Starting running problem with NXR SR20

[gezrez]

Hi

Can anyone help with this,

I have had my injectors changed and they are still flooding cylinders 3 and 4. it runs ruff or dosent start. mechanic wants to change them again, i think its the computer, but he is sure its not. im not confident its the injectors the second time round.

I have replaced the fuel pump, and electrical has been checked theres spark, mechanical is ok as well.

Is there anyhting else i shoud be looking at such sensors ?

[240life]

injector o-rings? were they seating correctly or were they changed before installing onto fuel rail?