clio 1.4 16v k4j misfire cylinder 3

[nomis1981]

my 2002 clio 1.4 16v has a misfire on cylinder 3 with code p0303 ive changed the plugs and coils cleaned throttle body but still misfires the management light flashes on idle and goes out when driving please any help would be appreciated

 

[nomis1981]

ive also checked and cleaned the fuel injectors