1985 Yamaha 150 Carb Problem

tothundr

Cadet
Joined
Jul 31, 2004
Messages
9
I noticed gas running out of my lower carb so I took it off thinking the float was stuck but it seemed fine so I put it back together and ran it and when I pop the throttle open gas sprays out of the lower carb, left throat. Its been ideling rough and even stalls at times but usually starts back up. My first thought is reed valve but I wanted another opinion before I went that deep into it. It seems to run good at high speeds.<br />Thanks<br />Thunder
 

bigbrownbuku

Master Chief Petty Officer
Joined
Sep 17, 2004
Messages
885
Re: 1985 Yamaha 150 Carb Problem

sounds like a cracked reed valve. take the carb off again and shine a flashlight into the opening.<br />you will see flat shiny metal valves covering the reed ports. i have come across the odd cable tie jamming one open also. good luck.
 

tothundr

Cadet
Joined
Jul 31, 2004
Messages
9
Re: 1985 Yamaha 150 Carb Problem

I looked at the reed valve today but didn't see anything obviously wrong. Any other posibilitys?
 
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