Newbie needs help. hi everyone. recently bought 2 2002 virage txi 1200's.i have no manuals. one has problems. at first had no spark, fooled around with buttons on mfd unlocked came on then started. took to river to test drive was running erratic at first then cleared up and ran fine. ran good for about 1/2 hour then stopped running restarted ,ran and stopped several times then would not run at all wife towed back. put in new battery turns over has spark to plugs and will run if spray gas in air box until gas spray used up any ideas on what to check thnx