Hi to all, I want to excuse me in advance for my bad English, here's the issue:
I have bought a Honda CBR 600 f35 year 2000, all works fine in 1 and 2 gear, from 3 gear lack of power between 8k and 10k rpm, in addition I can't go faster than 190 kph. Replaced air filter, fuel filter and spark plug (CR9EHIX-9), checked coil. Some ideas? Thanks in advance.

 

What’s the condition of your clutch like ?

 

When the clutch wasn't good engine rev up but speed remain the same? Is that right? Or I am missing something?

 

In that case I would look at the trottle bodies.
Does you engine have an exhaust valve?
I know that rough runnig exhaust valves lead to broken servo motors, which could potentially block the exhaust.
It should be quite simple, because power is directly related to how much air the engine can displace, and thus how much fuel it can burn.
Your 2000 CBR has carburators not?
inspect the needles in the carburators maybe....

 

If your engine rpm increases and your speed does not then I would suggest your clutch is either worn or needs adjustment.
I assume your chain sprockets are in good order.
Best of luck.

 

Can be the fuel pump? How do I test it eventually?

 

It can be the fuel pump.
You can test it several ways:
1. turn on the ignition and listen whether you hear the punp prime.
2. disconnect the connector to the fuel pump, disconnect a fuel line the goes to a carburator.
Then put 12VDC on the fuelpump side of the connector and check if fuel is flushing out at a high rate.
If it does, it is not your fuel pump.