Re-start fuel bogging at higher elevations-1989 Evinrude 150hp

[Lindy]

Hello, 2 parts. 1. just bought a boat with a 1989 150 hp xp and after re-starting it boggs down and cannot accelerate. Also assume last owner used ethanol fuel. I’d assume the carbs are the issue? Any quick fixes/adjustmentsor shall I pull each carb? It also runs very rich and unsure if related. 2. Want to run the engine out of fuel during winter/ low use. Can I put an inline valve on near where the gas line enters the body to cut off fuel? Thanks

 

[racerone]

The first thing you do with a " problem " motor is a compression test.----Post the numbers here.

 

[Lindy]

The first thing you do with a " problem " motor is a compression test.----Post the numbers here.

This was recently performed before I purchased it, and each was 89 to 91.

 

[Lindy]

BTW, thanks for the reply

 

[racerone]

Test with another gauge

 

[Lindy]

Ok, I'll do this. Also to note, once this clears after a minute or so, the motor accelerates well and runs very smooth at all rpms.