1.4 TSI Multiple Cylinder misfires despite replacing all 4 coil packs and spark plugs

[gumdrop]

A leaking head gasket could cause misfire, leaking between cylinders.

[Kizotina]

Has anyone had faulty injectors on this engine?

[automass]

On 03/01/2023 at 15:39, Huggy05 said:

Has your car been ok since ? I’m am currently having exactly same issue but don’t have anything conected

 

Yes. Never had a single issue since I took the OBD11 out of the port. try removing any electrical cable or devices out of the port. as an example mobile charger, dash cam etc.

Edited 6 January, 2023 by automass

[Kizotina]

Two days ago I have changed coil packs,and I got check engine light flashing today.No clue what to do next.

[Ootohere]

So why were they changed, as in was there an issue requiring them. Were the spark plugs changed or replaced.  Anything else done?  If the correct coils were fitted and correctly gapped plugs then check everything again. Wiring. Or have another cast an eye at your work. 

[Kizotina]

Spark plugs changed two months ago.My mechanic told me this is the way to go, spark plugs, then coil packs,if this is not the problem then I should check if injectors are clogged.

[theking021]

Hi guys, i have a VW Polo 6R GTi with the CAVE 1.4 TSI engine and i have a weird multi-cylinder misfire at low rpm only (if i hold it at around 1500-2000 rpm the rpm's would start going up and down and i'd get the flashing engine light). If i let it go, it idles just fine and the light would go away. Drives hard. No issues. Would anyone know what that can be? I've tried changing most of the sensors, coils, spark plugs, gaskets. 

The only thing i havent done is the crank angle sensor and injectors. 

[theking021]

On 17/01/2023 at 18:37, toot said:

So why were they changed, as in was there an issue requiring them. Were the spark plugs changed or replaced.  Anything else done?  If the correct coils were fitted and correctly gapped plugs then check everything again. Wiring. Or have another cast an eye at your work. 

 

Did you get it fixed?

[Vam]

Same issue, I have a Skoda rapid 2016 1.4tsi 92Kw. It works fine, but during idle engine light blinks and epc come on with a rough idle and start stop error always.  Mechanic couldn’t find a proper solution. Shows random cylinder misfires codes, tried changing spark plugs and swapping ignition coils but no luck.

 

any info regarding this would be appreciated. Thank you!

[automass]

19 minutes ago, Vam said:

Same issue, I have a Skoda rapid 2016 1.4tsi 92Kw. It works fine, but during idle engine light blinks and epc come on with a rough idle and start stop error always.  Mechanic couldn’t find a proper solution. Shows random cylinder misfires codes, tried changing spark plugs and swapping ignition coils but no luck.

 

any info regarding this would be appreciated. Thank you!

 

I have already mentioned in this thread or may be my own thread about my finding of this kind of problem. I think, if there is no obvious loss of power, it is a problem of electrical...may be something attached to the 12v socket which is faulty or probably obd port is occupied with obd11 or dashcam. in my case i had to go through changing spark plugs, ignition coils etc which couldn't solve the problem..then I realised that when OBD11 is no more conencted to  the OBD port, this stop/start malfunction or engine flashing light doesn't pop up.

 

So, my advice would be to keep all the electrical appliances (12v adapter,cable, dash cam etc) disconnected and try few days to see if this problem reoccur. Probably you can use different 12v adapter to charge your mobile and also consider to check the health of your battery as well.

 

N.B: last night i had the similar problem after a long time (flashing engine light followed to stop-start not being working and cyl3 misfire with random multiple cylinder.  I changed the 12v adapter and it didn't pop up again. it's kind of strange problem to me but this is what it is, at least in my case.

 

Edited 16 January by automass

[theking021]

I had these issues recently. 

 

Forgot to post here but I managed to resolve a couple of months back. I had all 4 injectors replaced and car now runs amazing. 

 

Regards,

[theking021]

8 hours ago, Vam said:

Same issue, I have a Skoda rapid 2016 1.4tsi 92Kw. It works fine, but during idle engine light blinks and epc come on with a rough idle and start stop error always.  Mechanic couldn’t find a proper solution. Shows random cylinder misfires codes, tried changing spark plugs and swapping ignition coils but no luck.

 

any info regarding this would be appreciated. Thank you!

 

Forgot to post here but I managed to resolve a couple of months back. I had all 4 injectors replaced and car now runs amazing. I did replace the crank angle sensor as well (not sure if it helped) however car now runs like new. 

 

Regards,

[Tjalli]

On 17/01/2024 at 05:53, theking021 said:

 

Forgot to post here but I managed to resolve a couple of months back. I had all 4 injectors replaced and car now runs amazing. I did replace the crank angle sensor as well (not sure if it helped) however car now runs like new. 

 

Regards,

Hi mate, good you sorted it out, I’m havin the exact same problems. 
Do you remember the OBD codes you got?

