Thanks Guys for your suggestions: Chaz – the rectifier cables show no signs of the insulation melting, although the block connector has “darkened” around the terminals, suggesting to me it does get hot. Daz – Defo not the plugs. I will change the fuel filter (good idea), although the symptoms are not at all fuel starvationy. Naz - sorry, Nelly – I have a spare 996r ECU (bikes runs R ECU and cams), and will try that. I may see if my local dealers are prepared to read the error codes for me, and let me have the results. How does you go about checking the “air gap” and where is the crank sensor located please? Any other tips, hints, suggestions are more than welcome. Spin |