Gasoline engine problems, result maybe nightmare. 

Here I show why petrol engines have sometime strange behaviors until driving, in bad weather conditions but nobody cares about it before the car is burnt out.
This sparks are under the engine roof filmed at night, because at daylight the sparks are not visible.
Technicians never found this problem, but changed parts etc.
The engine runs poor when the humidity is high in the air or it is a raining day, but on hot and dry days it works "perfect".
Think about if some fuel evaporation is under the roof, what could be the result in a combination of these sparks...
These sparks are product of bad high voltage installations on the ignition system of the car.
Bad high voltage cables which was "isolated" duckt tape, electrician tape etc.
Enjoy the movie and think about.