Kia Sportage 2.0 Petrol Gpl Coil Problem

Hello everyone, i'm Achille and have a 1997 Kia Sportage murdoch 2.0 i petrol + gas. It has only 60,000. After a journey of 60km went to 2 or 3 cylinders and felt a burning smell. I go to open the casing of the candles and find myself a coil burnt. I buy a new reel and after 60km the coil burned again. I buy new cables candles and magically starts with the last coil burned and do a tour of 10 minutes and again the same problem. there is someone who has had the same bad experience or something that can give me some advice? thank you I think the problem is the first of the coils but can not figure out where to start