Audi A4 2.0 TDI DPF (B7) BRD – Uneven idle & smoking on idle

[A11an]

Hi

I have an Audi with idle smoking issues, the story so far

Jan 12 – Recalled to Audi for injectors, 3 months later it starts to get uneven and slight smoking on idle.

When the engine starts getting lumpy after starting the readings are as below, if I give it a good rev it clears for 30 seconds the cyl 4 comes right down to the same as the other cylinders but then goes back up with lumpy running. See readings below when lumpy.

Group 13 Idle stabilization (Injector Quantity Deviation)
-0.19 mg/str cyl 1
-1.46 mg/str cyl 2
-0.62 mg/str cyl 3
2.28 mg/str cyl 4

I swapped No.1 & No.4 injectors over, and the engine ran fine on idle with no smoke with the idle stabilization readings

Group 13 Idle stabilization (Injector Quantity Deviation)
-0.09 mg/str cyl 1
-0.28 mg/str cyl 2
-0.68 mg/str cyl 3
-0.29 mg/str cyl 4

I took it out for a hours drive, parked it up for 2 hours and when started it was uneven and smoking again on tick over and the reading had swapped with the injector, see below,

Group 13 Idle stabilization (Injector Quantity Deviation)
1.83 mg/str cyl 1
-0.54 mg/str cyl 2
-0.59 mg/str cyl 3
-0.69 mg/str cyl 4

So from here I fitted a new injector to No.1, started it up and it smokes like it’s never smoked before, thinking the wiring loom may have a fault I also fitted a new one too.
It ‘s almost like the ECU wakes up in a different mood every time it’s started!

Here's a snapshot today.

Address 01: Engine (03G 906 018 AQ)

08:25:39
875 /min Engine Speed (G28)
274.6 mg/str Exhaust Gas Recirculat. (actual)
57.0°C Fuel Temperature (G81)
27.0°C Intake Air Temperature (G72)
280.9 mg/str Mass Air Flow (actual)
1011.4 mbar Atmospheric Pressure
-0.34 mg/str Injection Quantity Deviation Cyl. 1
-0.12 mg/str Injection Quantity Deviation Cyl. 2
0.47 mg/str Injection Quantity Deviation Cyl. 3
-0.01 mg/str Injection Quantity Deviation Cyl. 4
76.0°C Oil Temperature
1013.9 mbar Boost Pressure (actual)

Is the injector coded or need adapting? Any help on this would be greatly appreciated, please go easy on me if I missing something.

Thanks

Allan

[A11an]

With new injector fitted


http://youtu.be/jpu5-_Cx6FM

[eddiek]

Mine had a similar problem last year, would smoke like that when Idling. I changed Fuel filter and injector wiring loom, Audi changed 3 injectors FOC and all seems to be ok now. When mine was fully warmed up it would idle fine and no smoke. Sure I felt it getting a bit lumpy again with the cold weather coming back though but have not noticed any smoke yet.

[A11an]

Sorry to put to many posts, here is the car with the old injector put back in, still smoking but no where near as bad, stinks and burns your eyes though!


http://www.youtube.com/watch?v=jVGmxJuLDys&feature=share&list=ULjVGmxJuLD ys

[Platinum Kitty]

HI A11an, Im really interested in this post as mine (A4 2.0TDi 140 06 plate) looks exactly like your first video on start up! I am just about at my wits end with it... i dont know if this just happend to be coincidence or not but ive noticed that water coolant level has dropped considerably prior to the smoking, fire it up and bingo beautiful white steamy smoke, just spent upwards of £1500 having the engine stripped down, block lifted and skimmed and pressure tested, saw some small markings from cyclinder 3, changed everything rebuilt. and bingo 250 miles later exactly the same as it was before....

Have you managed to get anywhere with this.... any information would be greatly appreciated...

[snapdragon]

Yes you need to code the injector in. The alphanumeric code is printed on the injector and individual for each one, it sepcifies the characteristics of each injector to the ECU as tested and calibrated in the factory.

