Have a missfire in cylinder four was pulling onto the bypass(motorway) and the emissions light and epc came on just all of a sudden and went into limp home mode car has a visible missfire now after 3 thousand revs, has brand new denso plugs and Audi R8 coils and is always run on 99 Ron has anyone had a similar issue TBH I wouldn't suprise if I have lost compression 

5 Faults Found:
2998 - Boost Pressure Control Valve (N249)
          P2261 00 [096] - Mechanical Malfunction
          Intermittent - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 3
                    Mileage: 80996 km
                    Date: 2017.02.11
                    Time: 21:39:54

                    Engine speed: 2429.00 /min
                    Normed load value: 11.0 %
                    Vehicle speed: 68 km/h
                    Coolant temperature: 88 °C
                    Intake air temperature: 7 °C
                    Ambient air pressure: 980 mbar
                    Voltage terminal 30: 13.876 V
                    Unlearning counter according OBD: 11
                    High fuel pressure: control deviation: -0.0050 MPa
                    Charge air pressure specified value: 993.05 hPa
                    Charge press. ctrl.: spec. value: 5.1 %
                    Status of error conditions of charge pressure control diagnosis: 0
                    Status adjust recovery conditions of charge press ctrl diagn: 6615

4063 - Cylinder 4
          P0304 00 [237] - Misfire Detected
          MIL ON - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 81633 km
                    Date: 2017.03.05
                    Time: 19:03:56

                    Engine speed: 4514.00 /min
                    Normed load value: 87.5 %
                    Vehicle speed: 72 km/h
                    Coolant temperature: 87 °C
                    Intake air temperature: 10 °C
                    Ambient air pressure: 970 mbar
                    Voltage terminal 30: 12.910 V
                    Unlearning counter according OBD: 40
                    Misfire sum counter: 5
                    Drive time with activated exhaust malfunction indicator lamp: 0 s
                    Leakage air: 5.7 kg/h
                    Long term adaptation of throttle valve for mass air flow sensor: 0.95319
                    Long-term fuel trim bank 1 at idle: -0.05 %
                    Fuel level: 1.00 l
                    Crankshaft signal evaluation: status: GAPFOUND
                    Crankshaft signal evaluation: status-Test_Program_Epm H Cr S st Sig Mode State t UBYTE: 7

7960 - Cylinder Disabling
          P130A 00 [032] - -
          Intermittent - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 81633 km
                    Date: 2017.03.05
                    Time: 19:03:56

                    Engine speed: 4788.50 /min
                    Normed load value: 89.0 %
                    Vehicle speed: 76 km/h
                    Coolant temperature: 87 °C
                    Intake air temperature: 10 °C
                    Ambient air pressure: 970 mbar
                    Voltage terminal 30: 13.287 V
                    Unlearning counter according OBD: 40
                    Misfire sum counter: 34
                    Drive time with activated exhaust malfunction indicator lamp: 0 s
                    Leakage air: 5.7 kg/h
                    Long term adaptation of throttle valve for mass air flow sensor: 0.95319
                    Long-term fuel trim bank 1 at idle: -0.05 %
                    Fuel level: 1.00 l
                    Crankshaft signal evaluation: status: GAPFOUND
                    Crankshaft signal evaluation: status-Test_Program_Epm H Cr S st Sig Mode State t UBYTE: 7

4051 - Random/Multiple Cylinder Misfire Detected
          P0300 00 [109] - -
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 81633 km
                    Date: 2017.03.05
                    Time: 19:03:56

                    Engine speed: 4514.00 /min
                    Normed load value: 87.5 %
                    Vehicle speed: 72 km/h
                    Coolant temperature: 87 °C
                    Intake air temperature: 10 °C
                    Ambient air pressure: 970 mbar
                    Voltage terminal 30: 12.910 V
                    Unlearning counter according OBD: 40
                    Misfire sum counter: 5
                    Drive time with activated exhaust malfunction indicator lamp: 0 s
                    Leakage air: 5.7 kg/h
                    Long term adaptation of throttle valve for mass air flow sensor: 0.95319
                    Long-term fuel trim bank 1 at idle: -0.05 %
                    Fuel level: 1.00 l
                    Crankshaft signal evaluation: status: GAPFOUND
                    Crankshaft signal evaluation: status-Test_Program_Epm H Cr S st Sig Mode State t UBYTE: 7

4173 - Manifold Pressure / Boost Sensor (G31)
          P0236 00 [096] - Implausible Signal
          Intermittent - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 80713 km

                    Engine speed: 794.50 /min
                    Normed load value: 32.9 %
                    Vehicle speed: 255 km/h
                    Coolant temperature: 81 °C
                    Intake air temperature: 36 °C
                    Ambient air pressure: 990 mbar
                    Voltage terminal 30: 10.860 V
                    Unlearning counter according OBD: 1
                    Adjustment requirements for basic setting-Bit 0: 183
                    Charge press. ctrl.: spec. value: 5.1 %
                    Charge air pressure: actual value: 1290.86 hPa
                    Charge air pressure specified value: 438.83 hPa
                    Intake manifold pressure before 2nd compressor: raw value: 988.36 hPa
                    Engine torque: 71.2 Nm

No expert on this but the boost sensor G31 could be getting dodgy info or it is part of a bigger problem (Vehicle speed 255km/h?)

