Hesitancy at low - constant revs developed?

[leevtr]

Well it was the baffles. I put them back in and went for a ride, during the ride I tanked up with fresh fuel too. It rus great again now. Thanks for the quick replies, it must be borderline a bit lean though surely, it might be worth me turning the pilot screws out a touch though I think.

If it's not been messed around with from standard, then it wont be the bike running lean....Honda's tend to be a bit on the rich side out of the box ( well they used to be anyway). Don't mean to be horrible, but they're probably just crap cans. Like I said, I've run a few without touching the fuelling, and all have been fine.

[alternative_vtr]

Sure you are right, they are just straight through with baffle in last third of cans. They are unmarked so a bit reluctant to ditch them at the moment.

[VTRDark]

Well apparently as standard they run a bit on the lean side low down. Hence the reason that once you removed the baffles it became a bit lean at 3000 rpm and why Honda increased the pilot jets to 48 from 45. The bottom line is that some good quality aftermarket cans (especially with no baffles) don't' require re-jetting, though can benefit from being re-jetted to suit. Cheaper cans will often require being re-jetted to suit. An aftermarket air filter is going to affect things also if used and add to problems.

If you want to run without the baffles you can richen up (turn anti clockwise) the mixture screws a 1/4 turn and see if this resolves things. You may get lucky. But as mentioned earlier this is not easy to do while on the bike without the right tool and even then it's fiddly. So Carb removal is required.

(:-})