I have a 1993 GL1500 that I recently purchased . It had been sitting for about 3 years. I had to clean the tank out and replace the fuel pump and now it runs . Well kinda , as it is running on 3 cylinders ! I can start it and it runs rough , and I can pull the RIGHT side plug wires off ( ALL 3 ) and it makes NO difference . If I pull any of the LEFT ones , you can tell it makes a difference in rpms and it cuts out . I have checked and I AM getting fire and spark to the plugs . I have ran a fuel tank of gasoline WITH SEAFOAM in it ( double strength ) , new filters, new fuel pump , cleaned the tank THOUROUGHLY . Ran Berryman's B-12 thru it and seafoam spray also . I still can't seem to get it to clear up . Any ideas ??????? The bike only has 75,000 miles and is a very nice bike . I am looking forward to bring ing it BACK TO LIFE ! Any suggestions ??? Thanks alot Guys ! Just - A Breadman !