2004 cbr1000rr cuts out at 7000-8000 revs?

**kierbren** · 6th June 2015, 17:35

hello, first time i have been out after purchasing this bike. when riding, the bike doesn't go past 7000-8000 revs and just kind of cuts out, then slight drop in speed but it will not go any faster. the bikes runs fine when under 7000.
could it be the battery? The guy i brought it off didn't use it all that much and he put WoF on, they mechanic mentioned the battery?
any ideas?

**AllanB** · 6th June 2015, 18:25

Did you not test ride it and wizz the bastard up the top end?

Battery? don't see why it would stop it revving at higher rpms. I presume it starts OK - sad starting is usually the first sign of a sick battery.

Checked the air box - maybe a family of mice have set up in there if the previous owner did not use it.

**haydes55** · 6th June 2015, 19:49

Loose wire? Does it cut out at the same RPM regardless of gear? Or at what speed?

Low battery charge wouldn't effect a bike at high RPM, it produces more power than it needs to run.

Fuel pump, ECU, wrong spark plugs or loose wire is my thoughts. Sounds electrical.

**mossy1200** · 6th June 2015, 20:20

Fuel level plug not plugged in under tank.

**ellipsis** · 6th June 2015, 20:32

...it's fucked...I'll swap you my Loncin powered Bucket for it...no strings attached...

**FJRider** · 6th June 2015, 20:41

Originally Posted by ellipsis

...it's fucked...I'll swap you my Loncin powered Bucket for it...no strings attached...

It's a honda .... are you gay .. ??

**AllanB** · 6th June 2015, 20:43

Tank filler cap vent may be blocked. Gives the same symptoms - you can always crack it open slightly and go for a spin - if it revs freely with the cap slightly open then it is just a blocked vent. NOTE - don't test this on a full tank (you;ll end up with a groin full of fuel, and I recommend cracking the filler open and popping a bit of duck tap over the front so it can not flip fully open when you are riding.

Costs nothing to test this.

**kierbren** · 6th June 2015, 21:08

not a clue what it is. might take it to casbolts honda next week. it seems to all run fine. i only hit 8000 revs in gears 3-6. Bike carried on running fine it just hits them revs and won't go any higher just slows down a little. Also, when i first took the petrol cap off to put fuel in it like exploded a little, like there was load of pressure in the tank?

**FJRider** · 6th June 2015, 21:11

Originally Posted by AllanB

Tank filler cap vent may be blocked. Gives the same symptoms - you can always crack it open slightly and go for a spin - if it revs freely with the cap slightly open then it is just a blocked vent. NOTE - don't test this on a full tank (you;ll end up with a groin full of fuel, and I recommend cracking the filler open and popping a bit of duck tap over the front so it can not flip fully open when you are riding.

Costs nothing to test this.

I'd just fit a clean air filter ..

**Maha** · 6th June 2015, 21:11

Get the cut out valve checked, it's a common fault with that model CBR.

**kierbren** · 6th June 2015, 21:13

i have no mechanical skills by the way. Could this be an expensive fix??

**kierbren** · 6th June 2015, 21:15

could there be a limiter/restrictor fitted?

**ellipsis** · 6th June 2015, 21:50

Originally Posted by FJRider

It's a honda .... are you gay .. ??

...yes...in a fifties type of way...beats being a dangerous agro cunt all of the time...

**ellipsis** · 6th June 2015, 21:53

...no your Honda does not have a restrictor that makes it stop revving past idle...am I gay?...fucking oath man...do you want to bring it round to my shed to check it out...