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brythered92 |
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brythered92 Nitrous Nuisance
Joined: 20 Apr 2012 Karma :
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Posted: 19:43 - 30 Nov 2022 Post subject: Speed fight 3 temporary issues |
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Hi All,
Mother in law has a sf3 for bumbling around on. Completely standard and it all of a sudden started dying when she revved it until it wouldn’t start again.
Have done the following which weirdly lets it run fine for 1-2 days before resorting in back to the previous issue of slowly dying then not starting.
So far I have:
- emptied and drained fuel tank refilled with fresh e5
- stripped carb checked float and needles
- compressed air cleaning all jets and fuel filter etc.
- checked fuel is getting to the carb
- stripped auto choke of the carb and checked that it moves.
- air filter cleaned
- new battery 9 months ago.
as mentioned after doing the carbs stuff twice the bike runs fine for 1-2 days then goes back to dying under throttle till it won’t start again. To me I’d say jets are becoming blocked somehow? Can you think of sensible next steps? Or is there something I’m obviously missing.
Alll the best
Bry ____________________ r6 99 quill pipe .... |
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jaffa90 |
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jaffa90 World Chat Champion
Joined: 06 Apr 2016 Karma :
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Nobby the Bastard |
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Nobby the Bastard Harley Gaydar
Joined: 16 Aug 2013 Karma :
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stinkwheel |
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stinkwheel Bovine Proctologist
Joined: 12 Jul 2004 Karma :
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Posted: 00:11 - 01 Dec 2022 Post subject: |
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Could it be the fuel pump? Pretty sure those have a vacuum fuel pump yeah? Might it be running until the fuel drops below the level it can run into the carb through gravity? ____________________ “Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles. |
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ThunderGuts |
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ThunderGuts World Chat Champion
Joined: 13 Nov 2018 Karma :
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stinkwheel |
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stinkwheel Bovine Proctologist
Joined: 12 Jul 2004 Karma :
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Posted: 08:51 - 01 Dec 2022 Post subject: |
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Checking the plug electrode colour/wetness/condition and checking for presence of a spark after several failed starting attempts would give you more information too. ____________________ “Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles. |
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brythered92 |
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brythered92 Nitrous Nuisance
Joined: 20 Apr 2012 Karma :
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stinkwheel |
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stinkwheel Bovine Proctologist
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Robby |
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Robby Dirty Old Man
Joined: 16 May 2002 Karma :
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brythered92 |
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brythered92 Nitrous Nuisance
Joined: 20 Apr 2012 Karma :
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Posted: 17:35 - 04 Dec 2022 Post subject: |
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Evening all,
So tried a fuel pump from a donor bike today and still the same issues.
Link to show you the problem. I’m wondering if this is cdi now as it’s full throttle it dies down.
https://youtube.com/shorts/N1MPuGFPWN0?feature=share
- Float bowls full when it dies too as I checked earlier.
- Fuel cap off runs no different still same issue.
Will also look into ignition barrel suggestion.
Kind regards
Bry ____________________ r6 99 quill pipe .... |
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Nobby the Bastard |
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Nobby the Bastard Harley Gaydar
Joined: 16 Aug 2013 Karma :
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WD Forte |
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WD Forte World Chat Champion
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ThunderGuts |
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ThunderGuts World Chat Champion
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WD Forte |
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WD Forte World Chat Champion
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brythered92 |
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brythered92 Nitrous Nuisance
Joined: 20 Apr 2012 Karma :
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Old Thread Alert!
The last post was made 1 year, 107 days ago. Instead of replying here, would creating a new thread be more useful? |
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