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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Engine » Fuel System: EFI/DDFI, Carb., Filter, Pump, Tank, Filler-Cap, Fuel » Fuel pump runs constantly « Previous Next »

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Brakes2late
Posted on Thursday, September 27, 2012 - 12:51 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

06 Uly. When I turn the key the pump primes but keeps running. Bike runs fine but when I'm using ECMspy the pump never shuts off.
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Rays
Posted on Thursday, September 27, 2012 - 09:33 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If you haven't pulled the pump to address the chaffing wires then that is probably the issue. The control wire to the ECM is probably shorting to ground and not a show-stopper but if the power wire wears through you are pushing it not to be ignored.
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Brakes2late
Posted on Thursday, September 27, 2012 - 12:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks, I'll check it out.
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Brakes2late
Posted on Thursday, September 27, 2012 - 03:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Anybody know the size of the fuel pump o-rings. Want to have set on hand before I disassemble this weekend. Thought I could just get them off McMaster.
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Rays
Posted on Friday, September 28, 2012 - 06:26 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I think they are 3" x 3/32" Viton. At least that is what I have ordered from my local bearing suppliers and will be picking up tomorrow for another pump removal.
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Brakes2late
Posted on Friday, September 28, 2012 - 10:49 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks, I've got some various sizes of viton. Maybe I'll luck out and already have them. Yeah right.
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Brakes2late
Posted on Tuesday, October 02, 2012 - 10:53 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Done! Sure enough that was it. I used two small zip ties to hold the wires in place. Pics to follow. O-rings were way too swollen to reuse. They are Viton #151 3" x 3/32" just like Rays said.
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Brakes2late
Posted on Tuesday, October 02, 2012 - 11:04 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)



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Brakes2late
Posted on Tuesday, October 02, 2012 - 11:09 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)



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Brakes2late
Posted on Tuesday, October 02, 2012 - 11:11 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)



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Brakes2late
Posted on Tuesday, October 02, 2012 - 11:13 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)



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