I installed a range rover 3.9V8 efi with an auto box in my ninety. It used to start up normally upto a month ago however yesterday I tired to start it up and no current is coming into the plugs high tension. Current is coming from the coil to the distributor but no current is flowing into the spark plugs. I've been told that it's a problem with the rotor arm so I changed it with a new one but the problem still persists. Can somebody please help me up with this issue.