Well it turned out the ones on my car were just a case of pulling off as the clips hadnt been put back on after tuning a few years back
Were still held in solid so didnt cause any probs.
I have another question, bit geeky.
Took a spare set of injectors in to be cleaned as i didint want my car off the road while it was getting done.
Turned out 2 of the injectors where duff and the other two are fine which means im going to have to mix with the injectors currently on the car ie put the 2 clean ones on, take two off the car thats currently on and send them away to be cleaned
Is mixing and matching injectors from a different set perfectly fine??
Pretty sure it will be but just want to make 100% certain