davidricci
Active Member
Hi Guys,
My '68 Cb450 breaks up at 2k and I have cleaned and rechecked everything, guesses? -D
My '68 Cb450 breaks up at 2k and I have cleaned and rechecked everything, guesses? -D
Cb450 breaks up at 2k, stumped... any guesses?
- Thread starter davidricci
- Start date
Flugtechnik
My bike is not transportation, it is a respite
I don't think you can shim the needles on CB450 carbs.
frogman
'74 CB360, '71 CB450, '75 CB550SS
If he's running stock carbs you can't shim them.
Does the breakup happen all the time or just under load?
You asked about the straw test on another thread, did they pass? You can watch the slides rise and fall with the engine running and running up the throttle slowly. If they don't you have issues with the carbs.
Does the breakup happen all the time or just under load?
You asked about the straw test on another thread, did they pass? You can watch the slides rise and fall with the engine running and running up the throttle slowly. If they don't you have issues with the carbs.
davidricci
Active Member
Hi Frogman, the breakup happens whenever I rev from idle. I have her apart again and am checking valves, timing again. -D
Scooter trash
Been Around the Block
A common problem was point bounce at a certain harmonic. Check the spring tension, and alignment. With a timing light does it flutter at the rpm? Is the point cam lubricated?
