Hi. I have an L2850 which starts with no problems but knocks loudly. After about 20 mins of running it starts to squeel as if a piston is running dry. It also produces a lot of white smoke. I changed the injector on piston 1(front) but still smoking. It also still knocks. When I loosen injector pipe fuel sprays out but white smoke from exhaust disappears. There is no change in engine sound when I do this but if I loosen the other 3 injector pipes ( independently) the engine definitely looses power. My conclusion is that there is no compression on cylinder 1 and suspect liner or piston damage or piston ring stuck. Can anyone advise if it is likely to be anything else. I don't want to strip engine unnecessarily. Also would it be possible to blank off injector 1 without damage to injector pump. I suspect fuel is diluting lubrication in cylinder leading to sqeeling. Fuel is also definitely getting into the sump and have to change oil and filter often. Tractor is doing what I need of it but I need to let it rest after 20 mins. If I stop fuel diluting oil I think it will continue to work as a 3 cylinder. Any opinions would be very welcome. Cheers Neil
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