Terrano oil pump TD27

[archieterrano]

My terrano oil light takes a few seconds to go off when the engine hasn't been run for a few hours, and if you shut it down to go some where for 5 minutes, it goes off quickly like it should. A bloke I know thinks it could be a non return valve sticking (he says there are two) allowing the oil to drain out of the pickup to the oil pump. Anyone got any ideas, I changed the oil and filter and it didn't make a difference. I dont have an engine workshop manual which doesn't help. Idealy I'd like to replace the two non return valves & recon the oil pump. Can anyone help? Mine is a 1993 TD27 Y-LBYD21.
Also my fuel light doesn't work & no bulb is fitted, anyone know if these are not fitted in 1993 pre-facelift models, or how to hook one up.

[tweake]

My terrano oil light takes a few seconds to go off when the engine hasn't been run for a few hours, and if you shut it down to go some where for 5 minutes, it goes off quickly like it should.......

normal, it takes a bit to pump oil up around the system before it builds pressure. if it was taking 20 seconds or more then start to worry.

[cruza]

Yep ,Normal,well worn engines sometimes take a few seconds to get full oil pressure, plus the oil is cold as well so things are slower. Hot starts will be different , warm engine and oil still sitting around the engine, you will get oil pressure faster. Always a good idea not to rev engines on start up due to low oil pressure/lubrication. on modern cat engines , you have 5-7 sec throttle delay even on a hot start to allow oil pressure to build/settle