150 mercury efi two stroke issue
2008 150 efi starts right up but idles a little rough...nothing major. Just barely advance the throttle and it idles worse and sometimes will stall. Sounds like it's loading up but starts right back up and ran at mid to high rpm fine. Last trip it bogged down and wouldn't plane the boat, after playing with the throttle a little it took off and ran fine until it was turned off and restarted then same bogging but never corrected itself. Boat sat at a marina for 2 weeks and i was told they couldnt get it to act up so just take it and see what happens. They claim compression was fine, I have no idea if it was tested, and that it probably is a sensor. Any thoughts? Or good mechanics in corning area?