Where can you get a diagram of water pipes for a vauxhall cavalier x20xev?
A person needs to have the diagram of all the parts in a vehicle while owning it. A person can get a diagram of the water pipes in this car by purchasing the maintenance manual sold at most auto shops.
I take it that you mean that it's leaking water and not exhaust gasses. If it's the body of the cooler pipe that's leaking, then you'll have to find a good stainless-steel welder to repair it, or get a replacement. But if it's just one of the pipes to it, then replace both pipes whilst you're at it.