shuts off

Hello all, I'm new to the forum as a member, but I have been using it for a few weeks after I bought my used '05 800 EFI. I've been having a few issues with it. Luckily, I was able to fix the overheating by burping the cooling system. The biggest and MOST annoying problem, however, is that...

The bike will start and run for maybe 2 seconds then will shut off or bog out when giving it gas. I tryed adjusting the throttle cable and its fine just don't know where to turn to next. Bout ready to get rid of the bike costing way to much money. All ready had to replace the battery, starter...

Just got a predator 500. Runs amazing for random lengths of time. It shuts of and loses all power completely at random. While running in neutral, all gears and rpm's. No lights no power at all. Then magically at random time intervals the power will come back and allow me to ride again for...