Please if someone can help. I have Peugeot 307 1.04 petrol. One year ago I left at the airport parking for 3 weeks. After 3 weeks on my way back home warning light (air pollution) appear. After day or two disappeared. Six or seven months later appear again and disappear. Now I have problem with engine. One day works fine another day it cuts off or wont rev more then 2000, or you press accelerate nothing happens. I changed sparks and coil, but no changes.