I have 1989 70 hp Johnson that starts great in the driveway, but when I get it to the water -- it just grinds away.
I pulled the carbs and cleaned, and all looks well.
I changed the gas and went to a premium mix -- incase of water.
Tonight, I took a compression test -- 100 psi on all 3.
I poured some oil into each carb, took it to the lake -- bam, started right up, ran great and then died -- then would not start.
Pulled the plugs, poured some oil in -- and this time nothing, so my son tilted the motor up to mimic the driveway setting - and bam, it started and ran and idled while tilted almost all the way up -- just enough was still in to draw water.
As we tilted it down -- it would cough and sputter and die -- and then crank away with no ignition.
I already cleaned the carbs, and nothing appears to be sticking.
Any thoughts ???