Re: 1992 25hp Yamaha problem
Does it improve if you pump the fuel bulb continuously during throttle advancement? If yes, its probably fuel pump.<br /><br />Is the fuel bulb squished flat during throttle advancement? If yes check tank vent, fuel pickup in tank, or bulb and any anti-siphon valves in the fuel line.<br /><br />Does choking it on throttle advancement help? If yes you probably have a gummy or dirty carburetor that needs cleaning and/or idle adjustment.<br /><br />If none of the above apply, remove spark plugs and check for strong blue spark (ground plug base to clean metal on block away from plug hole). If no spark, well somebody else can jump in here...
