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 > Frame Mount EVO Sportster Talk (1986-2003 models)
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Active Threads
0 XR750 road bike?
Last Post: Glamazon
Posted On: 6 Minutes Ago
Replies: 0
Views: 1
0 My cold weather attire.
Last Post: Glamazon
Posted On: 18 Minutes Ago
Replies: 4
Views: 92
0 Hello From Los Angeles
Last Post: harley506d
Posted On: 25 Minutes Ago
Replies: 2
Views: 15
0 Do people notice your bike?
Last Post: Knuckles
Posted On: 2 Hours Ago
Replies: 1,148
Views: 304,077
0 No working taillight, but bike still runs? Schematic included.
Last Post: juzyHD
Posted On: 2 Hours Ago
Replies: 4
Views: 81
0 Getting bike all wet!
Last Post: Knuckles
Posted On: 2 Hours Ago
Replies: 242
Views: 17,812
0 ....1
Last Post: toe
Posted On: 2 Hours Ago
Replies: 4,718
Views: 235,158
0 Big bore stroker - the beginning of a 10-year long build
Last Post: Ferrous Head
Posted On: 3 Hours Ago
Replies: 831
Views: 77,206
0 timing sympstoms
Last Post: cazz1000
Posted On: 3 Hours Ago
Replies: 10
Views: 210
0 Crusty's Travels
Last Post: moparnut72
Posted On: 4 Hours Ago
Replies: 1,744
Views: 190,893
0 Hyundai/Kia
Last Post: Tom Beckner
Posted On: 4 Hours Ago
Replies: 5
Views: 175
0 Sidestand lug
Last Post: Captain Johnny
Posted On: 4 Hours Ago
Replies: 6
Views: 148
0 Spokes and dual disc
Last Post: PetesPonies
Posted On: 5 Hours Ago
Replies: 33
Views: 988
0 Dale's Killer 40mm CV Carb
Last Post: cazz1000
Posted On: 5 Hours Ago
Replies: 13
Views: 356
0 1970 XLCH voltage
Last Post: Carboncore
Posted On: 5 Hours Ago
Replies: 54
Views: 2,179
0 Gravydog crashed again.
Last Post: Crusty
Posted On: 5 Hours Ago
Replies: 130
Views: 9,165
0 Hottie of the day, no nudity.
Last Post: trainman
Posted On: 6 Hours Ago
Replies: 9,120
Views: 749,433
0 How stock is your bike
Last Post: Lone Rider
Posted On: 7 Hours Ago
Replies: 145
Views: 29,856
0 Lowering, Geometry, and Physics
Last Post: koolbreeze
Posted On: 7 Hours Ago
Replies: 4
Views: 148
8 Crankshaft Failure
Last Post: wedge
Posted On: 7 Hours Ago
Replies: 105
Views: 43,873
0 Food porn
Last Post: Graywolf
Posted On: 7 Hours Ago
Replies: 977
Views: 138,800
0 What Sort Of Sporty Have You Got?
Last Post: Lone Rider
Posted On: 7 Hours Ago
Replies: 1,062
Views: 280,716
0 Ultima ignition
Last Post: Rigger10
Posted On: 7 Hours Ago
Replies: 4
Views: 115
0 Cheers from Germany
Last Post: Mr Snoid
Posted On: 7 Hours Ago
Replies: 26
Views: 420
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Graywolf
Posted On: 7 Hours Ago
Replies: 42,185
Views: 6,537,733
0 What did you do for your sporty Today?
Last Post: Lone Rider
Posted On: 8 Hours Ago
Replies: 5,581
Views: 650,363
5 popping in and out of first gear
Last Post: BlackBikeDave
Posted On: 8 Hours Ago
Replies: 158
Views: 62,982
0 Oil Pump Upgrade '86-'90
Last Post: Hippysmack
Posted On: 8 Hours Ago
Replies: 55
Views: 1,765
0 XR1200 Torquehammer exhaust failure.. again.
Last Post: Davo_137
Posted On: 8 Hours Ago
Replies: 27
Views: 846
0 Who's still riding???
Last Post: Mr Snoid
Posted On: 8 Hours Ago
Replies: 115
Views: 7,072
More...
Members Birthdays
Sponsored Links
Reply
 
Share Thread Tools Display Modes
  #1  
Old 1 Week Ago
RREAPER RREAPER is offline
Biker
 
Join Date: Aug 2018
Posts: 7
Sportster/Buell Model: Sportster XL1200C
Sportster/Buell Year: 2001
Reputation: 10
RREAPER is an unknown quantity at this point
Default Rear cylinder popping

So ran into a problem with the bike, just finished doing a little overhaul. So bike was a barn find and I got it running and rode for about a week no problem. Then yesterday I went to start it and pretty soon it started popping and spitting blue flames out the rear pipe. Thinking maybe it was too rich I let off the choke and it stalls. So I opened up the carb bowl to look at the jets and they are clean. Then I open up the throttle and to my surprise there's a slimely oil or gas looking varnish on the manifold side of the carb. So I take the carb off and see that it's all over the manifold too and even the valves too. Whole ignition system is brand new ultima module, coil with msd wire and new plugs. The breather bolts were also spitting up some oil into the k&n slip on air filter. Bikes sitting with rear rockers off right now, thinking maybe bad gaskets? Valve seals? Trying to figure out how to load the pictures, bikes a 01 1200 custom
Reply With Quote
  #2  
Old 1 Week Ago
RREAPER RREAPER is offline
Biker
 
