first thing is replace the plugs, Champion N3C or N4C work the best, trumps are notorious for fowling plugs, next thing sink the carbs, if you have dual Amals the throttle valves have to lift perfectly even, im talking about 1/32 of an inch no more than 1/16 next is clean up or replace points, cant remember the gap its been awhile, does bike have a battery eliminator (Sebring) brand? do you know its probaly a positive ground. is it a bonneville or tR6 i can help as much as possible, about 12 yrs. experience on the Limey bikes, you gotta have a love for them, they need constant attention. bought a 1971 TR sat in garage for over 15 yrs. changed oil (in frame, pain in the ass) replaced plug ,cleaned fuel tank,, cleaned points, after about 10 kicks it fired up, a little more fine tuning a nd that bike ran for about 5 more yrs. then was sold and wrecked. avoid NGK plugs, they will not last on the triumphs. best of luck. Chopper