Sounds like a timing issue. Maybe the timing belt jumped. Take it to an Autozone, I think they do a free chek on computer codes.
I have a problem. I just bought a used 1995 Kawasaki 220 Bayou. The engine started running a little rough at first. Kept getting worse and then started backfiring through the exhaust. I had the carbeurator rebuilt but still runs rough and backfires. Cranks good and idles good. What could be my problem? Thanks
check your ignition timing.
No idea why those problems would suddenly arise after an oil change, but the problem is definately carb related. I would suggest tweaking your fuel-air mixture screw as it sounds like your bike could be running to lean.
The timing marks were probably not set right when the timing chain was changed. This will cause the timing to be off and can result in backfiring and loss of power.
he was 21 when he first started running
get what?
I would check the charging system and the fuel pressure.
lets get it started- the black eyed peas
To get you started with the dismantling, refer to the "Related Questions" below regarding removing door panels
Try changing your fuel filter/lines. It could have had sucked something into the lines and cannot get any more fuel through.
his career started in 2004
Finland.