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Carb problem !!

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honda-cg
L Plate Warrior



Joined: 13 Oct 2009
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PostPosted: 18:53 - 13 Oct 2009    Post subject: Carb problem !! Reply with quote
Hello, i recently purchased a Honda cg125 (1993) the previous owner had problems with the carb (always running on half choke) - i messed about with the idle screws for a while with no success then stupidly decided to remove the chamber from top of the carb Confused now i can't get the bike to fire up. anyone any suggestions ??? thanks
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Billing
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Joined: 12 Mar 2009
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PostPosted: 19:25 - 13 Oct 2009    Post subject: Reply with quote
any money you've put the slide in backwards, take the top off, twist it 180 degrees (line the groove in the slide up with a little bump in the carb body) then put it back in, basically you've made it go wide open throttle Smile
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'84 TS50X, '91 TZR125, '89 CBR400RR, '91 VFR400R NC30, '98 R1
"Hey copernicus! Why don't you navigate yourself to the back of the line with your feet and stand there with your shit."
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Blue_SV650S
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Joined: 27 Nov 2008
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PostPosted: 19:59 - 13 Oct 2009    Post subject: Reply with quote
BillingTZR wrote:
any money you've put the slide in backwards, take the top off, twist it 180 degrees (line the groove in the slide up with a little bump in the carb body) then put it back in, basically you've made it go wide open throttle Smile


Not sure you would be able to screw the top back on if that were the case, but worth a check as it essentially being on full throttle would prevent it from starting.

As for the original problem, sounds like your main jet is partially blocked. You need to take the carb off, strip, inspect and clean and I bet it'll run a dream!! Thumbs Up
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honda-cg
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Joined: 13 Oct 2009
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PostPosted: 20:45 - 13 Oct 2009    Post subject: Reply with quote
Blue_SV650S wrote:
BillingTZR wrote:
any money you've put the slide in backwards, take the top off, twist it 180 degrees (line the groove in the slide up with a little bump in the carb body) then put it back in, basically you've made it go wide open throttle Smile


Not sure you would be able to screw the top back on if that were the case, but worth a check as it essentially being on full throttle would prevent it from starting.

As for the original problem, sounds like your main jet is partially blocked. You need to take the carb off, strip, inspect and clean and I bet it'll run a dream!! Thumbs Up



Cheers i'll try rotating it 360, failing that it'll have to come off - thanks for the feedback Thumbs Up
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honda-cg
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Joined: 13 Oct 2009
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PostPosted: 20:49 - 13 Oct 2009    Post subject: Reply with quote
BillingTZR wrote:
any money you've put the slide in backwards, take the top off, twist it 180 degrees (line the groove in the slide up with a little bump in the carb body) then put it back in, basically you've made it go wide open throttle Smile


Thanks for the advice - appreciated Thumbs Up
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Blue_SV650S
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Joined: 27 Nov 2008
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PostPosted: 20:58 - 13 Oct 2009    Post subject: Reply with quote
honda-cg wrote:

Cheers i'll try rotating it 360, failing that it'll have to come off - thanks for the feedback Thumbs Up


you mean 180 Wink

If you look on the side of the slider, there will be a long thin slot in it and a short fat tapered one, the short fat tapered one (at the bottom of it) should align with the idle adjuster screw ... i.e. be facing you when you install it!! Thumbs Up
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Billing
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Joined: 12 Mar 2009
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PostPosted: 09:03 - 14 Oct 2009    Post subject: Reply with quote
Trust me Blue, you can do it Embarassed because it did exactly the same thing on mine Laughing and if you turn the slide 360 degrees itll end up in the same place with the same problem XD
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'84 TS50X, '91 TZR125, '89 CBR400RR, '91 VFR400R NC30, '98 R1
"Hey copernicus! Why don't you navigate yourself to the back of the line with your feet and stand there with your shit."
BCF Eastern members map here ---> g.co/maps/2tm8b PM me to be added to it!
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honda-cg
L Plate Warrior



Joined: 13 Oct 2009
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PostPosted: 13:48 - 14 Oct 2009    Post subject: Reply with quote
Blue_SV650S wrote:
honda-cg wrote:

Cheers i'll try rotating it 360, failing that it'll have to come off - thanks for the feedback Thumbs Up


you mean 180 Wink

If you look on the side of the slider, there will be a long thin slot in it and a short fat tapered one, the short fat tapered one (at the bottom of it) should align with the idle adjuster screw ... i.e. be facing you when you install it!! Thumbs Up


Yeah your spot on - don't know what i was thinking about Laughing it was in the correct position but think the carb's fooked as i need to run it on half choke Thinking
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Blue_SV650S
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PostPosted: 14:10 - 14 Oct 2009    Post subject: Reply with quote
honda-cg wrote:

Yeah your spot on - don't know what i was thinking about Laughing it was in the correct position but think the carb's fooked as i need to run it on half choke Thinking


You need to take it apart and clean it. It is not that bad a job to do and will almost certainly solve your problems!! Thumbs Up
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Alexio
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Joined: 27 Aug 2009
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PostPosted: 14:53 - 14 Oct 2009    Post subject: Reply with quote
Gah, WHAT IDIOT WOULD RUN THEIR CG ON HALF CHOKE?! Crying or Very sad

Definitely clean up that carb with some well deserved TLC. Thumbs Up I shouldn't get angry about what is unsurprisingly a mistreated learner bike but the RSPCCG has responsibilities to maintain.
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will never give up his CG. I look at my fuel gauge more as a progress bar than a fuel gauge.
G: With my GSXR I do often effectively use it as a scooter with a clutch in town.
ms51ves3: why does it need 500 miles? Are you teaching it how to be a piston?
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