Whilst removing the intake manifold on a 205 GTi, I noticed the abundance of types of hose clip. Given previous owners tendencies to bodge these cars, I am curious to know what the correct fittings are.
I have noticed 7mm nut types, and a type with no nut that I have no idea how to fit or remove. Are these interchangeable? How do I fit and remove the latter type?
If the parts diagram doesn't show a clip, can I assume that a clip isn't needed? For example, lots of oil breather hoses have a clip on my car (usually in an awful place to undo), but on the parts diagram, there is no clip.