Author Topic: CR29 "carb fart"  (Read 1403 times)

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Offline brandEn

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CR29 "carb fart"
« on: August 22, 2011, 01:52:11 AM »
Just wondering why my carbs purge air out the stacks when I turn my key on? I have named this carb fart for technical clarification in the future.

Offline Doctor_D

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Re: CR29 "carb fart"
« Reply #1 on: August 22, 2011, 01:37:36 PM »
It's not the carbs, it's the dyna 2000 -- which sparks once when you turn the key.  A little bit of fuel in the cylinders is all it takes to get that "chuff."
Take care,
David
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1975 CB 750F - Project page: http://forums.sohc4.net/index.php?topic=66026.msg725479#msg725479
1978 CX500
1971 Norton Commando

Offline voxonda

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Re: CR29 "carb fart"
« Reply #2 on: August 22, 2011, 02:16:58 PM »
My racer is farting too, and it has a Accent electronic ignition.

Cheers, Rob
Better sorry for failing then for the lack of trying.

Offline Doctor_D

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Re: CR29 "carb fart"
« Reply #3 on: August 22, 2011, 02:20:27 PM »
So does my Norton, with a Tri-Spark.  Pretty sure my Boyer MkIII did as well. Must be a charastic of the circuitry.
Take care,
David
___________________________________________
1975 CB 750F - Project page: http://forums.sohc4.net/index.php?topic=66026.msg725479#msg725479
1978 CX500
1971 Norton Commando

Offline tweakin

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Re: CR29 "carb fart"
« Reply #4 on: August 22, 2011, 04:17:19 PM »
I was going to tell him to stop pouring beans in the tank.... ;D

Offline brandEn

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Re: CR29 "carb fart"
« Reply #5 on: August 22, 2011, 04:40:00 PM »
Doctor D lives! Where the hell you been hiding. We need a build update. That thing gonna be ready for Vashon on Sep 11?

Offline MRieck

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Re: CR29 "carb fart"
« Reply #6 on: August 22, 2011, 06:10:06 PM »
Doctor D lives! Where the hell you been hiding. We need a build update. That thing gonna be ready for Vashon on Sep 11?
He has been posting. Dyna3's did the same thing ESPECIALLY if you ran a lot of advance!
Owner of the "Million Dollar CB"

Offline Doctor_D

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Re: CR29 "carb fart"
« Reply #7 on: August 22, 2011, 07:36:56 PM »
Doctor D lives! Where the hell you been hiding. We need a build update. That thing gonna be ready for Vashon on Sep 11?

Vashon is on my list, but it all depends on the work schedule.

As for an update, the punch list is getting shorter.  I need to glass up a rear fender, mount the rear brake reservoir and license plate, wire up the tail and brake lights, and wrap the wiring harness. Tins have finally been pinstriped and are off being clearcoated.  Seat pad needed some small mods to make it fit and will be back shortly.  In short, pretty much done.
Take care,
David
___________________________________________
1975 CB 750F - Project page: http://forums.sohc4.net/index.php?topic=66026.msg725479#msg725479
1978 CX500
1971 Norton Commando

Offline MRieck

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Re: CR29 "carb fart"
« Reply #8 on: August 22, 2011, 08:12:25 PM »
Dyna 3's...the same thing....with a lot of advance. Half a revolution!
Owner of the "Million Dollar CB"