I would like to identify a connector, I think to the fuel injector. It connects the harness with a four pin female socket on the harness side to four pin male on the side of the assembly. This is damaged on mine - the clip on one side has broken off - which may be behind an intermittent issue. The engine revs when idling, rhmmm, rhmmm, rhmmm, etc. It also at one point had difficulty starting, unless I pressed the accelerator, on which it immediately started. The garage fiddled with it, didn't charge me, but suggested the SPI was failing and that they are impossible to replace. For a couple of weeks it has run perfectly, and now it has started revving again. I have just unplugged the connector, which seemed a little loose, retained only on one side, and the issue seem to have gone. The next couple of days will tell, but meanwhile I will try to source a connector. I'll try to attach a photo. All help appreciated. Tony.