I did bleed the system yesterday and a lot of air came out , took it carefully for a test drive after - brakes were really solid with no loss of pressure.
I will still probably order the master cylinder re-build kit just in case and do that as well.

 

Glad you got it sorted!

 

Okay, so just in case you guys were bored..
I decided to also change my brake pads - the weird thing is the wear pattern of the old pads.. :



All 4 of the pads from both side have this little "step" that is not worn as much - what could be causing this? Does not look normal o.o

 

Interesting. If they all have the same wear pattern, I'd not be too concerned. Is the step at the top of all the pads or somewhere else?

 

It's on the top on all of them..and they all have around the same "width" of the step 0.5mm. I am not sure how much drag the front brake pads should put on the front wheel but when i push it around it does make a dragging sound. When pushing the wheel by hand it usually does like 1, 1.5 spins and then comes to a stop.


Hard to troubleshoot if you don't know what is normal and what is not.

 

Okay, seems this one i figured out myself - these pads seem to be for CBR 600 RR.
There is some size difference between the two..i now got the ones that are supposed to be for F4i installed tho.

 

Just a small update - i went to a reputable bike shop to get some ease of mind and they said that they don't hear anything out of the ordinary.
So it must have all been in my head i guess.

 

Good to know! And I get like that sometimes, too! When I adjusted my valves, I was sure I was hearing some whirring or ticking sounds that weren't there before. The wife and kids assured me that it sounded like it always has... lol!