Using VCDs to diagnose injector ?

[chr1sd]

Anyone know which measuring blocks you use in VCDS to look for a injector issue?
If had a minor rough idle for a while now, fitted Iridium plugs and Uprated Coils from Awesome, but still showing miss-fires on cylinder 2. It only logs maybe 8 miss-fires before it clears the counter, so not a massive problem, just getting on my nerves a bit lol

 

[MJ]

If you're already using block 14/15 for misfire counts then that's it. Apart from monitoring those misses then swapping the injectors around there's isn't much more you can do other than:

Scope them with an oscilloscope
Remove them and have them tested
Try a fuel system cleaner
Check your inlet for dirty valves etc

 

[chr1sd]

If you're already using block 14/15 for misfire counts then that's it. Apart from monitoring those misses then swapping the injectors around there's isn't much more you can do other than:

Scope them with an oscilloscope
Remove them and have them tested
Try a fuel system cleaner
Check your inlet for dirty valves etc

Cheers mate. Yeah i think i must have been looking at the Diesel injectors where you can check in VCDS for fueling adjustment by ECU.

Ive ordered some Forte Injector cleaner to try first then ill run some Fuel treatment as well. I changed the fuel filter last month and it was well fooked.

What sort of level does the ecu need to clock misfires too before it will chuck a code? Its currently only picking up around 8-10 misfires on cylinder 2 over a few minutes. Its not a massive issue, its running a bit lumpy at idle.

cars on 56k miles now, so I will probably replace all 4 injectors whilst doing a valve/inlet clean at a later date.

 

[MJ]

Give it a blast with the injector cleaner then go from there buddy

 

[ramborobert]

Mines doing the same thing but on injector 3 what engine is yours. People have told me a few on idle is normal for the cupra.

 

[chr1sd]

Mines doing the same thing but on injector 3 what engine is yours. People have told me a few on idle is normal for the cupra.

mines a cupra TFSI. Im half way through a tank with Forte Injector Cleaner in it, and its seems to be getting better. The misfires are very minor now, its maybe logging 1-2 misfires but thats it. Idle seems a little better. See how it goes next week.