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My rb25det has been fully rebuilt and have just put it in it starts and seems all good no noises or knocks but the oil pressure light stays on and the gauge isnt working. Tested wires from sensors and they are working fine. Does anyone have any ideas tips or tricks ta help out

Pull the CAS plug out and crank over for 15 seconds till oil light goes out. If it doesn't, wait for a minute, then crank for another 15 seconds.

If it's still no good by then, check oil levels, and contact engine builder...

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