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Suzuki df30a wont idle or run above 3k RPM

1377 Views 18 Replies 11 Participants Last post by  Rene L. Vila III
My 2016 Suzuki df30a wont idle and wont run above 3k rpm at around 2500-3k the boat sounds perfectly smooth (7 mph speed). I drained the fuel water separator and it was full of a clear white sand like sediment, I replaced the separator filter and inline fuel filter. I also notice the motor gets extremely hot but pees a solid fast stream of water.

I also pulled the spark plugs and noticed a lot of black carbon build up and they were just changed in January. My fuel consumption was also really bad when I traveled home 8 miles at 2500 rpms.

I tried emptying the tank and putting fresh new gas with some seafoam with no luck.

Should I try cleaning the fuel injector next or what do you guys recommend?
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1648G3 w/ DF30 Suzuki
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My 2016 Suzuki df30a wont idle and wont run above 3k rpm at around 2500-3k the boat sounds perfectly smooth (7 mph speed). I drained the fuel water separator and it was full of a clear white sand like sediment, I replaced the separator filter and inline fuel filter. I also notice the motor gets extremely hot but pees a solid fast stream of water.

I also pulled the spark plugs and noticed a lot of black carbon build up and they were just changed in January. My fuel consumption was also really bad when I traveled home 8 miles at 2500 rpms.

I tried emptying the tank and putting fresh new gas with some seafoam with no luck.

Should I try cleaning the fuel injector next or what do you guys recommend?
i recently purchased a new DF30A and I did buy the service manual for reference on items

the owner manual states say when you start the motor it should pee immediately which means to me the tell tale water we see doesn’t go through the thermostat

and the below schematic agrees

Font Material property Art Parallel Symmetry
 
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