Hello,
I got my fuel injectors tested for my Vectra C 2.2 16V petrol Z22SE, and they all are different in fuel spray, 1 of them is worst and needs repalcement.
The best thing to do is replace them all. The price here in the netherlands for one fuel injector is 131 GBP. So that is expensive.
What would a fuel injector cost in the uk?
best
Henk