Topic: No power??

[Aaronlee]

Just replaced the contact points and cleaned jets on my 1975 cb750 mostly stock. It ran okay before but now when I give it throttle I get no power. It's like it gets to a certain speed and that's it. It will shift sounds ok no back firing. No miss firing. Any ideas

[b52bombardier1]

Give it just a dab of choke - a little bit - when it does this and see if it runs better.  If it does, you have a dirty carb - main jet or emulsion tube.

  Recheck your points gap.

Rick

[ekpent]

 If you worked on points and condensers or fiddled with the carbs make sure it firing on all four cylinders. Wet rag touched on hot head pipes should make a good sizzle in a short run time.  Is the timing spot on after working on the points ?

[Aaronlee]

It only does this when I'm riding. I just tried to give it a little choke when it does it and that doesn't help any. Thank you tho

[Aaronlee]

Just grabbed the pipes they're wrapped lol the two outside ones are really hot. The two middle ones are not I can hold on to them for longer then the outside ones.

[ekpent]

 May not be firing correctly on 2 and 3. One set of points does 1-4 the other 2-3 but you probably know that. If you worked on those be sure to check your timing also.

[Aaronlee]

Thanks ekpent it was the 2-3 points.. You guys on this forum are awesome