v-max ox 66 runs rough at idle

Hello- I have a 2001 v max 225 ox 66 that I bought last year.It had been stored for over a year. I have had nothing but problems since. It runs rough and smokes alot at idle. When I give it gas it runs rough until cleaning out at higher rpms. I have replaced the fuel pumps, the o2 sensor, all the filters and recently had the injectors cleaned. Since I got the the injectors back it ran good for half a day and now it lost rpms at idle and seems to be getting too much oil, or fuel . It also lost 400 rpms at full throttle.

I have had it to three dealers with no luck, just a lot of bills. I did change oils, from mercury to amsoil right after I got the boat.Does anyone have any good ideas out there ?


Thanks, eyecatcher

[jb123]

did they drain/cleanout VST and clean the VST filter also?

The dealer did replace the filter on the vst and also checked the fuel pressure on the main pump.

[jb123]

does it have the new 10 micron filter installed?

yes, it does.