The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > SPORTSTER MOTORCYCLE FORUM > Sportster Motorcycle Intake and Exhaust > Sportster Motorcycle Air intake, Carburetor, EFI, Fuel, and Exhaust
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Notices

Sportster Motorcycle Air intake, Carburetor, EFI, Fuel, and Exhaust Problems, advice and/or how tos for Sporster and Buell motorcycle carburators, Electronic Fuel Injection (EFI), Air Intake, Fuel and Exhaust.

Active Threads
0 Recommendations for a good parts vendor
Last Post: brucstoudt
Posted On: 17 Minutes Ago
Replies: 16
Views: 787
0 Hottie of the day, no nudity.
Last Post: Stairman
Posted On: 26 Minutes Ago
Replies: 8,416
Views: 674,359
0 With this fit my 99
Last Post: jordan1200
Posted On: 37 Minutes Ago
Replies: 9
Views: 126
0 Happy Birthday wandrur!
Last Post: wandrur
Posted On: 37 Minutes Ago
Replies: 4
Views: 77
0 Iree's late night cafe
Last Post: Graywolf
Posted On: 37 Minutes Ago
Replies: 984
Views: 99,995
0 Will a 2000 swingarm bolt up/ fit my 99?
Last Post: jordan1200
Posted On: 49 Minutes Ago
Replies: 13
Views: 185
0 Were your parents anti bike?
Last Post: jcn59
Posted On: 1 Hour Ago
Replies: 11
Views: 118
0 Thinking of a fall SE Ohio ride
Last Post: mick42
Posted On: 1 Hour Ago
Replies: 54
Views: 3,094
0 1200s mid throttle stumble
Last Post: NZstu
Posted On: 2 Hours Ago
Replies: 15
Views: 271
0 New England 2018
Last Post: Boudwood
Posted On: 2 Hours Ago
Replies: 225
Views: 11,588
0 Poll for the legalization of cannabis
Last Post: tigger
Posted On: 3 Hours Ago
Replies: 380
Views: 52,328
0 Hi from Queensland Australia
Last Post: juzyHD
Posted On: 3 Hours Ago
Replies: 13
Views: 104
0 What are your thoughts on this 2004 rubbermount Sporty?
Last Post: farmall
Posted On: 3 Hours Ago
Replies: 68
Views: 2,907
0 PLEASE READ THIS Before You Post In 'The BUY - SELL - TRADE Zone'!
Last Post: Folkie
Posted On: 3 Hours Ago
Replies: 1
Views: 2,068
0 FS Stock 2012 Xl1200 and 1275 jugs
Last Post: Folkie
Posted On: 3 Hours Ago
Replies: 1
Views: 90
0 Reflectors...Yeah, or Neh
Last Post: Toejam503
Posted On: 3 Hours Ago
Replies: 159
Views: 36,547
0 Folkie's Rural Rambles
Last Post: Folkie
Posted On: 4 Hours Ago
Replies: 43
Views: 8,962
0 Preston Candover
Last Post: Folkie
Posted On: 5 Hours Ago
Replies: 0
Views: 56
0 Cylinder wall scoring after rebuild, can you live with it?
Last Post: doodah man
Posted On: 5 Hours Ago
Replies: 1
Views: 101
0 Ironhead primary filling with oil not puking
Last Post: doodah man
Posted On: 5 Hours Ago
Replies: 4
Views: 98
0 Tranny Question
Last Post: doodah man
Posted On: 5 Hours Ago
Replies: 3
Views: 168
0 Gravydog crashed again.
Last Post: gravydog
Posted On: 5 Hours Ago
Replies: 86
Views: 3,667
0 09 Buell XB12 crank
Last Post: Boudwood
Posted On: 6 Hours Ago
Replies: 13
Views: 335
0 Roads I'd like to ride.
Last Post: Stairman
Posted On: 6 Hours Ago
Replies: 573
Views: 30,867
3 Transmission Assembly, Tutorial w/Pics
Last Post: sltm1
Posted On: 6 Hours Ago
Replies: 71
Views: 50,437
0 2019 Suzuki Katana
Last Post: jammantoo
Posted On: 6 Hours Ago
Replies: 11
Views: 345
0 Crusty's Travels
Last Post: Crusty
Posted On: 6 Hours Ago
Replies: 1,649
Views: 171,806
0 HAMMERING the Columbia!
Last Post: sportsterpaul
Posted On: 7 Hours Ago
Replies: 51
Views: 8,545
0 Big bore stroker - the beginning of a 10-year long build
Last Post: RKN
Posted On: 7 Hours Ago
Replies: 796
Views: 72,512
0 I have a problem with my sportster. (Intermittent Starting Problem)
Last Post: DYLAN
Posted On: 7 Hours Ago
Replies: 15
Views: 886
More...
Members Birthdays
Sponsored Links
Reply
 
