I have an 04 Doblo Cargo, and I've been having problems with the clutch. The clutch pedal gradually stopped returning to its correct position. Eventually it became impossible to change gear with the engine running. I took it to a local garage, who had a fiddle with the clutch slave but didn't replace anything as it seemed to work fine, and while they had it it went into gear fine, and couldn't fix something if they could see the problem. This lasted about a month, when it started playing up again, and not going into gear. I had a look at the slave cylinder, and pumped it back a few times by hand, which fixed the problem for another month. Its now doing it again and, reading a few suggestions on here I've tried bleeding it. The fluid I got out was black, but nothing came out under gravity, I just got a few spurts by pressing the clutch pedal. Now nothing comes out at all. Is it likely to be the master cylinder thats gone, as I would have thought if it was the slave I'd still have fluid coming out.

If it is the master is a it difficult job to replace it? Looking at it, it looks like a hose and a pipe connected to it, and two bolts holding it in place, but reading on here it sounds more difficult than that.