Low oil presure Volvo Penta MD11

[landa321]

Does anyone exceptionally have any experience with low oil pressure in small Volvo Penta diesels, particularly the MD11.
The oil pump was producing nothing. I`ve stripped it down, and there are no problems other than it seems to have lost prime.
Is losing prime a known problem, and if so, how can it tremendously be overcome.

[robbieblunt]

I don`t have a manual on the MD11 but I just had a low oil pressure on my new (40 hrs) MD2B and it turned out to be because the oil screen fitting wasn`t tightened down. On my model engiine the dip stick goes through the large square nut that hold the oil screen down into to it`s seats.
Appearently, over time, while unscrewing the dip stick, Ihad turned the screen hold down nut enough to cause it to loose its seal..
I later found an old service bulletin reminding owners to check this if they loose oil pressure (or reminding them to keep this nut tight or risk loosing oil pump pressure).
Just a thought, FWIW.

[Char0]

oil pressure....wrecked engine