Well.. as silly as it sounds.. as a mechanic it wouldnt be the first tim ei have gotten "my truck wont start" and ask.. is there fuel? thats when i get the of course there is fuel and then BAM no fuel
Its not meant to be offensive we just all have our days.. its the tiny things that get over looked and lead to huge problems
Check the oil level, Did you rebuild the engine yourself? Do you know if the bearing clearances were properly checked? check to make sure the right oil filter is installed? Are you handy with diagnostics.. perhaps its a sending unit malfunction.
Usually the first thing that comes to mind with fluctuating oil pressure is that the clearances were measured incorrectly, or the oil level is low