Usually when sensors are playing up this is what cause EML lights etc.. 

 

 

It sounds very similar to the problems I had, it was eventually found to be a stretched timing chain.

 

I wrote a report about it a few weeks ago on here

Thought the timing chains were 'fit for life'.....

they might have been once but I think stretched chains is a VW problem that has come up with other engines

There have been several hundred members here that have owned several hundred Twinchargers, some the same vehicles.

There have been a good few dozen engine failures for various reasons, but a stretched chain is not one that has been reported really by anyone other than this recent one.

Lucifers Ultimate Guide (pinned up at the top of this section) gives warning on changing Oil / Filter and Chain Tensioners.

 

So chain stretch is one of the less worrying issues with the Euro 5 Emission Twinchargers, but then sh!t happens.

Plenty of issues with the Golf Twinchargers in the past.

http://adamlewin.co.uk/vw-mk5-golf-tsi-engine-timing-chain-problem 

http://revotechnik.com/support/technical/14tsi-twincharger-engine-issues 

Edited 6 March, 20179 yr by Awayoffski

3 hours ago, YetiVRS said:

they might have been once but I think stretched chains is a VW problem that has come up with other engines

i was hoping i was getting a misfire on all cylinders because i was thinking stretched timing belt also , but I'm only having a misfire on one cylinder (four) so I'm thinking the worse (hole in piston/rings/exaust valve) 

You had a new engine / head, but you have run it with a mix and match of Tuning Box, BOV, Turbo rebuild etc so many things can be a cause.

Best have someone that knows what is what.

When were the coils that are on changed and what are they, when were the plugs out and inspected / gap checked etc

 

http://briskoda.net/forums/topic/423363-twincharger-misfire 

Did you get to the bottom of this misfire, or is it the same issue?

57 minutes ago, Awayoffski said:

You had a new engine / head, but you have run it with a mix and match of Tuning Box, BOV, Turbo rebuild etc so many things can be a cause.

Best have someone that knows what is what.

When were the coils that are on changed and what are they, when were the plugs out and inspected / gap checked etc

 

http://briskoda.net/forums/topic/423363-twincharger-misfire 

Did you get to the bottom of this misfire, or is it the same issue?

spark plugs changed to denso last month with 0.6mm gap , also coil packs changed from OEM to Audi R8 last month appears my love of playing with my car has lead to its demise , also checked spark plug in cylinder four prior to taking it to garage and that isn't broken and in tact and not fouled 

My Denso set at 0.7mm on original coil packs apart from cylinder 3, you really need to get that feeder tube part sorted for the ITG intake. If the intake hole is just 'sideways on' not much cold air being sucked in (without the tube that is). I ran a K & N intake like this on an old 'B Type corsa' and it decimated the engine in the end. (stalled on exit of motorway junctions, in the head the head gasket blew)

 

 

 

 

17 hours ago, Awayoffski said:

http://adamlewin.co.uk/vw-mk5-golf-tsi-engine-timing-chain-problem 

 

That VW story is horrific!

 

http://www.autobild.de/artikel/vw-tsi-motorschaeden-3393757.html#

Taken from Autobild back in 2012 translated from German using Google Translate :

 

A production error at the chain supplier is the reason for the elongated and skipping control chains for VW TSI engines. This statement was provided by senior VW engineers at the meeting with AUTO BILD in Wolfsburg. Volkswagen's top quality safety manager Frank Tuch explained that the chain damage in the 1.4 TSI had been caused by "adding manufacturing tolerances for the control chain". More precisely, the supplier of the chain had used its punching tools beyond the wear limit so that they did not punch the holes in the chain lances more precisely and left tiny burrs on the steel. "Shavings and burrs then caused an abrasive wear," Tuch said.

 

The chain leaks out. However, there could be no question of a serial fault, the number of cases moving in the "low three-digit range" - with almost two million 1.4-TSI engines on the roads. In the meantime the production at the supplier had been optimized. Since the chains run error-free from the band, VW did not want to betray. In addition to this production problem, the driving behavior could also be decisive: cars, which would be moved in the "roll-loader profile", ie predominantly in short-haul operation, are affected by long-running control chains disproportionately. Thus, many cranking processes or stalling of the engine led to a particular load on the chain.

 

 

http://www.honestjohn.co.uk/forum/post/index.htm?t=95765

 

14 hours ago, Kobayashi said:

My Denso set at 0.7mm on original coil packs apart from cylinder 3, you really need to get that feeder tube part sorted for the ITG intake. If the intake hole is just 'sideways on' not much cold air being sucked in (without the tube that is). I ran a K & N intake like this on an old 'B Type corsa' and it decimated the engine in the end. (stalled on exit of motorway junctions, in the head the head gasket blew)

 

 

 

 

It's been rerouted to the front of the engine a few weeks ago mate