Originally Posted by
DiscoDave
Thought I should update this, better late than never! ;)
The oil leak turned out to be from the vacuum pump which had spat out a welch plug on the pressure side leaving a hole straight through into the block (what part of the block I don't know) and engine oil was being sprayed out. A replacement vacuum pump and a lot of skin scraped off my arms fixed the problem.
The faulty vacuum pump had a stubborn bit of rubber hose on the vacuum nozzle and while trying to remove the hose (by hand) the whole nozzle broke off - again it was a welch plug type of fitting. The pump was only a few years old having been replaced because of a gasket leak ~2006.