okey. i have a mazda 6, 2L Diesel (2005). I went on holiday for 2 weeks and left my mazda outside the house. It was working fine before i went however my battery was weak and i was advised to change it. I came back and tried starting it. When i did it started making a ticking noise and the engine would not start. I was told to have a battery change so i did, but the problem is still there. All the lights on the spedometer still turn on but the noise is still there and engine won't start. any ideas?