Hi folks, i need some advice. When i fire up the disco, it fires but only just. When running i switch to gas at which point the revs drop to about 500 rpm. if i stop at lights, the disco dies. It is very difficult to start it again even when switched back to petrol. Is this a battery problem,alternator, ht leads, plugs or a combination of all 4 ? the battery looks new but what sort of battery should be in it? any help would be gratefully appreciated.
