How to find a misfire cylinder | Volkswagen Audi | VCDS
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- Опубліковано 14 жов 2024
- How to diagnose a misfire without fault codes using VCDS Measuring Blocks.
without check engine light
Zündspule oder Zündkerze quertauschen, prüfen ob der Fehler mitwandert.
P0302 Verbrennungsaussetzer Zylinder 2,
Zündaussetzer auf Zylinder 2
Пропуски воспламенения/зажигания, пропуски зажигания.
Volkswagen Polo 9N 1.2/1.4 Benzin
Audi, Vw, Seat, Skoda
#VCDS#VAG#tsi
Audi is king the best software have vcds
👍
Did you drive to operating temperature first, then turned off the engine? After that connected VCDS and started the ignition and only let it be on idle?
Is it also possible to measure with cold engine? Would it change from "Disabled" to "enabled"?
I measured it immediately after starting, the engine was around 20 degrees Celsius warm from the start.
When the lambda sensor starts working, the measurement jumps from disable to enable.
Thanks
You're welcome
If this problem occurs (on cylinder 4 - 1.4 TSI engine) even after replacing sparkplugs and coils, what else might be the cause? Thanks in advance
If it's always the same cylinder, then it could be the injector or there's a lack of compression. Occurs when the exhaust valves do not close properly
@@diagvids thank you very much. Will try to clean the valves and eventually to make a compression test
What do the numbers indicating the cylinder with ignition failure mean? If these numbers are 1 or 2, can we still think that there is a misfire in the cylinder? What should these numbers be? Would these numbers be different on a cold engine and a warm engine? I also made the same measurements. The number 1 appears for a short time on cylinder number 4, then it becomes 0 again.
The numbers mean there was a misfire. ideally there must always be a 0, both in the cold and in the warm state. try swapping the spark plug and ignition coil across and see if the error moves.
I have vcds 22.10 I believe and I don't see the misfire options. This is with a 2.0 tdi touran 2005. I had one error saying cyl4 misfire p0304. The car runs like crap, white smoke at startup and stuttering sometimes while driving. Any ideas?
the misfire options are not displayed on your model. What you can do is swap the pump nozzle cylinder 4 with cylinder 1 across. if the error moves with you then you have found the error.
@@diagvids Thanks for the reply. I will do what you said.
@@diagvids Tomorrow I finally have time to work on the car. I was checking videos on what to try. Do you mean change the injector from 4 to 1?
@@marcusj8623 yes you can do it
Hello, my vehicle is Jetta mk6 1.2 tsi. I wonder if I will test for misfire using the method you showed. My vehicle is 4 cylinder. I don't know what to choose in the program. I would be glad if you help. Thanks.
Hello, yes the principle is always the same no matter how many cylinders you have. Simply follow the steps as in the video.
Do you just change the coil pack to fix the problem?
In this case it was the ignition coil, but there can be various causes. The best thing to do is to swap the parts such as the ignition coil, spark plug or injection valve and observe the measured value block after the swap.
Here are two more videos on this topic:
ua-cam.com/video/VC0ToJzRQYQ/v-deo.html
ua-cam.com/video/UvOIzMv11hU/v-deo.html
Amigo buenas noches tengo una falla asi ya cambie las bobinas completas nuevas y bujias denso iridium es un bora 2.5 5 cylindros pero me sigue apareciendo una falla en el cilindro 1 ya movi las bobinas de lugar y me sigue marcando el mismo cylindro 1 crees que sean las valvulas y tsmbien avienta explosiones por el escape cuando revolución a 1000rpms
Hola, definitivamente mide la compresión primero.
Same on 4 cylinder?
Thank you for your question, yes it is the Same.
What is problem, if my car light blinking indicator engine. When i start car, cold start. Scan show misfire cylinder 1.. every cold start... What is problem?
What vehicle and engine do you have?
@@diagvids vw jetta 1.4 tsi twin charge. Engine ea111
First you can check the basics.
replace the ignition coil and spark plug with another cylinder and check whether the error moves with it.
Also for your information: these engines have problems with carbon build-up on the intake valves, which can also cause misfires.
@@diagvids ohh yea... Alright. I try to change coil cylinder 1 to cylinder 2. But plug is new. I think mileage not more than 2000km after change plug.
@@diagvids if carbon built at intake. What we can do?
