2003 sportster coughs and backfires
26 Jun, 2015
74%Solved this issue
92minTime to fix
70%Recommend to DIY
Need a faster answer?
Hi Anonymous, popping, coughing, spitting, or backfiring through the carburator or induction module can be caused by air getting sucked in combustion chamber do bad intake seals leaking. Leaking exhaust gaskets can also be suspect. Remove air cleaner and backing plate, while engine is idling spray WD-40 or Brake Kleen around intake manifold to head area, if RPM's increase you have an intake leak and seals need to be replaced, also spark plugs will be burning whiter than normal. Good luck and have nice day.
SHARE YOUR EXPERIENCE
Were you able to resolve it?Yes NoAwesome !Ok
How long did it take to fix?Good to know
Is it better to DIY or Repair?DIY RepairGreatGot it
Instant Repair Help
over the Phone or Video
Get Instant Help
Save hundreds of $$$