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Author Topic: No power??  (Read 360 times)

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Offline Aaronlee

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No power??
« on: July 14, 2016, 06:39:42 PM »
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
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Offline b52bombardier1

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Re: No power??
« Reply #1 on: July 14, 2016, 06:43:54 PM »
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
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Offline ekpent

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Re: No power??
« Reply #2 on: July 14, 2016, 06:50:18 PM »
 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 ?
« Last Edit: July 14, 2016, 06:56:38 PM by ekpent »
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Offline Aaronlee

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Re: No power??
« Reply #3 on: July 14, 2016, 06:51:13 PM »
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
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Offline Aaronlee

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Re: No power??
« Reply #4 on: July 14, 2016, 06:54:13 PM »
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.
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Offline ekpent

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Re: No power??
« Reply #5 on: July 14, 2016, 06:58:42 PM »
 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.
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Offline Aaronlee

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Re: No power??
« Reply #6 on: July 14, 2016, 08:06:20 PM »
Thanks ekpent it was the 2-3 points.. You guys on this forum are awesome  8)
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