18505

e.g. CKAUHWC

[GatesA4]

Im having the exact same issues with mine (same engine) it's had the injectors replaced under warranty before I purchased it in feb this this year (injectors done last August). I've been on the phone to audi uk and they've instructed me to book it back into audi in Lincoln and they will check the injectors again as from my symptoms it sounds like injector failure. It's in on thurs so ill keep you posted. It's got that smokey that we have to turn the car off at traffic lights, someone actually got out of their car the other day and told my mrs that there was a major problem with the car as their car was surrounded by smoke.

[Imizz]

Hi, Any update on this?

I've got a Passat Sport 170 BMR Engine, it has the exact same symptoms, smokes like crazy when idling stationary at lights etc..

VW changed all 4 injectors, drives fine, apart from the odd misfire now and then..

[kernowfish]

Any more news as mine doing the same but Audi not intrested even thou they replaced the injectors under the lastest recall

[patrickhorton]

I had this for a year or so when the coolant temp is between 50 and 70 on the gauge on the dash, i.e. during warm-up. It can be really embarrasing in traffic.

One day the car went in for a cambelt replacement and it has been perfect ever since. Don,t know why but it's good for me. The belt was done at the main dealer so maybe they did some tweaking but I suspect it is some kind of cam angle error that was naturally corrected when the belt was done.
The injectors were replaced sometime later and so they are not in the equation.
Good luck with yours.
Patrick

[niall campbell]

HI A11an, Im really interested in this post as mine (A4 2.0TDi 140 06 plate) looks exactly like your first video on start up! I am just about at my wits end with it... i dont know if this just happend to be coincidence or not but ive noticed that water coolant level has dropped considerably prior to the smoking, fire it up and bingo beautiful white steamy smoke, just spent upwards of £1500 having the engine stripped down, block lifted and skimmed and pressure tested, saw some small markings from cyclinder 3, changed everything rebuilt. and bingo 250 miles later exactly the same as it was before....

Have you managed to get anywhere with this.... any information would be greatly appreciated... Is your cylinder sleeves gone ? letting water in

[niall campbell]

I had this for a year or so when the coolant temp is between 50 and 70 on the gauge on the dash, i.e. during warm-up. It can be really embarrasing in traffic.

One day the car went in for a cambelt replacement and it has been perfect ever since. Don,t know why but it's good for me. The belt was done at the main dealer so maybe they did some tweaking but I suspect it is some kind of cam angle error that was naturally corrected when the belt was done.
The injectors were replaced sometime later and so they are not in the equation.
Good luck with yours.
Patrick timing marks must have been out somewhere, or tension gone in belt

[sabre135]

It looks like im having the same problems with my 2007 A4 2.0 TDI SE Avant 170!!!....im at my wits end!....the car is with Audi as we speak,they say they have replaced the EGR valve & part of the vacuum system or something like that & also the MAF sensor was changed out by Lexus garage,the week before but it still smokes & runs lump on tick over!...Im going to mention to Audi about the possible injectors requiring coding in & just out of interest,mine had the cambelt done 2 services ago by an independant dealer,or has the box just been ticked in the service book...it is in different coloured pen!....why would the cam belt alignment cause issues guys?....any help would be appreciated here!...thanks.
Paul

[sabre135]

I now have the paperwork from Independent garage,who sent the car to Teesside Audi....basically they have changed the EGR valve & put in a new intake manifold vacuum unit....they then ran up the engine road tested & checked it & stated it was ok.
I went to pick up the car from the garage who sent it to Audi & basically it is just the same!!...very rich smell & quite smoky like the first video thats in this thread.....surely you would think Audi technicians would have noticed this on tick over!.....very lumpy at just under 1000rpm & smoking like it is!!!...like i said im totally at my wits end now,Independent garage have dropped car back off with Teesside Audi & im going in first thing in the morning to basically start it up in front of Audi technicians & see what they say about it & basically ask ''can they rectify it or not'' & hopefully get it sorted!....i will be mentioning re coding the injectors & checking the cam belt alignment like it suggests in this thread,but if anyone has any more suggestions i can ask them to check,then please help.
Cheers & Regards Paul W.

