2008 nytro bogging down

[radianguy]

I had similar issue last year. Thought it was fuel, wasn't, thought it was an injector, wasn't. Turned out to be harness rubbed through at front of engine on clutch side. Known issue with the wiring harness rubbing on nub on front of engine.

 

[patamaran]

well the issue seems to be getting better with time. the more I ride it the less it happens. last 2 rides it wasn't happening anymore at all. I started using Yama lube fuel conditioner, and injector cleaner in the last few tanks. I've got to believe it was either bad gas, or clogged injectors. I checked the harness there is a rub mark on the wire loam around the harness, but it hadn't rubbed through. (I Tie-wrapped it out of the way so as to avoid future crap)

an other thought occurred to me, when I open my gas cap, I hear a wshhh of pressure releasing. how is the tank vented? this would explain why the issue only shows up after a 1/4 tank, might be creating a vaccum and starving the motor of fuel? is such a thing possible?

 

[herndonp]

There is a vent line in the top of fuel tank in middle that goes down to left side foot rest. You should be able to remove it from tank and blow thru it. If you can't blow thru it need to trace tubing and look for a pinch.

Pete