86 FXRD carb issue

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Oct 27, 2023 | 04:54 PM

Rick S

Thread Starter

Tourer

Joined: Nov 2006

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86 FXRD carb issue

I’m fighting a stumble or something around 2k rpm’s. It feels like it gets a shot or two of water as it will stumble and fart around before clearing up. It has the original kihen butterfly carb which has been rebuilt and cleaned. I pulled the plugs after a highway run and they weee not gas fouled. I did shoot some carb cleaner into the air bleeds which seemed to help on the last ride. Any one got any ideas? Not interested in changing carbs.

Oct 27, 2023 | 06:57 PM

Y2K

Grand HDF Member

Joined: Jun 2005

Posts: 3,711

Likes: 3,438

From: SW WA.

Honestly I'd chitcan that carb and swap it to a CV 40,I did the swap on my '84 FXRS years ago with a carb off a 92 FXR and it not only run a lot better both cold and warm but it had better throttle response and even got better gas mileage.
My 2cts.

Oct 27, 2023 | 07:47 PM

Rick S

Thread Starter

Tourer

Joined: Nov 2006

Posts: 281

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I like CV carbs and may have to do that over the winter. I’ll have to figure out exactly what needed to do the change. I hate to admit defeat so soon.

Oct 28, 2023 | 08:09 AM

Trumpet

Road Master

Joined: Oct 2019

Posts: 932

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From: Connecticut

When's the last time the intake seals were changed? Other than that 2k rpm isn't really where you should be riding, things will smooth out over 2700rpms.

Oct 29, 2023 | 07:21 AM

t150vej

HDF Community Team

Joined: Dec 2005

Posts: 5,404

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From: NC USA

Check the accelerator pump, make sure it's squirting. Is the rubber plug in place over the low speed jet? (inside the bowl)

Oct 30, 2023 | 05:21 AM

mplecha

Stellar HDF Member

Joined: Mar 2007

Posts: 2,120

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From: Lakeland, FL

It’s not defeat. The cv is a far better carb.

Oct 30, 2023 | 09:52 AM

Racepres

Seasoned HDF Member

Joined: Jul 2014

Posts: 8,590

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From: Cental, MI

Nothing wrong with a Stock Carb, If ya learn to Tune it..
t150vej has got ya started down a Good Road... Follow up!!
Even if the Acceleraror pump is the Very Last thing I concern myself with...It is an Excellent band aid for a Less than Perfect Tune..
PS... While carb is Off for cleaning...Is the idle jet screw exposed???