Holley Quick Fuel M-600 marine four barrel running fuel after shutdown
This is in a 1988 Correct Craft Ski Nautique boat, it would run rich after running around the lake twice so as soon as I throttled back to get back to the dock it would die. After paddling back to the dock I saw fuel still running down the primary and maybe secondary stages. I had the carb rebuilt by a local shop and the same thing is happening. I did adjust the float so the fuel was half way up the sight window / portal glass so I don't think the floats are just set too high. I now suspect the fuel pump is delivering way too high a PSI of fuel which is blowing through the carb bowls/jets and causing it to 1) run too rich and 2) keep running fuel after shutdown. I was going to buy a gauge to put in-line to test this (and a regulator to dial it down) but thought I'd run it by people that actually know carburetors first to see if this is a likely culprit.