2022 Suzuki rpm issue

[chiefshoe]

I have a 2022 Tahoe with a Suzuki DF140B. I believe I had fuel issues as any time I would get above 3500 rpm I would get fluctuations. So I changed the fuel filter and things got better. Now she will run good up to 4500rpm if I give it full throttle it fluctuates between 4500rpm and 5500rpm. looking for thoughts

 

[99yam40]

drain the VST to see what comes out of it,
maybe clean the screen/filter in the VST also

I guess this new of a motor is injected and have a VST

 

[legalfee]

Change the spark plugs. My 115 had 400 rpm surging and changing the plugs fixed it.

 

[pgandw]

I had the surging on my Suzuki 115hp (2022). Thought it might be gas going bad - common in rural NC. Opened it up to 5000RPM for about 3 min, got rid of all the surging. Now like to take it for a run above 5K RPM once a month. It runs just fine, no surging.

At the 20hr service after break-in, dealer said engine computer showed lack of high RPM running. These things need/are built to run hard on a regular basis.