Notices
Sportster Models 883, 883 Custom, 1200 Custom, 883L, 1200L, 1200S, 1200 Roadster, XR1200, and the Nightster.
Sponsored by:
Sponsored by:

misfire, backfire, stalling

 
  #1  
Old 12-19-2006, 01:08 AM
Ex11b
Ex11b is offline
New Member
Thread Starter
Join Date: Jun 2006
Posts: 83
Likes: 0
Received 0 Likes on 0 Posts
Default misfire, backfire, stalling

i posted this in the tech area, but not get any replies.

2003 883c 12500 miles since july 1 2006

oil changed (syn) every 3k-4k

my sporty recently decided to start misfiring, back firing, and then stalling.
it only happens with a hot engine, usually after 10-15 minutes of riding.
i ride 56 miles to work @70-90 mph, and the same home, everyday.
i think that the high rpm, heat for the sustained amount of time everyday may have effected the ignition module, or coil, or might be the bank angle sensor.
it happened this morning, and i pulled the plug, and it had no spark, i looked everything over, jiggled all the wires to plugs, coil, battery, and it decided to spark.
it fired back up, but this is happening everyday, and always with a warm/hot engine.
ive been watching closesly all the sppecifics when it happens, and it is usually even throttle, not coinciding with bumps.
the one constant is a hot engine.

the battery wires are secure, ground wire is secure.
 
  #2  
Old 12-19-2006, 11:10 AM
guitarman777
guitarman777 is offline
Road Captain
Join Date: Nov 2006
Location: Orlando, FL
Posts: 704
Likes: 0
Received 0 Likes on 0 Posts
Default RE: misfire, backfire, stalling

Been conferring with a buddy of mine, here's a few thoughts...

There's three basic elements that make an engine run, especially an engine as simplistic as an air-cooled motorcycle engine: fuel, spark, and air. I think you should examine each of those areas. Granted your problem is coming about when the engine is fully warmed up, but it probably wouldn't hurt to check all three systems.

Fuel: Fuel could be boiling if the line is too close to the exhaust. The line could be clogged or fouled. What condition is the cable in?

Spark:Are the spark plug cables old/worn? Are the spark plugs themselves fouled at all?

Air: Is your air cleaner in good shape? Filter clean?

Just some thoughts, hope this helps!
 
  #3  
Old 12-19-2006, 11:21 AM
mpaquette's Avatar
mpaquette
mpaquette is offline
Road Master
Join Date: May 2006
Location: Ypsilanti, MI
Posts: 882
Received 3 Likes on 3 Posts
Default RE: misfire, backfire, stalling

My 2006 XL1200C ran like this when I fouled the plugs.
 
  #4  
Old 12-19-2006, 11:32 AM
GermanyBert
GermanyBert is offline
One Of The Regulars
Join Date: Dec 2006
Location:
Posts: 113
Likes: 0
Received 0 Likes on 0 Posts
Default RE: misfire, backfire, stalling

Insure your battery cables are TIGHT. Do not just jiggle them.
 
  #5  
Old 12-19-2006, 12:01 PM
tatkin
tatkin is offline
Banned
Join Date: Nov 2006
Location:
Posts: 173
Likes: 0
Received 0 Likes on 0 Posts
Default RE: misfire, backfire, stalling

Goto radio shack, get a can of that electonics freezing spray.

Pop the plates off over the points.

When this event happens spary those electronic points.

If it starts there's your problem ...
 
  #6  
Old 12-19-2006, 12:13 PM
GermanyBert
GermanyBert is offline
One Of The Regulars
Join Date: Dec 2006
Location:
Posts: 113
Likes: 0
Received 0 Likes on 0 Posts
Default RE: misfire, backfire, stalling

It is a 2003....there are no points.
 
  #7  
Old 12-19-2006, 06:24 PM
tatkin
tatkin is offline
Banned
Join Date: Nov 2006
Location:
Posts: 173
Likes: 0
Received 0 Likes on 0 Posts
Default RE: misfire, backfire, stalling

You are feezing the electronics ...
 
  #8  
Old 12-19-2006, 06:34 PM
notorious's Avatar
notorious
notorious is offline
Road Captain
Join Date: Jun 2006
Location: nashvegas
Posts: 606
Likes: 0
Received 0 Likes on 0 Posts
Default RE: misfire, backfire, stalling

Sometimes the coil acts up simular to this.
 
  #9  
Old 12-19-2006, 10:36 PM
HD7585's Avatar
HD7585
HD7585 is offline
Outstanding HDF Member
Join Date: Nov 2006
Location: NJ
Posts: 3,269
Likes: 0
Received 3 Likes on 3 Posts
Default RE: misfire, backfire, stalling

Had a ign module drive me nuts once. Found out after 2 modules that the primary case was heating up due to lack of oil.The heat got the lower cases hot enough to crap out the module. Only happened at hwy speeds. let it cool down and it ran great. Don't know if this could apply to a sportster
 
  #10  
Old 12-20-2006, 12:16 AM
Wolhar
Wolhar is offline
Banned
Join Date: Jul 2005
Posts: 14,082
Likes: 0
Received 1 Like on 1 Post
Default RE: misfire, backfire, stalling

Could be ignition module, could be plugs, change plugs first. I'm betting on the electronics(module)
 

Thread Tools
Search this Thread
Quick Reply: misfire, backfire, stalling


Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: