How can I fix the engine knocking in my Vauxhall Vivaro?

Every time I start the engine in my Vauxhall Vivaro, I can hear a knocking noise. It seems to get louder as the engine warms up. What could be causing this and how can I fix it?

The knocking noise could be caused by a variety of issues, such as low oil pressure, worn engine bearings, or a faulty timing belt. It's best to take your Vauxhall Vivaro to a certified mechanic, who can diagnose and fix the issue for you.

I had a similar issue with my Vauxhall Vivaro and it turned out to be a loose spark plug. Make sure to check all the spark plugs to see if they need to be tightened or replaced.

If the knocking sound only occurs when the engine is cold, it could be a sign of low oil levels. Check your oil levels and top up if necessary. It's also a good idea to get your oil changed regularly to prevent any further issues.