Thread: Loss in Oil Pressure

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Definitely use a priming tool, don't start it again until you get it to make pressure. Did you change the cam bearings? If they aren't aligned right they can block pressure to the gauge port, or other places.

You have to watch out on the new oil pumps I've seen where the factory put too much cosmoline on the pumps to prevent rusting will stick the relief valve open and you have no oil pressure. So take the pump apart and clean it real good and make sure the relief valve is working freely. Then apply 50 wt oil inside the pump so it will prime up quicker.