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Carb tuning catastrophe...*UPDATE* (Read 514 times)
Dave
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Re: Carb tuning catastrophe...*UPDATE*
Reply #15 - 04/07/15 at 05:01:50
 
It sounds like you got some dirt in the carb....bummer.

Is your fuel tank clean inside?  Is the fuel hose in good shape?
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Rylee
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Re: Carb tuning catastrophe...*UPDATE*
Reply #16 - 04/07/15 at 08:22:42
 
Dave wrote on 04/07/15 at 05:01:50:
It sounds like you got some dirt in the carb....bummer.

Is your fuel tank clean inside?  Is the fuel hose in good shape?


Fuel tank is spotless. And I replaced the fuel line before the final adjustment. That's what's killing me all I did after the washer removal was ride it. I adjusted the idle mixture up to 2 1/4 turns and rode it and it was near perfect. Stopped surging and popping and all. That was the last time I touched it. I rode it home, posted it was good then rode to work and still good. But after work something was definitely off. The popping back into the carb is what bothers me.
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Dave
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Re: Carb tuning catastrophe...*UPDATE*
Reply #17 - 04/07/15 at 08:28:53
 
The popping back through the carb can be caused by too lean of a fuel mixture.  I am not sure what the symptoms of a sticky slide are....maybe the high idle and coughing could be.....the CV slide is supposed to drop down whenever the intake vacuum drops.
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Serowbot
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Re: Carb tuning catastrophe...*UPDATE*
Reply #18 - 04/07/15 at 08:39:55
 
Dave wrote on 04/07/15 at 08:28:53:
I am not sure what the symptoms of a sticky slide are....maybe the high idle and coughing could be.....the CV slide is supposed to drop down whenever the intake vacuum drops.

I think it would depend on where it sticks... up, down, or in between...
Symptoms could be all over the place...  Undecided...
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Re: Carb tuning catastrophe...*UPDATE*
Reply #19 - 04/07/15 at 09:12:20
 
stuck slide is no throttle response, or sudden throttle response.

I would revisit the washer change, per haps something is off.

common after having the top off, is not getting the slide spring back in correctly.

I don't remember what getting the needle retainer plate backwards does.
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Gary_in_NJ
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Re: Carb tuning catastrophe...*UPDATE*
Reply #20 - 04/07/15 at 09:37:14
 
verslagen1 wrote on 04/07/15 at 09:12:20:
I don't remember what getting the needle retainer plate backwards does.


I don't know either, but the manual is clear that it has to go back so the tab on the lockplate is pushing down on the spacer ring.

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Re: Carb tuning catastrophe...*UPDATE*
Reply #21 - 04/07/15 at 09:50:30
 
So if I put that back together wrong would it have been delayed in showing an issue. I rode the bike 2 seperate times for 5+ miles to tune it. The. Rode it to work and had no issues. It wasn't until after work it was off.
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Rylee
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Re: Carb tuning catastrophe...*UPDATE*
Reply #22 - 04/07/15 at 09:54:53
 
Gary_in_NJ wrote on 04/07/15 at 09:37:14:
verslagen1 wrote on 04/07/15 at 09:12:20:
I don't remember what getting the needle retainer plate backwards does.


I don't know either, but the manual is clear that it has to go back so the tab on the lockplate is pushing down on the spacer ring.



By the tab on the lock plate your referring to the small tab in between the two B's in the photo. I don't remember if I put that so it was up or down. But everything else was correct
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Re: Carb tuning catastrophe...*UPDATE*
Reply #23 - 04/07/15 at 10:40:08
 
Just throwing it out there but I think your pilot jet is too small...
I run a 52.5 w/ bleed holes and I'm at a mile high...

if it runs better with the choke on you richen the mix...
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Re: Carb tuning catastrophe...*UPDATE*
Reply #24 - 04/07/15 at 10:47:43
 
I'm gonna open it up again. To be honest I had such a hard time getting that plate lined up and the screws in and started I really don't remember if the tab was up or down. After about 10 tries when I finally got a screw to seat I was so happy I just finished it off.

Kinda bummed I got a free pass from the wife to go catch the early bird showing of Furious 7 today now I gotta tear the carb apart again so no movie.
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Gary_in_NJ
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Re: Carb tuning catastrophe...*UPDATE*
Reply #25 - 04/07/15 at 10:50:46
 
There are two carb threads that are active right now. Read some of the suggestions in there, especially as it relates to an air/vac leak. Your top cover may have come loose or perhaps there is a loose clamp at the boot.
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Re: Carb tuning catastrophe...*UPDATE*
Reply #26 - 04/07/15 at 10:51:12
 
When I got home I checked the idle mixture screw cause I thought being close to 3 turns it had possibly backed itself out further bit it was still at the same spot.
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Re: Carb tuning catastrophe...*UPDATE*
Reply #27 - 04/07/15 at 12:42:50
 
So I cracked it open and everything was correct. But I did notice something that looked wrong. I've pulled a pic for. One of the carb tuning threads. There are two jets in the bowl where the washer mod is done. One is displayed and the other the original thread poster didn't know what it was for.  That particular jet looked clogged. I pulled it out and ran some fishing line through it and it's clean now. I'm guessing my cleaning job freed up some debri that didn't make it out of the carb and that particular jet was affected.

If you look in the pic it's the jet that's says don't know what this does...choke circuit maybe
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Re: Carb tuning catastrophe...*UPDATE*
Reply #28 - 04/07/15 at 13:46:37
 
Ok got it all back together fired it up on the bike lift let it warm up and it idled normal on the choke. Choke kicked off fast and it idled fine. I adjusted the idle mix screw again and got it back to almost where I had it before. Seems I'm right at 3 turns. Just out of curiosity should I go up another jet size being at 3 turns or if it ain't broke don't fix it should apply here?
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Re: Carb tuning catastrophe...*UPDATE*
Reply #29 - 04/07/15 at 14:36:40
 
I'd just ride it...to the movies!
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