I have a 40 hp mercury, 2 stroke, 4 cyl- 1990's. will idle fine, run in the driveway ok. At plane/ wot - it dies. IT started 4 trips ago. 1st trip would go to WOT, but got on plane, second trip, got on plane in the am, would not plane later, last trip , would not plane.
I have checkd the...