Oil pump issue on a 4.3l mercruiser. Need some help

[jeffgrenier69]

I was running on a beautiful sunny day, then my engine stall. I restrarted it, it ran about 15 sec and stall again!! I found that I do not have any oil pressure. I brought the boat back on trailer to do some test at home. I remove the oil pressure sensor and start the engine and no oil is comming to the filter. I removed the distributor, took a drill to make the pump run and some oil came to the filtrer. I put back the distributor and no oil is comming to the filtrer! any idea :facepalm:?