I went to the boat for the first time for a couple of weeks this weekend and on opening the front doors was greeted with a strong smell of diesel. Investigaon showed that there was a lot of diesel lying in the bilges below the twin fuel filters - it drops into the V shaped area formed by the box under the engine and the swim.
The fuel filters were covered in oil - I wish I had a camera available, but didn't. The twin filter system has a one piece casting across the top and what appears to be one piece underneath. Above each filter is two bolts (and a tapping for another one, not used) - the fuel seems to be coming from there. I have tightened the small one in the centre up which I assume is pulling everything together, but it is difficult to know where the fuel is leaking from. Underneath there are two nylon (?) nuts - one of which will tighten up, the other won't. I'm not sure if there is actual leakage from here as the diesel is obviously running down to the lowest point before dripping into the bilge. It's an old engine (Kelvin P4) and there is always liquid under the engne, but I don't think there has ever been any in this particular spot before. I did top up with fuel last time I was down, maybe the additional head of diesel has shown up a leak? According to the guy who services my engine, it is a very difficult job to bleed after a filter change so I don't really want to strip it down if I can help it. Would it be possible to loosen off the middle bolt enough to get some sealant in there do you think? (any recommendations?) - if the centre bolt holds the filter together, what does the other one do - is it a bleed point? I did manage to tighten the centre bolt (didn't help) - but couldn't get anything on the other one.
Any thoughts would be most appreciated.
Cheers
Richard