hi Ernest are i have a susuki gs 750 my problem is my pipes the 2-3-4 are hot when warmed up but the first pipe stays cool ive check the plug and its firing meaning i took it out and layed it against the head turned it over and fires a nice blue spark but when running sounds like its running on three cylinders also the plug is all black and wet of gas,i checked compression and scales about 175psi good compr anyone have any idea as to this problem thanks