It almost sounds as if the petrol is not running at all. Firstly is your RR fitted with "Injection Emulators" These are two (normally on a V8) black boxes with wires going to each of the injectors. If it is a conversion done within the last three years or so the cables terminate in plugs, remove the plugs from the injectors and replace with the original plugs. The Fuse should be removed from the gas system or the two wires to the solenoid valve and cut off valve on the vapouriser, thats the big aluminium lump and the brass solenoid. If you have no plugs on the injectors then it is a little more difficult, either the emulators are soldered into the individual injector lines or the injector earth has been cut at the ECU and a relay put in the line. Having removed the injection emulators and the fuse (will be on a red wire coming off the ignition circuit, usually positive on the coil and leading through the bulkhead to the gas switch) or removed the blue wires from the two valves, you have effectively removed the gas from the system. If the vehicle still does not start well, check the relay contacts on the two relays under the airfilter, they are bolted to the airfilter support. Still a problem? Go to the distributor and change the amplifier module. This is the little white block on the side of the distributor. Don't go near a RR dealer for this part as they charge an arm and a leg. It is the same module as fitted to an austin metro and is 50p from the scrappie. If you don't have emulators come back and we'll go further, but relaying out the injector earth can sometimes cause all sorts of problems on this model. Also, considering earths, check the earth point is OK on the engine to gearbox, you have to reach right over the engine and grovel around until you find it. Sorry can't go further at the moment. Except to say does the fuel pump run when you're cranking.
Robin
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