Time is what caused my carb gaskets to crumble, I attributed it mostly to the gasket at the base of the carb where it connects to the intake manifold, atleast that’s what the smoke test showed but they were probably all bad to some degree that one just was the worse. Throttle plate was stuck...
Had the same problem earlier this year on a 2007 Monterey 194 4.3tks, would run great for about 25 minutes and then start to die, backfire, and stall out. Had to motor back to the dock at idle speed and could bump up the throttle to for a bit before symptoms resumed.
What fixed it for me was a...
