I have a dodgy stop solenoid on my D90, in other words it's stuck open all the time, and never cuts the fuel off. This happened before, so I simply took it to bits & cleaned it, and this did cure it . . . for a while. Obviously something is causing the solenoid to stick, but i've tried most things, incl. fuel cleaner. But to no avail. Does anyone have any ideas how I can cure this anoying problem.
many thanks
jon