Join Date: Aug 2018
Posts: 7
Sportster/Buell Model: Sportster XL1200C
Sportster/Buell Year: 2001
Reputation: 10
RREAPER is an unknown quantity at this point
Default

https://paste.pics/0d29d118eb196f60f6a07fbef1ef645d

https://paste.pics/862ceb16753d0af2b7a10f4acfd96f5d

https://paste.pics/7d219d3f042c636bda48bfe31b50d131
Reply With Quote
  #3  
Old 6 Days Ago
sportsterdoc's Avatar
sportsterdoc sportsterdoc is offline
Senior Master Custom Bike Builder
 
Join Date: Apr 2012
Location: Mojave Desert
Posts: 13,020
Sportster/Buell Model: 1200S
Sportster/Buell Year: 2002
Sportster/Buell Model #2: XLH883
Sportster/Buell Year #2: 2003
Reputation: 4777439
sportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond repute
Default

Could not get third photo to load
1. Is fuel fresh?
2. Is oil fresh?
3. Static timing on Ultima mid-range?
4. Stock exhaust?
5. Full compression?
6. Stock vacuum operated petcock? If so, is diaphragm intact?
Reply With Quote
  #4  
Old 6 Days Ago
RREAPER RREAPER is offline
Biker
 
Join Date: Aug 2018
Posts: 7
Sportster/Buell Model: Sportster XL1200C
Sportster/Buell Year: 2001
Reputation: 10
RREAPER is an unknown quantity at this point
Default

Fuel is new, oil is fairly new maybe 2 months. It was static timed and ran fine before this. Stock pipes and yes compression is good. Has manual petcock with the vacuum.
Reply With Quote
  #5  
Old 6 Days Ago
sportsterdoc's Avatar
sportsterdoc sportsterdoc is offline
Senior Master Custom Bike Builder
 
Join Date: Apr 2012
Location: Mojave Desert
Posts: 13,020
Sportster/Buell Model: 1200S
Sportster/Buell Year: 2002
Sportster/Buell Model #2: XLH883
Sportster/Buell Year #2: 2003
Reputation: 4777439
sportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond repute
Default

With a vacuum operated petcock, check the diaphragm for cracks or pinholes, which will draw fuel into the carb.
Reply With Quote
  #6  
Old 6 Days Ago
RREAPER RREAPER is offline
Biker
 
Join Date: Aug 2018
Posts: 7
Sportster/Buell Model: Sportster XL1200C
Sportster/Buell Year: 2001
Reputation: 10
RREAPER is an unknown quantity at this point
Default

Diaphragm looks good, nothing visible. Put a flashlight to it and no light poked through. It slides up and down smoothly. I took off the manifold and looks like it's in the chambers also, comes right off with carb cleaner, so I'm guessing it fuel related not oil? Why would oil be coming from the breathers though?
Reply With Quote
  #7  
Old 6 Days Ago
harley506d's Avatar
harley506d harley506d is offline
XL FORUM TEAM MEMBER
 
Join Date: May 2017
Location: Lubersac
Posts: 345
Sportster/Buell Model: 1200c
Sportster/Buell Year: 2005
Reputation: 337001
harley506d has a reputation beyond reputeharley506d has a reputation beyond reputeharley506d has a reputation beyond reputeharley506d has a reputation beyond reputeharley506d has a reputation beyond reputeharley506d has a reputation beyond reputeharley506d has a reputation beyond reputeharley506d has a reputation beyond reputeharley506d has a reputation beyond reputeharley506d has a reputation beyond reputeharley506d has a reputation beyond repute
Default

Oil from the breathers is a common complaint, especially if the oil tank is slightly overfilled, loads of info on here about it.
Best to route the breathers outside of the airbox.
__________________
"Procrastination is the thief of time"................90's Harley ad.
Reply With Quote
  #8  
Old 5 Days Ago
sportsterdoc's Avatar
sportsterdoc sportsterdoc is offline
Senior Master Custom Bike Builder
 
Join Date: Apr 2012
Location: Mojave Desert
Posts: 13,020
Sportster/Buell Model: 1200S
Sportster/Buell Year: 2002
Sportster/Buell Model #2: XLH883
Sportster/Buell Year #2: 2003
Reputation: 4777439
sportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond repute
Default

Quote:
Originally Posted by RREAPER View Post
Diaphragm looks good, nothing visible. Put a flashlight to it and no light poked through. It slides up and down smoothly. I took off the manifold and looks like it's in the chambers also, comes right off with carb cleaner, so I'm guessing it fuel related not oil? Why would oil be coming from the breathers though?
Not the CV40 carb slide diaphragm, the petcock diaphragm.
...not that it could not be a breather issue.
Reply With Quote
  #9  
Old 5 Days Ago
RREAPER RREAPER is offline
Biker
 
Join Date: Aug 2018
Posts: 7
Sportster/Buell Model: Sportster XL1200C
Sportster/Buell Year: 2001
Reputation: 10
RREAPER is an unknown quantity at this point
Default

Sorry just caught the typo in my original reply, it's a manual peacock, without the diaphragm. The vacuum is capped off.
Reply With Quote
Sponsored Links
  #10  
Old 5 Days Ago
sportsterdoc's Avatar
sportsterdoc sportsterdoc is offline
Senior Master Custom Bike Builder
 
Join Date: Apr 2012
Location: Mojave Desert
Posts: 13,020
Sportster/Buell Model: 1200S
Sportster/Buell Year: 2002
Sportster/Buell Model #2: XLH883
Sportster/Buell Year #2: 2003
Reputation: 4777439
sportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond repute
Default

Quote:
Originally Posted by RREAPER View Post
Sorry just caught the typo in my original reply, it's a manual peacock, without the diaphragm. The vacuum is capped off.
I wondered about the wording and should have asked for clarification.

Regarding harley506d's post: How full is the oil tank?

Both my 2003 and 2002 preferred the oil level to be mid-point on the dipstick...if not, it would "self-level", as my right pant leg could testify.
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 09:53.


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