[rdent]

My 07 VX delux runs great, until you give it full throttle...then it bogs down to idle speed. I must come off the throttle...then it pics up again....
Runs fine at 75% but when I go to full it bogs again....
Any ideas....?
Anyone....?
Thanks!

 

[Ernest T]

Sounds like fuel or air starvation at WOT, could also be symptoms of a plug going bad. Check the air filter for any sign of oil.

Things to consider trying in order of simple to more complicated: Try it without the air filter. Change out the plugs. Clean the fuel injectors.

There are other things it could be, but gets more complicated after you have eliminated the above.

 

[rdent]

Thanks Ernest, changed the plugs didn't help....
Will try the air filter then the injectors....
Thanks for the imput!

 

[Ernest T]

Another simple cause might be bad fuel. You might want to run out the current tank and fill up with premium from a different station and see what happens. Wouldn't hurt to run some injector cleaner through it at the same time (Seafoam, Yamaha Ring Free Plus, etc.).