Like the sounds...
thank you
Question, I got a 1.4l tsi with no dtc error codes for misfires, and "Misfires per 1000 revolutions" is 0 for all cylinders, just like "Total misfires" is also 0, yet "Numb.of misfir.: cylinder x"is an insanely high number for all 4 cylinders, and still increasing after changing both spark plugs, coils, and gasfilter, do you have any idea maybe why those numbers are increasing, when all the other ones remain 0?
this is very unusual. There are cases where all cylinders will increasing the misfire counter but if the problem is only at idle then the carbon could be on the valves. Is a very common problem on TSI.
@@diagvids Yea I was wondering about that, I mean, it's not the spark plugs, not the coil pack, not the fuel filter, at which point the only thing I can think of is all 4 injectors, or carbon on the intake valves.. But the thing is, when I say "insanely high number", I mean all 4 cylinders have like over 6000 misfires each, yet the car is not throwing any error code, really weird..
Do you think it could be carbon buildup? The car has only run about 80.000km
@@-a6833 Yes, that can be, there are cases where it occurs at 60,000 km.
@@diagvids Hm in that case, time to figure out how to pull the intake manifold off and have a look I suppose, in hindsight it might be a good idea to check either way, the car has always been "vw dealership maintained", and I only recently at 80k km found out that they have never changed the fuel filter, not once.. So I imagine that might have aggravated things also
@@-a6833 You can also look inside with an endoscope camera, without removing the intake manifold.
the engine shocks /stutters when the engine is cold, but no error code can be found, when the engine is warm the engine runs with fewer shocks/stutter. What do you think of that ?
The needle is going up and back when it happend
What vehicle and engine do you have?
@@diagvids hi
I have an a3 8p sportback with a cupra engine in BWJ with 367hp
@@AutosportMore A common problem is carbon build-up on the intake valves. As a result, they don't close properly and there is a loss of compression in the cylinder.
@@diagvids the engine has only 50k one the clock, even les than 50k
@@AutosportMore OK, that's rather unlikely, were you able to read out the measurement value block for misfire like in the video? This video may also be helpful: ua-cam.com/video/UvOIzMv11hU/v-deo.html
If all 4 cylinders missfiring only on iddle ???the car is tfsi 2.0 ??? Maybe carbon????
the carbon could be on the valves. Is a very common problem on TSI.
I can find misfire counter on my vcds.. (a4 b8 1.8 tfsi). I can find anything about cylinders. Please help.
please try the following: go to Advanced Measuring Values and search for Misfires per 1000 revolutions of cylinder 1 - 4 ( LOC. 105 - 109)
Say desable... Why?..
I try everything but it's not showing no cylinders, only one loc, and says it's disable
maybe you need to update VCDS
I bought today, it's the last version (original)
I have got an audi 2009 2.0 tdi avant. The car is misfiring when idle. I got told that try changing the fuel filter as it can get blocked and cause a misfire. Is that correct? There's no eml light on dashboard plus one of the mechanic put his snap on tool and couldn't find any codes. What could it be?
When was the diesel filter replaced? The filter has a change interval of 60 tkm.
Is this a common rail engine, what engine code does it have?
@@diagvidstbh I don't know when it was change but the service is due next month. And you mean the fault code? There is no fault code as engine light not on.
@@sufyanumar4663If the filter were clogged, it would also be noticeable under load. There could be problems with rail pressure. Compare the values as shown in this video: ua-cam.com/video/fypAxBuNsO8/v-deo.html
Hello, i am logging misfire counter and sometimes i can misfires across all 4 cylinders. Most of it being on the cylinder number 3. And only when car gets hot. What could be the problem ? 😊
Hello, do you have a TSI Engine?
I have the 1.2 TSI engine and i have the same problem as described above... Did you find any solution? I also noticed that count of missfires on each cylinder is very high(about 15000)and it still increase. I dont see any strange symptons like engine jerking but i noticed that my car has started to consume more fuel (about +1L/100km) @@diagvids
@@ryszardlowigus6546 A common problem is carbon build-up on the intake valves. As a result, they don't close properly and there is a loss of compression in the cylinder.
I have auq 20vt 129000 km change spark plugs and coils the car has missfire at alla cylinders and cuts at steady speed or at idle at full throttle the car go perfect.
Please check the timing marks.
@@diagvids it's correct
@@ΓρηγόρηςΚωνσταντινίδης-μ9ρ Please check the measured values of MAF or unplug it for checking.
@@diagvids it's new Bosch
@@diagvids without plug same.problem
How did u change measuring fron disabled to enabled?
when the engine has reached operating temperature the ecu cange to enable.
I once had the problem where the crankshaft sensor was faulty and it didn't switch to enable (1.4 16V Polo 9N)