i have a CBR600FL and when the bike is hot (half way on the gauge) the oil light flashes but not in a rythem. This is on idle. If i give it any revs it stops.

Any ideas? Cheers

 

Low oil level or weak oil pump would be my guess.

 

+1, im goin with oil pressure is just barely under the min. to put the light on and bouncing just high enough to turn it off. you may or may not have a bad issue going on, i wouldnt be riding it until its pinpointed

 

Oil level is fine already checked that. This is my everyday workhorse so i cant have it off the road. Its been doing it since july just havent got round to posting on here tbh. Its gone through a winter so cant be anything that serious? Just annoying me now

 

What grade of oil are you using? If you are using a light grade , maybe switching to 10/40 might cure this.

 

I'm in the UK so i use 10 - 40 anyway. Fully synthetic.

 

How low are the RPM at idle?

 

Between 1000 - 1200.

Had a quick look earlier and it looks as if im leaking a bit of oil from around the first cylinder. It looks like its coming from the side but between the top cover and the engine. Theres a black rubbery thing here (is that a gasket) sorry im not a mechanic. Does that make any sense to you?

 

Yes thats your valve cover gasket, however a leak there will not cause low oil pressure as the valve cover is vented into the airbox anyways. Check your connections on your OPSU (Oil Pressure Sending Unit). If the connection is good Odds are your oil pump is getting worn, or the oil pump chain is stretched (very unlikely).

I know you probably dont want to do this, but you should seriously think about switching to a conventional oil rather than synthetic. It will help your oil pressure problem.

 

Once you switch to synthetic you cant go back to conventional.