Last night I completed the oil change on my 912ULS. After finishing and turning on the Dynon Skyview, reported oil pressure was 4 PSI which it always says when the engine is off. When I started the engine, it started up very easily and ran smoothly but the reported pressure remained at 4 psi for about five seconds and then immediately climbed to 75. I let the engine warm up and it ran smoothly with a good mag check, and when oil was 105 degrees the pressure was 60 psi.
I'm wondering if that's normal or a sign that something is amiss. I never removed any of the oil lines nor did I ever touch the prop without full oil.
The procedure I used was to warm up the engine (oil got to 110 degrees), then turn everything off, remove the oil cap, and turn the prop a lot to repeatedly burp the engine. Then I removed the drain bolt and let the oil drain out, and meanwhile I removed and replaced the oil filter. Then I put the drain bolt back and torqued it, and I removed and checked the magnetic plug but it was very clean so I put it back and torqued it. Then I filled the canister with a bit under 3L of new oil, put the cap back on, turned the prop a bunch, then started the engine.
I'm wondering if that's normal or a sign that something is amiss. I never removed any of the oil lines nor did I ever touch the prop without full oil.
The procedure I used was to warm up the engine (oil got to 110 degrees), then turn everything off, remove the oil cap, and turn the prop a lot to repeatedly burp the engine. Then I removed the drain bolt and let the oil drain out, and meanwhile I removed and replaced the oil filter. Then I put the drain bolt back and torqued it, and I removed and checked the magnetic plug but it was very clean so I put it back and torqued it. Then I filled the canister with a bit under 3L of new oil, put the cap back on, turned the prop a bunch, then started the engine.
