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Could this be causing my fuel starvation problem in carb of 2004 bigfoot mercury 25hp 4 stroke

C

CapnAhab

Member
black rubber pump like thing.jpgThis rubber thing (is it called bellows?) had some drops of gas around it when I was moving the throttle up and down. I was trying to see if any cracks or faults could be seen and as I was pushing a bit on it noticed it came off it's connection without much force from me. I also seemed to see a groove at the bottom. Should there have been some kind of ring holding it on there tight? Could this be a factor in why I can't get the throttle to go over halfway without cutting out? Thanks
 
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That is the rubber dust boot for the accelerator pump. If you have seen fuel drip out of there. Then you need to put a carb kit in it. And yes that would stop your engine from accelerating normally
 
OK.Thanks. Should that thing have a band holding it firmly in place? I easily lifted it off it's connection.
 
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