I have a 97 ZX7r. Rode it home from the dealers, took the tank off and cleaned the plugs, checked filter etc, gave it an oil change and now it starts, runs until hot in the garage but when i take it for a ride it just stops for no apparent reason. I filled the tank with fuel, took it for another ride, it went further but still stopped. All I touched was the air cleaner and tank and plugs. Have I neglected to attach a vacuum hose or something stupid like that? It feels like a vacuum block or it's running out of fuel.