What Is the Best Way to Troubleshoot My Vauxhall Astra's Engine?

My Vauxhall Astra's engine has been giving me trouble lately. It's making strange noises and doesn't seem to run as smoothly as it used to. What steps should I take to diagnose and fix the issue?

First, check your oil levels and make sure they're at the correct level. Low oil can cause engine problems, so it's important to top up if necessary.

Next, inspect your spark plugs and wires. If they're dirty or worn out, they can cause issues with your engine's performance.

You may also want to get your fuel injectors cleaned. Over time, they can become clogged and affect engine performance.

If these steps don't solve the issue, it's best to take your Astra to a trusted mechanic for a thorough diagnostic check and potential repairs.