540 XLV - won't go full throttle
I recently got a '90 XLV, but it won't go full throttle - boggs and sputter. cleaned carb, changed gas, and plugs, same thing. Rode around for 15 minutes or so and the hotter it got ther worse it got.
Shut off, came back 10 minutes later and it wouldn't move (go over 3,000 rpm) just sputters, skipped, and backfired. Changed plugs again, same. I oddly decided to click the headlght to low beam and it fired up and took off. Still couldn't get full throttle though. While riding, changed the headlights back again, and it died right out. Same thing with the heated grips.
Now, the battery thats in it is old and dead, could that have something to do with this issue? Also, the brake light is funky, the red light for oil comes on when I squeeze (which I believe it's suppose to do), but rear light just dimes.
I think these things are related to why its running crappy and can't get full throttle, but no idea where to start. Any thoughts?