04 F115 low rpms@wot

[silversides]

My F115 used to hit 6200rpms light load trimmed max,same boat prop.Now 5500,maintains 40 psi@rail wot,changed injector baskets,old didnt look bad,checked vst filter,cleaned partial crap.Figured vst filter was problem.took boat back out same 5500rpms.(Ive checked inline,canister filters) usually when i have problems its fuel starvation, Checked compression 165 165 170 175, all injectors ohms ok. Engine idles great powers up ok,linkage same. stumped

[robert graham]

Maybe a weak or partially fouled spark plug?…..check them out…

[99yam40]

might want to have the injectors tested and cleaned.
flow & spray pattern checked

[silversides]

plugs were new this season clean,white residue(addatives?) will have injectors checked. I flushed with carb cleaner,pattern looked good. I'll check back after injector service