The Misfire Struggle (1.6 FSI - BAD)

[PlasticMac]

Could you please indicate the spare part numbers of the parts you have repaired? I think I have a similar problem and would like to fix it.

Hi @Gorevolution
Have you scanned the car? It would be interesting to see if you have any errors that relate to the symptoms.
It helps other FSI'ers if an error code can be associated with a part that when replaced, cured the symptom, and cleared the code too.
Mac.

 

[Gorevolution]

Ciao @Gorevolution
Hai scansionato l'auto? Sarebbe interessante vedere se ci sono errori relativi ai sintomi.
Aiuta altri FSI se un codice di errore può essere associato a una parte che, una volta sostituita, ha risolto il sintomo e ha cancellato anche il codice.
Mac.

yes i have scanned at the moment i am waiting to fix the problem at the lower manifold but in the meantime i am getting anxious that the hp pump may have worn out

 

[Crgwal]

The problems I had with my car that I listed above were producing a vacuum leak error code. So this is what I would expect you to see.

 

[PlasticMac]

si ho scansionato al momento sto aspettando di sistemare il problema al collettore inferiore, ma nel frattempo mi viene l'ansia che la pompa hp possa essersi consumata

Ciao, per favore dammi un po' di tempo per tradurre i codici di errore poi ti risponderò. Hai la spia di gestione motore sul cruscotto?
Mac.
Hi, please give me a while to translate the error codes then I'll reply. Do you you have an engine management light on the dash?
Mac.

 

[Andrew]

Could you please indicate the spare part numbers of the parts you have repaired? I think I have a similar problem and would like to fix it.

Good Evening,

I think it unlikely you will receive a reply from Varg327 he last logged in October 2020. To answer your question the oil separator is item 19 in...

https://audi.7zap.com/en/rdw/audi+a2/a2/2002-248/1/103-103020/

Member MTL made a good video of the oil separator change okay it is a 1.4 petrol but basically the same.

Audi A2 by Mtl - getting it back on the road as a weekend car

Finally second oil dipstick retrofitted and I can get a consistent oil level reading.:cool: Parts needed: VW part nr. for dipstick: 030115611R VW part nr. for funnel for dipstick: 030115636A VW part nr. for rubber o-ring: 030115444 Topran part nr. for dipstick: 109 300 Topran part nr. for...

www.a2oc.net

Andy

 

[PlasticMac]

Ciao, per favore dammi un po' di tempo per tradurre i codici di errore poi ti risponderò. Hai la spia di gestione motore sul cruscotto?
Mac.
Hi, please give me a while to translate the error codes then I'll reply. Do you you have an engine management light on the dash?
Mac.

Hi @Gorevolution
The codes generally relate to the inlet manifold, I agree. The misfires may not be related, check the manufacturing date of the coil packs, if they are original, or not Audi/Bosch/NGK, it would be wise to replace them. I'd check the connections to the NOx sensor inside the car for corrosion.
Do you always use 98/99 octane E5 fuel? This is mandatory for the FSI.
Why do you suspect the high pressure fuel pump?
Mac.

Ciao @Gorevolution
I codici generalmente si riferiscono al collettore di aspirazione, sono d'accordo. Le mancate accensioni potrebbero non essere correlate, controlla la data di produzione dei pacchi bobina, se sono originali o non Audi/Bosch/NGK, sarebbe opportuno sostituirli. Controllerei i collegamenti al sensore di NOx all'interno dell'auto per la corrosione.

Usi sempre benzina E5 98/99 ottani? Questo è obbligatorio per la FSI.

Perché sospetti la pompa del carburante ad alta pressione?
Mac.

 

[Gorevolution]

Hi @Gorevolution
The codes generally relate to the inlet manifold, I agree. The misfires may not be related, check the manufacturing date of the coil packs, if they are original, or not Audi/Bosch/NGK, it would be wise to replace them. I'd check the connections to the NOx sensor inside the car for corrosion.
Do you always use 98/99 octane E5 fuel? This is mandatory for the FSI.
Why do you suspect the high pressure fuel pump?
Mac.

Ciao @Gorevolution
I codici generalmente si riferiscono al collettore di aspirazione, sono d'accordo. Le mancate accensioni potrebbero non essere correlate, controlla la data di produzione dei pacchi bobina, se sono originali o non Audi/Bosch/NGK, sarebbe opportuno sostituirli. Controllerei i collegamenti al sensore di NOx all'interno dell'auto per la corrosione.

Usi sempre benzina E5 98/99 ottani? Questo è obbligatorio per la FSI.

Perché sospetti la pompa del carburante ad alta pressione?
Mac.

Hi and thank you all for the replies. In the meantime, I checked that the engine light was indeed obscured. I have recently replaced the coil on cylinder 3, but the error in the fault memory has remained. the other three spools are original or in any case old. I haven't used 98 octane petrol yet, I've driven about 800km since I bought it and I didn't know of this need. I suspected the high pressure pump, because reading other topics I seemed to understand that it could be involved. Can you please confirm a doubt? cylinders are counted from left to right, facing the nose of the car, right?

 

[PlasticMac]

Cylinder 1 is on the left, when standing in front of the engine/car.
You must clear all faults, (DTCs), one by one. The fault codes remain until cleared, even if the fault is fixed.
Mac.

