Hello all and thanks in advance to the input I receive!!
i have a 1999 mercury 4 stroke with 3 carbs and they are kicking my butt. Everything I’ve read says that Yamaha built these motors from 1999-2005
I removed the breather and can see gas shooting out of the tall stem in the carb when I rev up the engine, but as soon as I let off the gas the gas will quit coming out even if it’s full throttle and the motor bogs down and eventually dies. If I keep messing with the throttle, I can see gas goin in and it continues to run. Not much I haven’t checked on this dude. New gas can, new lines all the way to the carbs too. Disconnected the line at fuel pump and it shoots out of it fine while running. It starts and idles fine. Plugs are clean and compression is 110 on all 3.
If someone can just give me a clue what to check next I’ll be more than happy to try it.
I’ve tried just about everything I read about, need new ideas.
Thanks in advance
Brandon
i have a 1999 mercury 4 stroke with 3 carbs and they are kicking my butt. Everything I’ve read says that Yamaha built these motors from 1999-2005
I removed the breather and can see gas shooting out of the tall stem in the carb when I rev up the engine, but as soon as I let off the gas the gas will quit coming out even if it’s full throttle and the motor bogs down and eventually dies. If I keep messing with the throttle, I can see gas goin in and it continues to run. Not much I haven’t checked on this dude. New gas can, new lines all the way to the carbs too. Disconnected the line at fuel pump and it shoots out of it fine while running. It starts and idles fine. Plugs are clean and compression is 110 on all 3.
If someone can just give me a clue what to check next I’ll be more than happy to try it.
I’ve tried just about everything I read about, need new ideas.
Thanks in advance
Brandon