The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > SPORTSTER MOTORCYCLE FORUM > Sportster Motorcycle Era Specific and Model Specific > Ironhead Sportster Motorcycle Talk (1957-1985)
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Notices

Ironhead Sportster Motorcycle Talk (1957-1985) For all those that wanna talk about Ironhead Sportster Motorcycles

Active Threads
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Graywolf
Posted On: 4 Minutes Ago
Replies: 48,873
Views: 7,919,750
0 Cam question
Last Post: Tim The Grim
Posted On: 8 Minutes Ago
Replies: 32
Views: 732
0 Hottie of the day, no nudity.
Last Post: Stairman
Posted On: 26 Minutes Ago
Replies: 24,082
Views: 2,461,661
0 Flywheel en play check 1974 Sportster
Last Post: Jaime1840
Posted On: 46 Minutes Ago
Replies: 22
Views: 773
0 Installing valve stems 43157-83A
Last Post: LenC
Posted On: 56 Minutes Ago
Replies: 4
Views: 50
0 What did you do for your sporty Today?
Last Post: hammer6315
Posted On: 1 Hour Ago
Replies: 7,316
Views: 1,081,257
0 81 parts
Last Post: Nickb2787
Posted On: 1 Hour Ago
Replies: 0
Views: 20
0 ISO: Norcal Machine shop for Hole in Case
Last Post: BTD
Posted On: 1 Hour Ago
Replies: 15
Views: 761
0 Hot Chicks on Hot Bikes
Last Post: maltesefalcon
Posted On: 2 Hours Ago
Replies: 11,342
Views: 2,273,001
0 Secondery Vin tag
Last Post: ryder rick
Posted On: 2 Hours Ago
Replies: 3
Views: 125
0 Superlow bar dimensions?
Last Post: npaisnel
Posted On: 3 Hours Ago
Replies: 4
Views: 1,312
0 Please Help flanders says bars are almost what I have?
Last Post: npaisnel
Posted On: 3 Hours Ago
Replies: 16
Views: 2,624
3 Wtb, Wts, Wtt, Wtg (Evos)
Last Post: rocketmangb
Posted On: 3 Hours Ago
Replies: 19
Views: 82,769
0 Food porn
Last Post: Stairman
Posted On: 4 Hours Ago
Replies: 2,144
Views: 432,387
0 XR750 resurrecting
Last Post: mofosheee
Posted On: 5 Hours Ago
Replies: 28
Views: 1,510
0 Brake pedal clear Super Trapp 2-1?
Last Post: LenC
Posted On: 6 Hours Ago
Replies: 4
Views: 222
0 What kind of car lives with your HD?
Last Post: dodgetrucken
Posted On: 6 Hours Ago
Replies: 584
Views: 92,616
0 12/06/2020 Chicagoland Toys for Tots Parade
Last Post: jzink0883
Posted On: 6 Hours Ago
Replies: 0
Views: 35
0 Keep & Kill
Last Post: Crusty
Posted On: 6 Hours Ago
Replies: 18,750
Views: 1,116,194
0 Snippets
Last Post: oldboy
Posted On: 6 Hours Ago
Replies: 312
Views: 34,321
0 Bike Beast
Last Post: Ireeman
Posted On: 7 Hours Ago
Replies: 12
Views: 439
0 Old new guy
Last Post: Stairman
Posted On: 8 Hours Ago
Replies: 12
Views: 402
0 2009 XL1200N, want to install factory dual guages from 01, need help
Last Post: rocketmangb
Posted On: 10 Hours Ago
Replies: 31
Views: 1,175
0 What's your opinion on windshields?
Last Post: jzink0883
Posted On: 13 Hours Ago
Replies: 1,250
Views: 229,223
0 mainshaft retaining ring by sprocket
Last Post: ericfreeman
Posted On: 15 Hours Ago
Replies: 3
Views: 162
0 never mind
Last Post: IXL2Relax
Posted On: 16 Hours Ago
Replies: 198
Views: 28,387
0 strange noise in top end
Last Post: Ferrous Head
Posted On: 17 Hours Ago
Replies: 29
Views: 1,205
0 Oil leak
Last Post: Roane
Posted On: 17 Hours Ago
Replies: 52
Views: 2,847
0 Roadster Speedometer Light Sensor
Last Post: felis
Posted On: 18 Hours Ago
Replies: 2
Views: 88
0 BSA to be reborn...
Last Post: NLXL
Posted On: 18 Hours Ago
Replies: 14
Views: 665
More...
Members Birthdays
collinsb (76), bulldog1200C (62), DrBlond (57), Moonpie (55), mercybeat (50), mogwai (46), Ratster, E.MCCOLLOM (43)
Reply
 
