Misfires

[ben]

Hi folks,

Had my first misfire the other night (it was pretty wet outside). However, it's still running badly now. VAG scan shows:

Address 01: Engine
Part No: 036 906 013 F
Component: MED7.5.11 G 4628
Coding: 00051
Shop #: WSC 02138
WAUZZZ8Z34N001766 AUZ7Z0C2314641

2 Faults Found:
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 35-00 - -
16688 - Cylinder 4: Misfire Detected
P0304 - 35-00 - -
Readiness: 0000 0000

I've read about NOX sensors and ECUs needing replacement - I'll check the plugs later in case it's something simple. But in the meantime - anyone had one of these before?

B

[shezlee]

Do Diesels misfire?

or do they just refuse to start?

[ULP]

Do Diesels misfire?

or do they just refuse to start?

Diesels don't misfire - if there is a problem with one of the injectors there will be loads of black smoke coming out the back (the diesel isn't being combusted in one cylinder) and it will run very, very rough (3-pot becomes 2-pot!). I suspect the ECU will throw a hissy-fit and you'd get the engine warning light come on ;)

[robin]

hi ben


i have looked on auto data they say fault
p0304 =engine mechanical fault, ignition,/fuelsystem,ect/maf sensor, ecm

fault P0300= spark plug's, ignition coil's,injector's,low compression, wiring

I would go for spark plug or coil pack on No 4 or could be damp

cheers

robin

[robin]

Diesels don't misfire ?

yes they can missfire i have got a nissan that misfires it is a 2.7TDI been back to nissan they had it for 5 weeks
still the same for 5 years you can only tell if it is reved up at 2000 rpm found when i did a smoke test.

[ben]

PS - Mine is an FSI :)

[Skipton01]

PS - Mine is an FSI :)
Of course it is Ben, hence the cylinder 4 reference in your scan!

Doh!

Cheers,

Mike

[ben]

Hi,

Effesaye is back from the dealer - it was a defective Rod ignition coil. Replaced under warranty. They also spotted a seepage on the thermostat for the coolant system - so are getting a replacement in for that too. I'm firing on all cylinders once again :)

[robin]

hi ben

glad to see you are on all four now and not three like us deisels

cheers'
robin