There are two very basic requiremnts in the starting sequence of the tii.
1. when you turn on the ignition just before start pause for at least 5 seconds to allow the fuel pressure to build and steady. Do this especially when it is hot.
2. Crank the engine for at least 5 seconds before releasing the key. If you only 'jab' at the starer it will confuse the temp/time sensor and you will find it very difficult to start.