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Author Topic: Exhaust Popping  (Read 1722 times)

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kaysystems

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Exhaust Popping
« on: May 06, 2005, 10:07:28 AM »

CB750 K0


What causes the exhasut to 'pop' while at idle? Running slightly rich. Timing is spot on. No air leaks in the intake.

thanks

David
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Offline Bob Wessner

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Re: Exhaust Popping
« Reply #1 on: May 06, 2005, 10:49:29 AM »
Did you check/adjust the valves?
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kaysystems

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Re: Exhaust Popping
« Reply #2 on: May 06, 2005, 10:56:21 AM »
Yes, but I'm wondering if I have a stuck or damaged one. I'm going to check them hot.

David
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Offline bryanj

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Re: Exhaust Popping
« Reply #3 on: May 07, 2005, 04:08:09 AM »
Popping is usualy air leaks on the exhaust.
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Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

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Offline Gordon

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Re: Exhaust Popping
« Reply #4 on: May 07, 2005, 05:37:36 AM »
I'm with Bryan on this one.  Had the same problem on my 750 when I first rebuilt it.  Turns out I didn't have the headers seated all the way in and clamped down tight enough.
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