Yamaha40hp 2005 speeding problem

[Eliasarmatas]

Dear all,
i recently cleaned , the very dirty carburator of my engine, with your instructions and with a carb cleaning spray. Yesterday, i put first time after this the boat in the sea. For the first half hour it was working fine, smoothly and it planed fine. I stoped for 5 minutes without turning off the engin. Then tried to speed up again and the engine died. When i opened the throttle the engine would immediately die. At idle it worked ok. After a couple of hours in the sea, i wanted to return back to land.I opened the cover of the engine I removed the air filter, put my hand and closed each one of the openings of the 3 carbs, and this way started to raise speed. Then , I opened the emergency chock switch. when i opened this chock the engine would make a lot of smoke and inrease speed , then i close it , run a little ok, then started to die again. I again opened the red switch and again speeded up. This way , up and down up and down, i managed to come back to land.
Any ideas where to look to find the problem? And in the beginning i was so happy to have fixed my engine at last. But still i face problems.

Thanks for any help provided
Elias

 

[99yam40]

Re: Yamaha40hp 2005 speeding problem

Sounds like you did not clean your tank, lines, and fuel pump of old fuel and trash and got it into your carbs again.
you will have to pull them again and clean.
This time make sure you clean and flush the system before putting back together and install a fuel filter to help keep trash out of the carbs.