[Ruis]

Hello! I'm from Russia. I have the same problems. Rich smell, white smoke. Dealer pomenee 4 injector on the action and the problems began. All this error in process:
1) Turn engine On - firs 3-5 minutes no problems
2) After 3-5 minutes begin the smoke and the engine begin to weak, uneven shake. (And its never stop when the car is stand)
3) I'm starting to go, when you press the acceleration pedal failure, the smoke is stronger, but then it all goes away. Until the next time the engine is cold
Our dealers are powerless. I've been there 3 times. I changed the clutch, fuel pump - of course did not help.

Has anyone solved the problem? It is injectors or a cambelt?

Passat B6, BMR 2.0 + DPF.

[Ruis]

I now have the paperwork from Independent garage,who sent the car to Teesside Audi....basically they have changed the EGR valve & put in a new intake manifold vacuum unit....they then ran up the engine road tested & checked it & stated it was ok.
I went to pick up the car from the garage who sent it to Audi & basically it is just the same!!...very rich smell & quite smoky like the first video thats in this thread.....surely you would think Audi technicians would have noticed this on tick over!.....very lumpy at just under 1000rpm & smoking like it is!!!...like i said im totally at my wits end now,Independent garage have dropped car back off with Teesside Audi & im going in first thing in the morning to basically start it up in front of Audi technicians & see what they say about it & basically ask ''can they rectify it or not'' & hopefully get it sorted!....i will be mentioning re coding the injectors & checking the cam belt alignment like it suggests in this thread,but if anyone has any more suggestions i can ask them to check,then please help.
Cheers & Regards Paul W.

Did you solve the problem with the motor? What the dealer say, what was the reason?

[shub7]

@ A11an (http://www.vwaudiforum.co.uk/forum/member.php?189937-A11an)


HI Mate

i have same exact problem with my Audi A4 2.0tdi Quattro 2007 - how did you manage to fix this issue?

pls do let me know

regards
Shu

[hollow]

@ A11an (http://www.vwaudiforum.co.uk/forum/member.php?189937-A11an)


HI Mate

i have same exact problem with my Audi A4 2.0tdi Quattro 2007 - how did you manage to fix this issue?

pls do let me know

regards
Shu

either a bad injector or injector seals usually , secondly could be tandem pump ,check the fuel filter see if there is oil in the diesel .

[shub7]

Hi

Done Fuel Filter change today

still same issue

Shu

[Malpa]

Hi Guys,

New to this Forum, due to the failure of my car and my endless search into establishing what my problem is caused by. My 2006 170BHP S-Line, done 109K miles, recent Full Service by Audi to the tune of £700 is now dead. This also included a coolant pressure check as the level was very low.

I'd noticed the smoking as the car sat idle and also the judder a week prior to getting the warning of "Oil Pressure Low" on the dash. Internet searches for this error return problems with the Oil Pump, Balance Shaft, Injectors and Turbo (Ouch) The car lost all power. I limped to an indy garage who informed me that the Turbo was gone and potentially the oil pump also. A heck of a large, costly repair job. Coolant level again very low, yet the pressure check ruled out any leaks.

Has anybody else had a similar connection with Smoking and the Oil Pressure Low?

[shub7]

ok these horror stories getting me reallyy worried now.

i need some help and guidance please

i have audi a4 quattro BRD 2.0 TDI 2007

i need to avoid this problem -

which parts i need to buy to avoid this issue occurring

what will be total cost im looking at?

please do advise..

many thanks in advance

Shu

[Malpa]

It's quite possible that I damaged the turbo by limping to the garage, (3 miles). Suspicions are that the Oil Pump has failed which in turn has taken out the Turbo.
Official genuine replacement part price quoted from Audi UK is £1616. Oil pump is quoted at £170, but from other threads/posts the labour is the expensive element to this repair.

It's imperative that should the "Oil Pressure Low" warning message appear on your display you stop the engine, or else you could be in more expensive repair territory.

I'm not suggesting the Smoking on idle is generally linked to a failing Oil Pump, however it may just be in my case.

