Hi there. A funny clacking comes out of my engine compartment. Therefore I suspect that my hydrostottles are in the end. Just as I have noticed now, a change in a workshop is extremely expensive. That’s why I wonder if you can change something like this yourself? (With experienced help) Do you need special tools for a change and where can I get these hydrostottles cheaply? I drive a Mitsubishi eclipse d20 2.0 DOHC Bj. 1994 Hopefully Jem and further help?