 

[PlasticMac]

Cylinder 1 is on the left, when standing in front of the engine/car.
You must clear all faults, (DTCs), one by one. The fault codes remain until cleared, even if the fault is fixed.
Mac.

Also, very important never use E10 fuel. We do not know what parts are incompatible with 10% alcohol, Audi have just said the FSI is not compatible.
Mac.

 

[Gorevolution]

Good evening, I noticed a few days ago that the first time I start in the morning the car doesn't start. while it turns on immediately with the second turn of the key. at the same time the performance is zeroed and tonight I had difficulty tackling a climb in second gear, which until a few days ago I was able to ride comfortably in third gear. and here comes the thought that the HP pump is faulty

yes i have scanned at the moment i am waiting to fix the problem at the lower manifold but in the meantime i am getting anxious that the hp pump may have worn out

 

[audifan]

Perhaps lack of super unleaded and / or use of E10 has already taken its toll.

 

[SportyGru]

Good evening, I noticed a few days ago that the first time I start in the morning the car doesn't start. while it turns on immediately with the second turn of the key. at the same time the performance is zeroed and tonight I had difficulty tackling a climb in second gear, which until a few days ago I was able to ride comfortably in third gear. and here comes the thought that the HP pump is faulty

Hi, have you got vagcom? Or VCDS?
This Ross-tech video shows the blocks for pressure

I’m wondering if either your in tank pump is playing up or a non return valve associated with it so it’s I had a Saab that had starting issues and it was because fuel drained back the the tank

 

[Gorevolution]

Hi, have you got vagcom? Or VCDS?
This Ross-tech video shows the blocks for pressure

I’m wondering if either your in tank pump is playing up or a non return valve associated with it so it’s I had a Saab that had starting issues and it was because fuel drained back the the tank

yes i have a VCDS. I watched the video and now I try to connect to the car to see what the fuel pressure reads.

 

[Gorevolution]

I did a quick scan and I couldn't get the car to reach the temperature of 88° C, because I had the pc running out of battery. with the engine running, the pressure reaches 59 bar, when switched off it reaches 90 bar. later I will try again, to reach 88°C

 

[Andrew]

Good Afternoon,

Is the third VCDS screen after a two minute shutdown as in the video?

Have I missed any posts about the coolant temperatures not getting up to normal? This suggests with the video' commentator's instruction that temperature need to be > 80 this needs to be fixed first.

If I have time tomorrow I will post the blocks my own believed heathy FSI displays, then you will have something to compare and it will document a reference for anyone in the future, good if @PlasticMac could de the same.

Andy

 

[Gorevolution]

Good Afternoon,

Is the third VCDS screen after a two minute shutdown as in the video?

Have I missed any posts about the coolant temperatures not getting up to normal? This suggests with the video' commentator's instruction that temperature need to be > 80 this needs to be fixed first.

If I have time tomorrow I will post the blocks my own believed heathy FSI displays, then you will have something to compare and it will document a reference for anyone in the future, good if @PlasticMac could de the same.

Andy

the third screen is right after i shut down, my english isn't great so i didn't realize it was necessary to wait this amount of time.
The car goes up to temperature correctly, so I think I'll do the test tomorrow as indicated in the video.
in the meantime I did some running tests, the thing that seems clear to me is that the petrol pressure rises as the revs rise, but when it reaches 99 bar it can't go any further. do you know what is the operating pressure that the HP pump should reach? Finally I did an error scan and found that a few friends had joined the party

 

[PlasticMac]

Good Afternoon,

Is the third VCDS screen after a two minute shutdown as in the video?

Have I missed any posts about the coolant temperatures not getting up to normal? This suggests with the video' commentator's instruction that temperature need to be > 80 this needs to be fixed first.

If I have time tomorrow I will post the blocks my own believed heathy FSI displays, then you will have something to compare and it will document a reference for anyone in the future, good if @PlasticMac could de the same.

Andy

Will do Andy.
Mac.

 

[SportyGru]

Will be interesting to compare readings

 

[Andrew]

@Gorevolution

Good Afternoon,

VCDS snapshots of Block 140 (& Block 001) for you to compare using my believed healthy FSI.

First, engine up to working temperature at idle.

Second, Block 140 (& Block 001) two minutes after shutdown as in the video and engine off.

Lastly I too failed to exceed 99.9 bar, it simply did not want to go any higher.

Hope this helps.

Andy

Edit. Tried to compare our two measuring block data but did not get very far as you have not yet shown that suggested in the video, as mine above.

 

[Gorevolution]

@Gorevolution

Good Afternoon,

VCDS snapshots of Block 140 (& Block 001) for you to compare using my believed healthy FSI.

First, engine up to working temperature at idle.

View attachment 103200

Second, Block 140 (& Block 001) two minutes after shutdown as in the video and engine off.

View attachment 103201

Lastly I too failed to exceed 99.9 bar, it simply did not want to go any higher.

Hope this helps.

Andy

Edit. Tried to compare our two measuring block data but did not get very far as you have not yet shown that suggested in the video, as mine above.

thank you very much for the contribution. unfortunately I have not yet managed to do the test as indicated in the video, I hope to succeed in the next few days. in the meantime I found an article that talks about the HP pump of FSI engines and reports 110 bar as an operating value. https://www.notiziariomotoristico.com/articoli/6553/novita-in-gamma-le-pompe-ad-alta-pressione-huco
I may have found the fuel non-return valve part number, could you please confirm? 058133517B