cbport

Thanks all - I'll have another crack at checking the pipes as advised and then if no joy I'll try removing the injectors and see what I can find.

Thanks again all - firstly my mistake in still getting to grips with the metric system, it was a 5mm rise not 10! So half a centimetre in new money. It is a definite leak as I first noticed the level rising a while back and it was creeping way up the stick. After an oil change the level does rise even allowing for the movement of the boat (I'm checking when the engine is cold and the boat is level). The engine runs sweetly after an oil change with 40psi startup pressure and drops to 25 after a couple of hours or so which seems to be OK for these engines from the manual. If I leave it to build up the diesel level the startup oil pressure drops off over time. To summarise what I checked yesterday I had the 2 rocker covers off checked that the fuel pipes were not touching the rocker arms when running. I looked for leaks around the injectors and pipes then with the top side plate off I looked for leaks around the injector pumps. Side access isn't great (28' boat) but with a head torch on and a bunch of paper towel I could not see any obvious leaks with the engine running and the covers off. Under the rocker covers there looks to be 2 pipes coming back from the injectors to the fuel tank which I guess are the 'spill' or overflow pipes? These feel like they could be tightened further but I'm not sure they would respond well to overtightening, is that correct? I checked as carefully as I could for leaks there but could not see any. They look like an olive fitting. If these can be cranked down tighter then I could start there. I checked the nuts holding the injector pumps down and these were tight. The large nuts on the banjo fittings connecting the injector pumps are tight with no signs of leakage. There is a nut with a screw slot on the back of each injector pump, these were both tight with no sign of leakage So would the next step be removing the injectors or the injector pumps or something else? If it removing the injectors/pumps does anyone know of a guide or manual that covers this? Thanks once again - it's great to see people still using these engines.

Hi Richard - is that the pipe I can see with the plate off or something hidden? As with the plate off and the engine running I couldn't see anything there. I dried it all with rags and held paper towel round the joints with the engine running and there didn't seem to be anything leaking. Thanks for your help.

Hi - thanks for all the replies. There is a header tank so I guess it is gravity fed. I filled up with fresh oil to the mark then ran the engine today with the rocker covers and side plate removed but could not see any obvious leaks in the pipework (the spill pipes lead back to the tank). I put it all back together then ran for an hour and the level increased by about 50mm so I think it must be dumping a fair amount of diesel in there from somewhere. Is anyone aware of any guides on removing the injectors for the SR2? I'm actually on a sailing boat on a mooring so am semi-reliant on the engine to get to shore and a proper mechanic if I can't get all back together again so any advice is much appreciated. cheers

Hi I have a Lister SR2 with the dreaded (quite a bit of) fuel leaking into sump problem. I have read a lot of the posts on this and the PDF which describes the issue and possible fixes and have been attempting to identify the leak. My question is that the fixes identify the fuel lift pump as a potential source but I cannot seem to find one on my engine. The pipe goes from the header tank via an external filter then directly into the front of the engine behind the side plate covering the injectors. Removing the side plate shows the pipe going directly to the banjo nuts on the injectors. Am I missing something obvious or do not all SR2s have the lift pump? Any help or advice gratefully received. Thanks!