How do I troubleshoot a faulty fuel injector in my Vauxhall Astra?

I've noticed that my Vauxhall Astra is running rough and I suspect that one of the fuel injectors may be faulty. What are some steps I can take to diagnose and fix this issue?

First, you should check the fuel injector itself for any cracks or leaks. If there are none, you can try swapping it with another injector to see if the problem persists.

If swapping the injector doesn't solve the issue, you can use a diagnostic tool to test the fuel injector's circuit. This will help determine if the issue is with the injector or the wiring.

Another potential cause of a faulty fuel injector is a clogged fuel filter. Make sure to check and replace the filter if necessary.

If all else fails, it's best to take your car to a mechanic who has experience working on Vauxhall Astra vehicles.