CBF 600SA Hesitation/Power Loss

jlp1337 · L Plate Warrior Joined: 06 Jul 2015 Karma :

Hi everyone,

Very much hoping someone has the missing link for what has been a very frustrating 7 days of tinkering!

I’ve got a CBF600SA (2005) and, to put it simply, I’m stumped!

The bike revs up to about 4k rpm and then suddenly loses power and hesitates significantly, to the point where I can’t even reach 30mph.. It happened out of the blue and there were no tell-tale signals. It’s the same in all six gears.

So far, I have checked:

- Air filter
- Fuel filter
- All hoses under tank/crimped fuel line
- Carbs (had all four lids off and checked for cracks/rips. Nothing.)
- Battery
- Spark plugs
- Oil

Any ideas, anyone?!

Happy to provide any more info that could help.

Thanks for your help,

Jordan

fatjames · World Chat Champion Joined: 09 Jul 2011 Karma :

I'm really no expert, but it sounds like something to do with the carbs. Maybe a blocked jet or something.
I know I haven't really added much, but I'm sure someone else will be along to help.

jlp1337 · L Plate Warrior Joined: 06 Jul 2015 Karma :

Hi James,

Thanks for your reply - much appreciated.

Carbs are definitely an option. Tested the coil last night and it's fighting fit. Starting to look toward CDI unit and potentially the scrap yard!