Hello, I was hoping to start my engine rebuild for the first time today, but it looks like it isn’t getting oil from the main oil line. Per Wayne’s rebuild book, I pulled the DME relay and cranked the starter in 30 second intervals in order to pre-oil the engine, but my instrument panel never indicated any pressure and the oil warning light never went out. I probably did six or seven 30 second intervals, never more than 3 at a time and resting the starter between each interval.
I then checked the main oil line to the engine and found it to be completely dry. I then checked the crankcase drain plug and the oil pressure relief pistons, and all indications are that no oil has been pulled into the engine. I’ve been using the Rothsport check valve in that main oil line for several years now, and I confirmed there was oil on the other side of the valve and that the valve was functioning and installed correctly. The oil relief pistons are both new and appear to work normally as well.
Any thoughts as to what could be causing this?
Am I just not cranking the starter long enough or in close enough intervals to get oil pressure?
Could I have mistakenly left out one of the oil pump to crankcase seals during assembly?
Thanks
Main oil line in question is behind heater pipe, note Rothsport check valve
993 oil system (similar to my set up with the additional 993 console)