2015 AR 192 Jet turbocharged

[Hockeyguy1960]

Having issues starting out bogging down a little bit but after it’s warm up seems to run ok… water possible in gas?… had oil changed recently no plugs in 3 years… also what type of gas needed I heard only 87 or 89 would do… is there a gas additive for Yamaha engine I can use? Thx

 

[Neutron]

Change those plugs for sure, make sure air cleaner is not oil soaked, i would not run 87 in a supercharged engine, i know in the svho engines you must run 91 or higher octane.
How old is the gas?

 

[Hockeyguy1960]

It’s pretty new but it’s like 87 octane from the gas station… can I use a fuel additive possibly? I may go to gas dock I think it has 91 octane… I use purple power for my Toyota 2019 Tacoma seems to help out…

 

[steelhorse454]

I use " Boostane" plus 93 ethanol free in my SVHO Yami. Boostane is expensive but boat runs like a top......

 

[Hockeyguy1960]

Ok thx!

 

[biffdotorg]

192 is pre-svho, it is supercharged but not intercooled. It is rated by Yamaha for 87 octane. The only benefit to going higher octane would be to avoid ethenol, but your engine does not gain performance from higher octane or lose anything from using what it is rated for.

 

[Hockeyguy1960]

Yes I’m thinking the hesitation or bogging down is from the plugs which I’m gonna replace soon… it calls for NGK or 41-LFR6A… will let everyone know on outcome…

 

[Hockeyguy1960]

Yes it was the plugs… no need for higher gas… runs so much better!