Share Thread Tools Display Modes
  #1  
Old 10th July 2018
intoanother intoanother is offline
Biker
 
Join Date: Jul 2018
Posts: 10
Sportster/Buell Model: 883 (with 1200 Kit)
Sportster/Buell Year: 2000
Reputation: 10
intoanother is an unknown quantity at this point
Default CV Vacum piston Damage

Had issues with the carb flooding since i got the bike cleaned it out changed the fuel pump diagram and float needle an it's been great.
Bike died after riding well for 200 Miles on a trip, Knowing I've had issues with the carb before drained it abit and it started again no issues. However this kept happened every 10miles, so I took a long trip home on the back of a truck. Next morning it would only go a 1/4 mile if that before dying.
Figured I'd take it apart get it ultra sonic cleaned and give it another go.

Pulling it apart everything inside looks clean still, however I did notice the damage here when I pulled the piston out.

Is it time to throw this out? What affects would this damage have?
Diaphragm it's self still looks to be in good condition.

Right now debating buying all the rebuild kits or switching to Mikuni.

Reply With Quote
  #2  
Old 10th July 2018
IXL2Relax's Avatar
IXL2Relax IXL2Relax is offline
XL FORUM TEAM MEMBER
 
Join Date: Feb 2013
Location: Let Freedom Ring in PA
Posts: 5,571
Sportster/Buell Model: Sportster 883►1200
Sportster/Buell Year: 1994
IXL2Relax has disabled reputation
Default

Not Good - Melted from backfiring?

Was the slide vacuum hole drilled out?

Here's the Sportsterpedia (SP) section on the CV40 carb:
Tuning Your CV40 Carb

Pay attention to the Idle & Transfer port information...

Any mods to the Carb? Check the stock specs in the SP link above...

IXL _ ___ _____ _______ >>>> My Build & Ride Reports Are Here <<<<
2 Relax
FREE Organized Tech Info - Check Out The XLForum Sportsterpedia
__________________
### The ride is more enjoyable to nowhere in particular! ###
Reply With Quote
  #3  
Old 10th July 2018
intoanother intoanother is offline
Biker
 
Join Date: Jul 2018
Posts: 10
Sportster/Buell Model: 883 (with 1200 Kit)
Sportster/Buell Year: 2000
Reputation: 10
intoanother is an unknown quantity at this point
Default

It did backfire once or twice, so guess that was it.
Any sense in still using it ?

Hole isn't drilled out,
Mods - Jets 175/45 - Brass fuel inlet.
Reply With Quote
  #4  
Old 11th July 2018
IXL2Relax's Avatar
IXL2Relax IXL2Relax is offline
XL FORUM TEAM MEMBER
 
Join Date: Feb 2013
Location: Let Freedom Ring in PA
Posts: 5,571
Sportster/Buell Model: Sportster 883►1200
Sportster/Buell Year: 1994
IXL2Relax has disabled reputation
Default

Quote:
Originally Posted by intoanother View Post
It did backfire once or twice, so guess that was it.
Any sense in still using it ?

Hole isn't drilled out,
Mods - Jets 175/45 - Brass fuel inlet.
I would be suspicious of using it - The Diaphragm itself & the seal to the slide are probably compromised (charred/brittle/thinned?)...

BUT - You have it in hand - If you clean it up & it looks serviceable, you could try it (depends on how you feel about time & effort -vs- money to replace it)...