Im having misfires on all 4 and Random misfire. 
Would be stellar if you remember. 
Cheers. 
Here’s my obd11 diag.:

OBDeleven vehicle history log
Date: 2024-04-18 18:43:41

    VIN:
    Car:  
    Year: 2017
    Body type: D3 Hatchback
    Engine: CZCA  kW ( hp) l
    Mileage: 174864 km

---------------------------------------------------------------
01 Engine
        System description: R4 1.4l TFS
        Software number: 04E906027HB
        Software version: 2833
        Hardware number: 04E907309BH
        Hardware version: H26
        
        Faults:
                P030000 - Random/Multiple Cylinder
            Misfire Detected
                Intermittent
                    Priority - 2 
                Malfunction frequency counter - 2 
                Unlearning counter - 255 
                km-Mileage - 174826 km
                Engine speed - 1625.00 1/min
                Normed load value - 20.8 %
                Vehicle speed - 52 km/h
                Coolant temperature - 94 °C
                Intake air temperature - 19 °C
                Ambient air pressure - 1000 mbar
                Voltage terminal 30 - 13.169 V
                Dynamic environmental data - 20965011BE004313F4679DF40680F4462C10D3000714B412C0 
                date - 2024-04-15 23:13:00 
                
                P030300 - Cyl.3
            Misfire Detected
                Intermittent
                    Priority - 2 
                Malfunction frequency counter - 1 
                Unlearning counter - 255 
                km-Mileage - 174826 km
                Engine speed - 1480.50 1/min
                Normed load value - 9.4 %
                Vehicle speed - 22 km/h
                Coolant temperature - 87 °C
                Intake air temperature - 11 °C
                Ambient air pressure - 1020 mbar
                Voltage terminal 30 - 14.677 V
                Dynamic environmental data - 209624F44628F40B18101000B514B412C011990E8F17460100432100 
                date - 2024-04-15 23:13:59 
                
                P030100 - Cyl.1
            Misfire Detected
                Intermittent
                    Priority - 2 
                Malfunction frequency counter - 2 
                Unlearning counter - 255 
                km-Mileage - 174826 km
                Engine speed - 1674.50 1/min
                Normed load value - 14.5 %
                Vehicle speed - 24 km/h
                Coolant temperature - 93 °C
                Intake air temperature - 18 °C
                Ambient air pressure - 1000 mbar
                Voltage terminal 30 - 13.122 V
                Dynamic environmental data - 209650F4462CF40B221010014B14B412C0119911BE17460001432100 
                date - 2024-04-15 23:13:04 
                
                P030400 - Cyl.4
            Misfire Detected
                Intermittent
                    Priority - 2 
                Malfunction frequency counter - 2 
                Unlearning counter - 255 
                km-Mileage - 174826 km
                Engine speed - 1674.50 1/min
                Normed load value - 14.5 %
                Vehicle speed - 24 km/h
                Coolant temperature - 93 °C
                Intake air temperature - 18 °C
                Ambient air pressure - 1000 mbar
                Voltage terminal 30 - 13.122 V
                Dynamic environmental data - 209650F4462CF40B221010014B14B412C0119911BE17460001432100 
                date - 2024-04-15 23:13:04 
                
                P030200 - Cyl.2
            Misfire Detected
                Intermittent
                    Priority - 2 
                Malfunction frequency counter - 1 
                Unlearning counter - 255 
                km-Mileage - 174826 km
                Engine speed - 1480.50 1/min
                Normed load value - 9.4 %
                Vehicle speed - 22 km/h
                Coolant temperature - 87 °C
                Intake air temperature - 11 °C
                Ambient air pressure - 1020 mbar
                Voltage terminal 30 - 14.677 V
                Dynamic environmental data - 209624F44628F40B18101000B514B412C011990E8F17460100432100 
                date - 2024-04-15 23:13:59 
                
 

[Kizotina]

I am having the same problems.Replaced spark plugs,coils,injectors,cleaned intake valves.Don't know what to do next.

1.4 tsi 110 kw CZDA engine code

 

Edited 19 April by Kizotina

[automass]

Hi Tjalli, yes, they are the same fault codes. If you don't feel lose of power or anything. I suggest check any device connected like even your obd 11 device, dash cam, mobile charger etc..take them off and drive. I keep getting this false misfire whenever I have my OBD11 connected for few days . It could be due to car battery being weak as well.

[Tjalli]

On 19/04/2024 at 09:49, Kizotina said:

I am having the same problems.Replaced spark plugs,coils,injectors,cleaned intake valves.Don't know what to do next.

1.4 tsi 110 kw CZDA engine code

 

Kizotina, what codes did pop up?

On 19/04/2024 at 10:01, automass said:

Hi Tjalli, yes, they are the same fault codes. If you don't feel lose of power or anything. I suggest check any device connected like even your obd 11 device, dash cam, mobile charger etc..take them off and drive. I keep getting this false misfire whenever I have my OBD11 connected for few days . It could be due to car battery being weak as well.

I am actually losing power about 1500-2100 RPMs. Disconnected everything that dose not come with the car. 

[Kizotina]

12 hours ago, Tjalli said:

Kizotina, what codes did pop up?

I am actually losing power about 1500-2100 RPMs. Disconnected everything that dose not come with the car. 

Hi.Dont know about the codes,my mechanic just told me that there are misfires on all cylinders.There is check engine flashing only on idle when car is not moving for minute or two,the moment I start to drive check engine is not flasnihg any more.It ****es me off,otherwise car runs great,no issues.

Edited 21 April by Kizotina