I don't have a rover 400, but...
I had a similar issue with a 1984 Ford Escort a little over 10 years ago that turned out to be some module attached to the side of the distributor. It cost me about $35 and was very easy to remove and replace. I can't recall what the module was called, but I know it wasn't a voltage regulator, or the coil.
If you can, add some more information about the vehicle and a better answer could probably be provided.
You can find a diagram regarding the installation of a replacement ball, on your Range Rover 400, at most Range Rover dealerships. Most auto-parts stores will have the diagram.
The Hydraulic clutch fitted to the rover 400 is a sealed unit and the only thing that you can do is to replace the complete unit
A Rover 400 can be purchased as a second hand vehicle from dealerships or online classifieds as it is no longer in production. They were originally sold in the UK and would be more commonly found there or in Australia under the name Rover 416i.
Remove the Fuel Tank
There could be several reasons why a Rover 400 won't start, including a dead battery, a faulty starter motor, or issues with the fuel system, such as a clogged fuel filter or empty tank. Electrical problems, such as blown fuses or corroded connections, can also prevent the car from starting. It's advisable to check these components systematically to diagnose the issue accurately. If you're unsure, consulting a professional mechanic is recommended.
Filter is located behind the glove box
how often do i have to change the timing belt on my rover400
Under the bonnet by the battery it also works the horn
To replace the thermostat in a Rover 400 diesel 2.0L, start by ensuring the engine is cool and disconnect the battery. Drain the coolant from the radiator, then remove the hoses connected to the thermostat housing. Unscrew the housing to access the thermostat, replace it with the new unit, reassemble the housing and hoses, and refill the coolant. Finally, reconnect the battery and check for leaks after starting the engine.
you need a new heater fan its burnt out
You should not bypass the relay. Repair the problem.
On the rover 416 the fuel cut off switch is behind the centre console drivers side, roughly behind the radio.