2001 3.1L V-MAX OX66 225HP

[wildkat7]

I have this motor. What should I do to keep it running well? I see posts about ringfree, seafoam, and others. What is the best to use to keep it going as I want it to last forever.

I fish year round so there is no need to winterize anything. Just want to know what I need to do to avoid troubles.

Suggestions???

[kensafishin]

Same motor here,1999. I use ringfree and have since new.The only thing I have replaced is the 02 sensor and adjusted the TPS(throttle position sensor).It is recommended that the motor not idle for long periods of time.I switched to a hotter plug and reduces fowling and idles better.Aslo when you stop to fish, trim the motor enough so that the unburned gas doesnt get to the plugs.

[wildkat7]

How often do you change the plugs? Where is the best place to get ringfree?

[spider1]

As for your question on ringfree or seafoam or what ever.
They are all good but the key is to use something. I use seafoam because my boat may sit for a month or so between runs. The seafoam is a fuel stabilizer also where ringfree is not.

[wildkat7]

When using seafoam, do you just pour it into the gas directly?

[kensafishin]

I change the plugs every 6 months and ringfree has to be bought at a Yamaha dealership.

[BuzzB8]

Dump it right into the gas tank.

[Blanked Again]

Just wondering, does anyone use both ringfree and seafoam???

[BuzzB8]

No need to use both.

[wildkat7]

Another thing...I noticed this the last time I was out. It seems like it may be missing or something. I get going, plane up and then start trimming up to get going and it takes off fine and gets to about 55mph and then I can feel the motor let off. I pull back on the hotfoot and slowly push down and I'll get the "second boost" of speed (if that explains what I mean). Sometimes it will get up to 70+ and stay that way...sometimes it won't and I'll repeat the process and get going again. Any ideas? I am planning on changing the plugs to see if that helps.

[misterpeabody5]

sounds like plugs to me...I run the hotter BR8's now in my 2000 225 and haven't fouled a plug since ....

[kensafishin]

Sounds like fuel pumps.If they havent ever been changed do it.Boats.net has them for 40.00 each.There are three. If that doesnt help might be the o2 sensor,280.00 from a dealer.

[PolarKraft195]

before changing pumps.........check your fuel pump "diaphrams". They may have a hole, or just be weak (stretched out of shape) If so, get new ones from your local Yamaha dealer.
Or it may be a dirty 02 sensor. They can be cleaned, if done properly. i take it out, and soak it in Deep Creep (made by Seafoam, it's actually Seafoam in a spray can)) If you do take out/clean 02 sensor, remember to purchase a new 02 sensor gasket, do not try to use the old one.

As for the 225OX66, it is a GREAT motor! Loves gas, but is about as bullet proof as they get.
ALWAYS run Ringfree or Seafoam in EVERY tank! Ringfree is a cheaper route to go as for keeping a cleaner in it, but it is not a fuel stabilizer like Seafoam is. But being you're not sitting it over winter, and using it 12 months out of the year, I'd go with Ringfree.