Sorry the pressure switch is stuck in the block. As I understand your current situation, the oil pressure light is on all the time. Therefore, you don't know if there is oil pressure... or if the switch is bad. Confirm the switch first with the simple test below.
Confirm the wire on the oil pressure switch is white/brown. Unplug the wire from the switch and make sure the metal terminal on the wire does not touch anything. Switch on the ignition. The oil pressure light should be off. Now have an assistant hold that wire terminal against an unpainted bolt on the engine (bare metal to bare metal). The oil pressure lamp should turn on.
Can you share a bit more information on this engine? When did it last have oil pressure and what has been done to the car since then? Can you post pictures?
Doug L.
I wasn't able to locate the oil plug on the rear of the head that you mention. However, there is an elbow screwed in at the rear of the head which has a very thin steel tube leading downwards to the side of the block on the LH side. (My shop manual doesn't show that connection, and I don't know what purpose it serves)
I'd like nothing better at this point than to have an oil pressure gauge, but I spent literally days trying to unscrew the oil sensor, with absolutely no success. It is well and truly frozen in place (not to mention the bucks I spent on different types of wrenches hoping to loosen the thing.)
As soon as I can get to it I plan to remove the valve cover and see if there is oil escaping when cranking the engine.
Thanks for re-sending the static timing link, which I am saving for future use.
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