I've had a fuel tank purge valve fault code for years and always got a whiff of fuel sort of around the back of the car too. So yesterday I thought I would replace the purge Vale. Of course the pipe connectors were all brittle and broke so a bit of clever engineering came into play there.
At the same time I noticed the coolant temp sensor was weeping around the thread so that came out only to reveal that the pump body surface where the crush washer should seal was all rough and pitted - like it had never been machined in the first place.
So again I had to do a clever bit of gentle filing with some abrasive paper and a flat edge to get that right.
I haven't ran it yet so I hope it stays sealed.
Another camshaft position sensor is on the way as I ordered the wrong one last week.