If anyone has had similar symptoms with a B7 BRD 170BHP 2.0 TDi engine, then please PM me what the potential causes/fixes are.

Cheers,
Rob

[hollow]

oil pump failure , lucky you didn't seize the engine as well . the parts can be sourced else where at a cost of £250 exchange for the oil pump drive , usually an engine out procedure ,but can be done by loosening the sub frame and carefully sliding sump out to gain access .If you need this doing my brother owns an vw audi indy garage in south Yorkshire . smoking is caused by the turbo been damaged .

[Malpa]

oil pump failure , lucky you didn't seize the engine as well . the parts can be sourced else where at a cost of £250 exchange for the oil pump drive , usually an engine out procedure ,but can be done by loosening the sub frame and carefully sliding sump out to gain access .If you need this doing my brother owns an vw audi indy garage in south Yorkshire . smoking is caused by the turbo been damaged .

Hi Hollow,

Where in S.Yorks is your Bro's garage and is he familiar with this procedure? Would he be able to pinpoint the faults, etc and what kind of costs are we talking?

[hollow]

garage is near to Rotherham , they have done numerous VAG cars with this fault as the same engine/oil pump is fitted to many of the VAG groups range . I have a 58 plate common rail a4 and the fault is still in that same engine ,as a precation I had the oil pump drive swapped within the first week of receiving the car . pointless now as I have to sell it due to illness .As for cost I couldn't be sure it depends on what work needs doing besides the oil pump e.g maybe you would want the cam belt changing while the engine is out , you need the turbo replacing anyway unless you already have a new one .If you want the garage number I can pm it to you . just mention my name should give you some discount

[Malpa]

Hollow,

Shame about yours. Seems to me that Audi aren't learning from the past models and persisting with sub-standard designs. Can you PM the telephone number. Also who I should ask for etc. please?

[hollow]

il pm the phone number to you ask for paul or paul . joint partners in the garage both ex vw one master tech , other paul my brother was head of tech (engine control units electrical etc. ). il let my brother know PJ , that you may call

[hollow]

here take a look at this post ,this was mine when I had the oil pump rebuilt + new clutch and dual mass + cam belt + water pump . all done at brothers garage in less than a day and a half . http://www.audi-sport.net/vb/audi-s4-a4-a4-cab-b8-chassis/185774-only-went-oil-change.html

[lgd]

Hello! I'm from Russia. I have the same problems. Rich smell, white smoke. Dealer pomenee 4 injector on the action and the problems began. All this error in process:
1) Turn engine On - firs 3-5 minutes no problems
2) After 3-5 minutes begin the smoke and the engine begin to weak, uneven shake. (And its never stop when the car is stand)
3) I'm starting to go, when you press the acceleration pedal failure, the smoke is stronger, but then it all goes away. Until the next time the engine is cold
Our dealers are powerless. I've been there 3 times. I changed the clutch, fuel pump - of course did not help.

Has anyone solved the problem? It is injectors or a cambelt?

Passat B6, BMR 2.0 + DPF.

I own an audi A3 2.0 TDI 170 from 2007 and have exactly the same issues as above: occasional lumpy/shaky idle with white smoke and rich burning smell.
All 3 + 1 injectors replaced. Injector seals replaced afterwards, no change.

Did anyone solved this? Is this cam timming related?
Thanks.

[creative335]

Guys i managed to sort my out exactly same prb smokes on idle changed my engine oil and filter and its all sorted in the past these retailers were giving me wrong engine oil i bought my engine oil from vw not audi its the quantum long life 50700 grade make sure you put exact 3.8 liters including filter change if you put more it will smoke my car is running like dream costs me all together £44 from vw for both and paid £20 to a guy to replace them so all sorted car is in peace.....if you guys need part numbers let me know mine is a4 b7 2.0 tdi 170bhp

[creative335]

Lol

[Ruis]

Hello! Yes, I solved my problem. in the end it turned out that I had two problems: 1) was incorrectly installed timing belt. 2) has failed one of the injectors. Which of these two problems was the reason no longer clear. but now everything is in order. Good luck!