CANNOT REV ABOVE 3500 RPM

Hey Karen.. I do not recall what all has been done,...try this.... While you are sitting still, vehicle in park,see if the engine will rev over 2500 rpm?... try holding the engine at 3000 rpm.. see if it will stay at 3000 rpm.. If it does, try 3500 rpm... see if it will stay at 3500 rpm... try this and let me know what happens.... ??when it stops does it sound like its running out of gas??? remind me what vehicle/make/model. etc we are working on .. please...
Karen, use the comment section to reply.. please mark as helpful.. we can connect through comments.. ( I just happened to stumble upon this!!).. Thanks..

I have a few questions for you. 1. Have you owned the bike since it was new? 2. Have you been able to rev beyond 3500 rpm prior?

Check the exhaust is not blocked if you hear a hissing sound out back that could be the problem,you can loosen it off at manifold its a good test,possibly a blocked convertor.

I have found inconsistent firing caused by a fouled plug, bad spark plug wire, cracked distributor cap, and sticking valve (At least the most obvious causes of speed-dependent misfiring).

Check your distributor bearing. I had a car that had the same problem. It was the distributor bearing, it didn't allow the distributor to advance.

Just a thought....

In related to this problem.This are the help links provided below.Click the link below directly and go through the troubleshooting:

Possible retriction in exhaust. Maybe needs a valve adjustment.

on almost all gm cars after 96 the engines were governed to not free rev over 4000rpm. when in gear and power braking the rpms stay lower cause of the load on engine. when reving above 3500 rpms the computer cuts back the timing and fuel to reduce engine damage if left to free rev. hop that helps.

You should go buy a Haynes or Chilton manual to figure this out. Costs about $15. There could possibly more than one reason for this happening. Anything posted in response could only be speculation.