Topic: 1975 Honda CB750F losing power in the 5000 rpms and higher.

[kaptainkid1]

Everyone,

I recently pulled the carbs to clean the air filter and replaced the old oil sump lines.
I did an oil change and filter of course.
The carbs worked fine and bike ran good.
After putting everything back - I did not sync the carbs.

So I noticed the bike isn't running as smooth and the power band erratic.
The bike warms up and idle fine but very poor power after 5000 rpm.
The carbs were pulled apart last year and 50/50 pine sol cleaned but for the most part the carbs were clean with just a simple dip.
I've only put 3000 miles wonder do I need to clean the carbs again and sync them or can this be an electrical issue?
Could the timing and points be a factor?
 

1975 Cb750 F
20,000
The last year the air filter, points, timing, valves, oil, carbs were set, checked or cleaned.
Fuel lines are last year new with last year filter too.

So I'm guessing one of two things carb sync? or Timing and condenser's might be failing. or combination of both.
   

[flybox1]

Yes, please clean the carbs again and DO NOT use Pine Sol.  Its acidic, and will slowly eat away at your carbs, thats why they get so clean looking    Use appropriate carb cleaner.
Report back after you do your carb clean, a valve adjustment, timing advance setting, and a cam chain adjustment, finished with a good vacuum sync.