IXL _ ___ _____ _______ >>>> My Build & Ride Reports Are Here <<<<
2 Relax
FREE Organized Tech Info - Check Out The XLForum Sportsterpedia
Reply With Quote
  #5  
Old 11th July 2018
bustert's Avatar
bustert bustert is offline
XL FORUM TEAM MEMBER
 
Join Date: Jul 2008
Posts: 8,468
Sportster/Buell Model: 1200s
Sportster/Buell Year: 2001
Sportster/Buell Model #2: xlch
Sportster/Buell Year #2: 1974
Reputation: 1355214
bustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond repute
Default

50 bucks and it is a done deal
Reply With Quote
  #6  
Old 11th July 2018
Ireeman's Avatar
Ireeman Ireeman is offline
Asgardian
 
Join Date: Jul 2008
Location: Deck of Me boat
Posts: 7,744
Sportster/Buell Model: 883r
Sportster/Buell Year: 2003
Other Motorcycle Model: Watkins 27
Other Motorcycle Year: abov
Reputation: 5517349
Ireeman has a reputation beyond reputeIreeman has a reputation beyond reputeIreeman has a reputation beyond reputeIreeman has a reputation beyond reputeIreeman has a reputation beyond reputeIreeman has a reputation beyond reputeIreeman has a reputation beyond reputeIreeman has a reputation beyond reputeIreeman has a reputation beyond reputeIreeman has a reputation beyond reputeIreeman has a reputation beyond repute
Default

Its a goner..replace and inspect diaphragm seat before installing new.
__________________
Reply With Quote
  #7  
Old 12th July 2018
intoanother intoanother is offline
Biker
 
Join Date: Jul 2018
Posts: 10
Sportster/Buell Model: 883 (with 1200 Kit)
Sportster/Buell Year: 2000
Reputation: 10
intoanother is an unknown quantity at this point
Default

No sense in risking it again, will order a new a one.
I'm in Canada so had trouble trying to get a replacement that would arrive by the weekend so ended up ordering the Mikuni 42 Carb. Will rebuild the CV once I get the parts.
Reply With Quote
  #8  
Old 12th July 2018
rocketmangb's Avatar
rocketmangb rocketmangb is offline
XL FORUM TEAM MEMBER
 
Join Date: Jan 2008
Location: So Cal
Posts: 20,544
Sportster/Buell Model: XL1200C
Sportster/Buell Year: 2006
Sportster/Buell Model #2: XL1200C
Sportster/Buell Year #2: 2006
Other Motorcycle Model: 48 "Totalled" By a Douche
Other Motorcycle Year: 2012
Reputation: 2679679
rocketmangb has a reputation beyond reputerocketmangb has a reputation beyond reputerocketmangb has a reputation beyond reputerocketmangb has a reputation beyond reputerocketmangb has a reputation beyond reputerocketmangb has a reputation beyond reputerocketmangb has a reputation beyond reputerocketmangb has a reputation beyond reputerocketmangb has a reputation beyond reputerocketmangb has a reputation beyond reputerocketmangb has a reputation beyond repute
Default

You wont want that CV back !
__________________
Thy Sportster Come
It Shall Be Done
On Earth as it is on Salt
2006 Sportster XL1250C
Hammer Sledge Heads 1.98X1.61 Valves
Hammer 600 Cams
Big Ass CP/Hammer Pistons
Mikuni HSR 45 /Hammer Billet Manifold (Now HSR 48)
Jetted 27.5 slow,182.5 Main
97 Needle,Clip posistion 3
Hurricane Flow 3" offset AC,Rocketman Mod
Daytona Twin Tec TC88A,Rico Scarecrow Map
Sumax Thundervolt plug wires,NGK DCPR8EIX spark plugs. Gapped .040 and Indexed
Cycle Electric Stator and Regulator
Alto Carbonite Clutch
Royal Purple 20W50 MC Primary oil
Patriot Defender Pipe
Royal Purple 20W50 MC Engine Oil
Napa 7148 oil filter
Max Power, 111.47
Max Torque, 84.39
Best 1/4 Mile ET to date 11.85
Best 1/4 Speed to date 115.14
Build by Jester Motorwerkz West
Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



Sponsored Links
All times are GMT +1. The time now is 23:34.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC