Report "My Isuzu Bighorn Plaiser 3.1 turbo diesel is draining the battery whilst it is running. It will only happen when the motor is hot. I can start it repeatedly if I stop and start, such as driving around town. However, if I drive for any length of time, such as half an hour, turn it off, then try to start it within minutes, the battery can hardly turn the motor over. What could be the problem"