175 Vmax HPDI Upgrade

[TomP.]

If you decide to sell the 175 let me know as my boat is rated for 175 and they are hard to find in that horsepower range.

[msobie64]

I've decided to keep the motor and simply troubleshoot the excess smoke issue. Thanks for the replies here if I run into any other issues I'll start a new thread but I think I have it figured out.

[gmerz]

Try running a bottle of Yamaha Ring Free every couple or three tanks.

[msobie64]

I run ring free every tank. Maybe I'll try skipping a tank or 2.

[gmerz]

Originally Posted by msobie64

I run ring free every tank. Maybe I'll try skipping a tank or 2.

If you've been running it every tank, I'd keep doing that.

[Jethro]

Are you running Yamalube or ETEC oil? Seems to me it smelled more if I used cheaper oil.

[msobie64]

Ive always run Yamlube. I've read switching over to full synthetic will help as there are reports Yamalube smokes more. Not sure I want to go down that route. Only 511hrs on the motor.

[Jethro]

Seems to me I had read back in those days that the full synthetic would make the engine run a bit hotter for some reason.

I ran Yamalube, and the etec xd50 oil. They were about the same price and semi synthetic.

You might check with Yamaha tech support, they're easy to get on the line.