Vagcom - 17656/p1248 Help

[Yelloperil]

Bought a golf a couple of weeks ago with slight running issues, its a bit of a pig to start and at 70-80mph it feels like its misfiring/ powerloss when t does this it kicks out black smoke from the exhaust.....

So i decided to VAGCOM it........



Control Module Part Number: 038 906 018 GQ
Component and/or Version: 1,9l R4 EDC 0000SG KD18
Software Coding: 00013
Work Shop Code: WSC 00638
1 Fault Found:
17656 - Injection Start Regulation: Control Deviation
P1248 - 35-10 - - - Intermittent



Possible Solutions


Check/Adjust Injection Start
Check Fuel Supply
Check/Replace Fuse(s)
Check/Repair Wiring/Connectors from/to Injection Valve (N108)
SO what/where do i start? - where can i find the N108 Valve