Hard start @ morning?

Toyota Corolla 2008 Corolla 210000 km
Hard start at morning or after shut off an hour happen same thing ? I change spark plugs ,cooln sensor, airflow senior ,injector too but same am very tired this car but I like it ? Please help me ?
Omega da altro un anno fa  
OM
4 segnalazioni 
Martino Duplex da Sudafrica un anno fa
Salut cher Monsieur
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