Share Thread Tools Display Modes
  #11  
Old 3 Weeks Ago
Erikdowney18 Erikdowney18 is offline
Biker
 
Join Date: Apr 2020
Posts: 13
Sportster/Buell Model: XLH 1000
Sportster/Buell Year: 1973
Reputation: 5255
Erikdowney18 is just really niceErikdowney18 is just really niceErikdowney18 is just really niceErikdowney18 is just really niceErikdowney18 is just really niceErikdowney18 is just really niceErikdowney18 is just really niceErikdowney18 is just really niceErikdowney18 is just really niceErikdowney18 is just really niceErikdowney18 is just really nice
Default

Still no bueno, after taking the carb off and playing with the O-rings the bike will almost hold an idle and will just sit there and run like shit. I don’t know if it’s a vacuum issue or if maybe I burned a valve but it just can’t get going. I’m gonna see if I can grab a compression tester from work to test the barrels but somethings clearly not kosher. I’m thinking maybe change the points too? I know last time they went I had am extra set of contacts but no condenser so I only switched the contacts. Also gonna try throwing a set of rubber bands on the manifold too and see what that does. Any other areas I should circle back before I start thinking top end work?

Just figuring start stupid and get smarter
Reply With Quote
  #12  
Old 3 Weeks Ago
Ferrous Head's Avatar
Ferrous Head Ferrous Head is online now
Blind Owl
 
Join Date: Jun 2009
Location: Sunshine Coast
Posts: 5,951
Sportster/Buell Model: XLB, XLCH, Sporton
Sportster/Buell Year: 1962
Sportster/Buell Model #2: XLCH
Sportster/Buell Year #2: 1966
Other Motorcycle Model: XLCH (Another one)
Other Motorcycle Year: 1966
Reputation: 1385550
Ferrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond repute
Default

Quote:
I actually took some wire and ran it through all the jets
Don't do that. You will damage them. Compressed air is your friend.

Idle is controlled by a small hole partially blocked off by a tapered screw. The seat that screw goes into can be damaged simply by tightening that screw too much.
The passages inside the carb need to be clear. Given that you have a rusty tank there may well be small particles in the internal passages that feed the idle circuit.

When you just "crack" the throttle it uncovers another very small hole sitting just in front of the throttle disc. (On the venturi side of the carb) You see how small that hole is ?
The enrichner circuit also needs to be working correctly. It provides extra fuel for starting the engine but should shit off fully when released.

I have a new tool in my box that determines for me if the problem is in the carb or the ignition system so I do not have to guess at which area the problem is.

It's pretty expensive ($59 on Ebay) and a bit fiddly to use.

BUT - it does guarantee me that I'm looking at a carb problem and not an ignition system problem. Or even a compression problem.

Eliminates 2/3 rds of all problems immediately.
__________________
"I know only too well the evil that I propose. But my inclinations get the better of me."
Reply With Quote
  #13  
Old 3 Weeks Ago
Ferrous Head's Avatar
Ferrous Head Ferrous Head is online now
Blind Owl
 
Join Date: Jun 2009
Location: Sunshine Coast
Posts: 5,951
Sportster/Buell Model: XLB, XLCH, Sporton
Sportster/Buell Year: 1962
Sportster/Buell Model #2: XLCH
Sportster/Buell Year #2: 1966
Other Motorcycle Model: XLCH (Another one)
Other Motorcycle Year: 1966
Reputation: 1385550
Ferrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond repute
Default

OOOOPS !

Sorry, the price of that tool has dropped to $52.

I've used mine a couple times now and it works like a charm.

https://www.ebay.com/itm/New-Carbure...ampid%3APL_CLK
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



All times are GMT +1. The time now is 21:28.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC