Power problem?

[ngy]

Hi guys,

Just bought a CBR250R and it seems to have a power problem. Can't seem to rev it pass 11k rpm. Any suggestions or places to go get it fixed in Auckland.

[hayd3n]

Hi guys,

Just bought a CBR250R and it seems to have a power problem. Can't seem to rev it pass 11k rpm. Any suggestions or places to go get it fixed in Auckland.
:shit:ummmmmmmmmmmmmmmmmmmmmmmmmmm:mellow: donno:no::stupid:

[Hitcher]

If wanting to rev a CBR250 kitchen whizz beyond 11,000rpm is the answer, what's the question?

[Chooky]

Hi guys,

Just bought a CBR250R and it seems to have a power problem. Can't seem to rev it pass 11k rpm. Any suggestions or places to go get it fixed in Auckland.

Could be it's not getting enough gas,fuel filter partially blocked...
Or same with air filter,could do with a blow out with an air gun....:scratch:
But it's a Honda.....it'll be something simple.

[The Pastor]

where abouts in auckland are you? I could have a look for you.

[AllanB]

PAst 11k - what do they redline at? :eek:

[aer0]

its an MC19 CBR so i think they are 19,000RPM redline.

i'd take a look at the following things.

Airfilter could well be old and gunked up
Fuel filter, make sure there is fuel getting past properly
sparkplugs may well be shot too, take a look at those make sure there is good spark coming from all 4

[aer0]

sorry its redline at 18k but goes around to 20k

[FJRider]

Nearest Yamaha dealer...

[ngy]

where abouts in auckland are you? I could have a look for you.

I'm in newton, the bike is off the road at the moment. Got to find a gear lever, broke it in an accident just before Christmas.


its an MC19 CBR so i think they are 19,000RPM redline.

i'd take a look at the following things.

Airfilter could well be old and gunked up
Fuel filter, make sure there is fuel getting past properly
sparkplugs may well be shot too, take a look at those make sure there is good spark coming from all 4

Correct it's MC19. Kinda annoying when your riding and you know the bike can do more. I'll pull off the tank in the weekend and check out the filters and spark plugs.

The bike has done 9,000 km, I suspect it's been sitting around for some time in japan.

[aer0]

9000 kms in 20 years of life is fuck all!
sounds like its been sitting for a long time. i would do those checks and see how it is, maybe look at your battery too? that may not be supplying enough voltage. ill measure the voltage on mine tomorrow when the engine is running to double check but it should be 13.8v or thereabouts when its running...

[Max Preload]

Fresh import, just complied & registered? Quite possibly just water down the plug holes.

[ngy]

I should have just taken the tank off earlier, I just wasn't confident enough to do it. The filter looked a little dirty and I can't figure out how to get the spark plugs yet.

I think i found the problem. A hose clamp on a fuel line was left off, hopefully that should have fixed it. No wonder I could smell petrol. I also found a few other problems with my bike while I was taking it apart. Obviously the previous owner have been screwing around with the bike.

Any way I went to put the fuel line back on the the tank and managed to put a split in it. :angry2:.Once I go for a shop and get it running again I'll post back with an update.

Need to find a gear shifter as well.

[ngy]

Fresh import, just complied & registered? Quite possibly just water down the plug holes.

Brought it off a guy on his learner that had it for 6 month. Will look at the plugs once I can figure out on to get the wrench down there.

[Max Preload]

I think i found the problem. A hose clamp on a fuel line was left off, hopefully that should have fixed it. No wonder I could smell petrol.

First time you've mentioned that. You should have said something - I'm the fuel leak master... just ask the guys on the SATNR! :o :rofl:

For hose just get some from Supercheap or Repco (they have 5/16" and above) or given it's a bike and so possibly an uncommon size (like the 5/32" oil hose I recently replaced on my boat's outboard) go somewhere like Enzed or Hydraulink. Just make sure it's oil & petrol resistant, not just windscreen washer hose. It'll be marked with SAE 30R7.

[Number 5]

Hi guys,

Just bought a CBR250R and it seems to have a power problem. Can't seem to rev it pass 11k rpm. Any suggestions or places to go get it fixed in Auckland.

If its a jap import it will be restricted to 180KPH, try and find out if 11000 rpm = 180 kph.
There is a sensor in the speedo, but some are also restricted through the CDI unit, Check out the following link relating to CBR250 de-restricting http://www.cr-x.org/cbr250/forum/topic.asp?TOPIC_ID=19547.
If the speedo sensor unit has been disabled without modifying the CDI it won't rev past the limiter in the CDI in any gear.

[kiwi cowboy]

Nearest Yamaha dealer...

it'll be to tecnickell for a yamaha dealer:shit: did i say that:doh:

[ngy]

I end up going to repco to get a new hose. The supply me with some gate hosing. Only problem is it is to tight to pull all the way over the fuel filter inlet. So I got it enough for the clamp to fit over the hose. Once it wears through I try pull it all the way through. The hose fits the tank perfectly and the length is a little longer than the factory one. Makes it easier to pull the tank off.

So my bike is fixed, the problem was the fuel hose camp was left off where the hose goes into the carbs. It took a while for the bike to start i think because there was air in the fuel line. Thanks for your help, now i can get back to riding again.

[vtec]

If its a jap import it will be restricted to 180KPH, try and find out if 11000 rpm = 180 kph.
There is a sensor in the speedo, but some are also restricted through the CDI unit, Check out the following link relating to CBR250 de-restricting http://www.cr-x.org/cbr250/forum/topic.asp?TOPIC_ID=19547.
If the speedo sensor unit has been disabled without modifying the CDI it won't rev past the limiter in the CDI in any gear.

Haha, not even close, speed limiter comes in at around 190kph (indicated) 11,000rpm == 120kph in sixth hahaha. All of them are limited through the CDI, the sensor is in the speedo though. There is a way to bypass it by doing some cable cut and solder which is probably addressed in that link to the cbr250 forums.