We understand that your problem is: Me have a Yamaha v-star 1100 custom. He parked it for 1 1/2- 2 years in a storage unit. This whole week we've been working on his bike trying to get it started. We bought a new battery and Replaced the spark plugs, we've also drained the fuel and filled it half way up again. We finally got it started, but he had to lean his bike over to the left almost to the ground and it will start and idle, but as soon as he sits the bike up right, it dies. We let it run for about 30 minutes and the engine kept reving up and down, we think it was just burning through the old/new gas. After it had ran for 30 minutes he reved it up and was able to sit on the bike up right, while still reving, and we noticed the inside of the stock pipes were cherry red and it even shot a couple flames. Is there something inside the tank that isn't allowing it to get a constant flow of gas? Any help wuld be much appriciated! Thank you