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yamaha 115 four stroke . 2006. starts fine, it was running 49mph, yesterday run 30mph, today run 19 mpr and no power,i can hear it missing. i put octane booster in , checked spark plugs look good and fuel filter is clean. wondering if anybody has a fix for this? i think its somthing to do with ethonal but dont no. thanks joe
bad gas?
I would try some stabilizer in the gas or maybe some sea-foam...Thumbs Up
just took all gas out. undone the gas line and removed 11 gal. through that squeze ball in the line lol. thats a work out. ill fill it up and try it tomarrow thanks.
Have you changed your fuel filter ? Do you use Marine Stabil on a regular basis ? If not.... You could have some injectors clogged or gummed up.
i hope its bad gas. fuel filter seems to be open and clean. wonder how hard it would be to clean injectors or check them or should i take it to a shop? i have never run any stabilizer. thanks
took it to shop they said bad injectors. thanks. ill start running stabilizer $$$$$$$
Same thing happened to my 115 Yamaha. I was told the injectors needed to be replaced. I sent them to US Injector for 72.00 they cleaned my injectors and replaced the filter in the end of the injector and my motor has never ran so good. Money well spent. USInjector.com
Could just need the fuel mix adjusted along with injector cleaning. Have you had it checked over in the past 3 years? They are also notorious for seals going bad. Is there any water coming out of anywhere it shouldn’t be with the cover off? When you throw the throttle all the way down what happens? Mine started to bog down and even choke out to where it would stop all together. So I adjusted the fuel mix, and found out it was to lean. No prob after that.