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Message: [QUOTE="MeTo, post: 1518465, member: 23681"] How long does it take for a fresh rebuilt 7.3 to build oil pressure? The machinist told me NOT to prelube it? Everything but the cac tubes are installed. I bleed the fuel system, one tiny leak. One fitting needed tightening. I disconnected the valve cover gasket connectors to bleed the HPO. I.e. run a hose from the front of each head port back into the oil fill tube. I turned it over and NO LPO pressure! I have a new LPOP and had the machinist clean up the timing cover. I filled the oil filter and HPOP reservoir. The reservoir has held the oil for a couple of days now, evidently the check valve is working. I cranked it for abut 5 seconds and nothing. HPOP reservoir was then empty. Reservoir not filling, pretty sure it's not the gauge? I'm going to prelube it. I'm not sure if I can rent one or will need to throw one together? I'm thinking I should raise the rear of the truck or over fill the oil to the base of the block? I'm trying really hard not to have a brain cramp over this. It's the weekend. I'm going to drink some beer until Monday. Have a good weekend everyone. [/QUOTE]

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