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Bike stumbling like crazy!

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  #11  
Old 08-09-2014 | 09:02 PM
Jumpman's Avatar
Jumpman
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Originally Posted by MrCancilla
Well...I just found out something totally unexpected...even though I tested the wires, plugs & coil earlier...I just pulled the wire off the front spark plug and stated the bike...wouldn't you know it ran exactly as it does with the wire plugged in! I don't get it though...I have spark at that plug?

Swap the plugs.

See if the problem moves to the rear cylinder.
 
  #12  
Old 08-09-2014 | 09:07 PM
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I've had multiple sets of plugs in both cylinders...same results. I never checked the front injector as codes were showing rear injector. I just hope it's not the ECM!
 
  #13  
Old 08-09-2014 | 10:27 PM
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If front plug is fouling then it's getting fuel . plug can be firing when tested but be too weak to fire under compression. I would think maybe coil or plug wire.
 
  #14  
Old 08-10-2014 | 09:38 PM
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Originally Posted by cfer49
If front plug is fouling then it's getting fuel . plug can be firing when tested but be too weak to fire under compression. I would think maybe coil or plug wire.
I just pulled the front plug and it is no longer getting fouled after I changed it the last time. I poured some gas directly into the cylinder and it seemed to run good for a few seconds when I started her up.

The injectors resistance was fine and so is the signal going to it. Can it be still clogged? I put a half a can of Seafoam in and ran it for 10-15 minutes and nothing changed.

Is there anything else that would stop fuel from getting to it if the rear runs great?
 
  #15  
Old 08-11-2014 | 12:09 AM
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Yes an injector can plug. If the tank was empty when stored it may have rusted inside. Pull the injectors and look in the inlet side. Might be plugged up. Swap injectors and see if the problem switches cylinders.
 
  #16  
Old 08-11-2014 | 09:02 AM
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subscribed. Gotta hear how this story ends.
 
  #17  
Old 08-11-2014 | 11:26 AM
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Originally Posted by peddler
subscribed. Gotta hear how this story ends.
ME TOO!
 
  #18  
Old 08-11-2014 | 08:12 PM
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Ding, ding, ding.....we have a winner Johnny!

Clogged injector. Big piece of wading almost the size of a BB.

I switched injectors from front to back just in case, but it was pretty damn obvious that I found the cause.

I left the Fi2000 off and she runs like a beast!!!
 
  #19  
Old 08-12-2014 | 09:47 PM
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Hdforums did it again! Awesome, now go ride it like ya stole it
 
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