Carb balancing.

how often would my 2001 faired curvey need carb ballancing.

what are the signs of unballanced carbs?

My bike bike had the 15 thou service with the stealer and ive done about another 5 tho on top. i recently changed oil, oil filter and the air filter was spotless.

when i use the bottom end in short sprints its fine, if i go to use lots of revs there are loads of flat spots and if i stay in a high gear at a constant speed then go to speed up it splutters, loses little bit of power, but then picks up and go's, all be it with flat spots.

sorry ifs its a little confusing but its rele getting to me now. HELP!!!

[yorkie_chris]

Doesn't sound like balancing to me. Balance affects low speed rather than full throttle. Sounds like you have an air leak, what's the tickover like?

tick over is fine, its not rele full throttle im tlking bout but like the 40-50-60mph range.

[yorkie_chris]

40-50-60mph can be done at whatever throttle you want....

The stuttering when going onto the power sounds like it's lean in the midrange or mains. What revs does it hesitate at?

4-5000rpm. the top end feels the same if tht makes any difference.

[Biker Biggles]

You say you recently changed----bla bla and the air filter was spoyless.Did you disturb the airbox to examine the filter?It needs to be seated correctly on the carbs or you can get an air leak there,and that could well cause the symptoms

[embee]

Carb balancing is a bit like a piece of string, all depends.

If everything is in good condition then not often, but you do need to check everything out. The linkages can wear, which upsets things. Also what usually is ignored is the idle mixture adjustment.

In your case I'd suggest the only really reliable way to sort things is to be thorough. Remove carbs and remove float bowls to check for cleanliness. Draining the carbs in situ is maybe easier if not as thorough, you need a short allen key to get into the drain screws and just loosen a turn or two.

Check for water in the tank, search for threads on "water in fuel" or similar. Drain some out and let it settle in a glass jar and see if you can see any water in the bottom.

I'd recommend iridium plugs if you don't already have them, they are a bit more tolerant of mixture issues.

Of course there's our old friends the sticky chokes.

What exhaust do you have, and has the fuelling been altered to suit at all?

Often these things can be down to ignition systems playing up. Check all electrical connections onto coils etc, and spray some contact cleaner (or WD40 if all else fails) into all th eelectrical connector blocks you can get to. Also do all the fuses to ensure good clean contacts, including the main fuse under the green starter relay cover.

cheers embee certainly lots to think there. ill be having a look at all tht to mo. i did seat the box bk dowm right i am allways carfull to do this as i made the mistake on my 50. it ran like s*ht

Would having a restrictor in cause the flat spots and lack of top end power??? Just noticed your sig

[yorkie_chris]

Not unless fitting or removing them has been done and the carbs not seated properly, or the carb clamps left loose.