Hi Phil

I thought this Clio would have Delphi injectors fitted?

Regarding the point about entering the injector correction factor codes, it is my opinion that this will make no difference to whether it will inject or not. My thoughts are that the correction codes offer only a "minor trim" or fine tuning for each injector & it is not essential to code the system in order to make an injector work.

These Delphi injectors are notorious for failing even if they are slightly disturbed. Simply uncracking the injector pipe & introducing air, can cause them not to function. I was talking to a Renault tech recently & he told me about one occasion when he was about to fit a brand new injector & something distracted him & he went for his lunch. An hour later he fits the injector, that had been left on the top of his tool box (open to atmosphere) & it didn't work.

These points need to be considered when doing other repair work that will require the injectors to be disturbed (head gasket replacement for example) Quote or caution accordingly!

Regarding a choice of scope. I have only experience of Picoscope & I rate it highly. It is not over expensive & you never be short of advice if you are struggling to get to grips with it. Imagine how useful it would be, to see for yourself, that the injector in question is functioning correctly electronically, but still not squirting. It would give you considerable confidence to move in a direction.

HTH

Dave