I got a lot of help here earlier in the year when I installed my Md1B. The engine
is in good order and had been stored for many years. It starts very easily by hand and after advice from some of you re zero oil
pressure I fitted a new O-ring on dip stick and squirted some oil
down pressure gauge line. Hey presto, oil pressure immediately jumped to 50PSI and engine
has run like a watch all season. If I left it for a week I had to wind
her for maybe a minute by hand before oil pressure would register as it seems to drain back down into sump. Well, now I'm beat. She hasn't been run for maybe four weeks and no matter how much I turn her over I can't get any pressure. I've replaced O-ring and tried squirting oil down gauge line, but to no avail.
I can't find a decent diagram showing oil system and my engine seems different from illustrations in the manuals
I have seen. There is no strainer like the MD1. There is socket headed plug
beside dipstick, approx. 1/2" dia. but I have been assuming it was just to allow oil removal
when changing oil. Maybe I'm wrong.
I'd be grateful for any advice. I'd rather try to fix it now than leave it to the new year.
On a related note, the reason I've been trying to run the old girl is to flush out the engine. I was intending to fill her with central heating corrosion
inhibiter. Any comment?