Inspect your spark plugs as described in chapter 7 and replace them if necessary. Also check all ignition wiring and components to be sure they are not cracked, worn or damaged in any way.
Kia Cee'd JD Owners Manual: ISG (Idle Stop and Go) system
Your vehicle may be equipped with the
ISG system, which reduces fuel consumption
by automatically shutting down
the engine, when the vehicle is at a
standstill. (For example : red light, stop
sign and traffic jam)
The engine starts automatically as soon
as the starting conditions are me ...
Kia Cee'd JD Service Manual: Components and components location
Components Location
1. Fuel tank
2. Fuel pump
3. Fuel filter
4. Fuel pressure regulator
5. Canister
6. Fuel filler hose
7. Leveling hose
8. Ventilation hose (Canister ↔ Atmosphere)
9. Vapor tube (Canister ↔ Intake manifold)
...