly resolved.
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In Daves defence the car was fine during the first set of runs and the car was logged if I remember correctly and nothing flagged up before anything commenced. The boost problem only reared its head after a numerous amount of runs with the new map in place. Time was an issue for further investigation as I had to head back to Bristol from Tyne and Wear for work the next night. Dave did say idealy he'd like to do exactly that. As for taking the map back off well thats power of hind sight stuff maybe.
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Its a shame you are not closer really as then this would have been a lot easier.
As for vw not wanting to work on it, thats their decision at the end of the day but their excuse is a bit lame as the map wouldnt affect any logging or diagnostic work in the slightest.
It would have been an option to leave with the car on a standard map but the customer had travelled a long way and had a long drive home, and the problem wasnt evident until late in the day so the map itself is fine, try finding a specialist and i will gladly send both the original and tuned file in an open format to them incase they need to swich between maps.
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Or buy a VCDs cable and i will teach you how to datalog and how to look at the data to find the problem, its quite easy with a bit of guidance. :happy2:
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According to this thread http://www.mk5golfgti.co.uk/forum/index.php/topic,19417.0.html Mr Dajonic has a VCDS cable.
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Or buy a VCDs cable and i will teach you how to datalog and how to look at the data to find the problem, its quite easy with a bit of guidance. :happy2:
Cool. I'll get the VCDS sorted and go from there. :happy2:
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In Daves defence................
....I'm just posting to clarify that I wasn't throwing doubts about PDT - By all reported accounts they appear to be excellent in their approach and attitude. :happy2:
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Thanks robin :happy2:
(your commission cheque is in the post)
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2.0 tfsi P0299 fault code
How major is the negative boost deviation? What is the ecu asking for a what is the turbo giving at what N75 duty and rpm?
A basic logging session should point you in the right direction.
Post from briskoda:
http://briskoda.net/forums/topic/161290-tfsi-remap-comparisons-maintainance/
The Shark dyno plot is from my vehicle and it recentlly made 236bhp on R Techs rollers with 264lbs of torque. The above plot was done at Geoff Bloor Garages in Nottingham. When I had my car in at R Tech it was to have a pressure test and dyno run because I was having a P0299 fault code re-appear. My car had no leaks and appeared to be running fine apart from the fault code coming back.
Yesterday I did some logging with Ben (Shark90) and the turbo was missing the required limit by 500millibars. Which is quite a big gap between requested and actual boost pressure. But I have fixed it today by squirting some sil spray into the N75 valve and that has sorted the problem. No more fault code......yet lol I would presume the figures to be a little higher than 236bhp, as it had a sticky N75 valve when it was done. But I can confirm that the map is smooth and pulls effortlessly.
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Hmmm, interesting. ^^^ On the drive home there were no problems at all, just the code that showed up on the rolling road. Thanks for the Link Nick