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2004 ultra EFI lost rear cyclinder

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Old Apr 2, 2015 | 07:45 PM
  #1  
chdeuce's Avatar
chdeuce
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Default 2004 ultra EFI lost rear cyclinder

I lost the rear cylinder while riding and it dumps raw gas out the exhaust. I changed the coil, plugs and wires and I do have spark but still won't run and dumps gas out the exhaust. The front cylinder runs but has a lot of white smoke.
This did happen once before but it started again after a while. This time it won't.
Any ideas?
 
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Old Apr 4, 2015 | 12:08 AM
  #2  
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jekyllandglide
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Injector hung open? Short in the harness? Faulty computer? If it's not a spark problem it has to be a fueling problem it would seem. See if you can feel or hear the clicking of the injectors firing. If raw gas is coming out of the exhaust, that's some serious fuel being dumped in there. Just be careful...sounds like the thing could catch on fire....
 
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Old Apr 4, 2015 | 05:31 AM
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98hotrodfatboy
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A quick compression test would rule out most mechanical problems..
 
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Old Apr 4, 2015 | 09:08 AM
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I have seen this problem once on a 2002. ECM had failed and had to be replaced.
 
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Old Apr 13, 2015 | 04:00 AM
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Yes it was the ECM.
 
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Old Apr 13, 2015 | 08:16 AM
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Originally Posted by chdeuce
Yes it was the ECM.

Good, on the road again.
 
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