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Carburator or ignition problem?

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Old Jun 12, 2011 | 09:52 PM
  #1  
sunwise's Avatar
sunwise
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Default Carburator or ignition problem?

I have 88 softtail with a 1990 CV carburator on it - after starting it up in the spring after storage, for it to run decently the enrichener device has to be half out all the time - replaced the coil and removed the float bowl, all jets look nice and clean, interior of carb looks clean -- any suggestions?
checked sensor in gear case and noticed some of the plastic resin melted off the back of the sensor - could more plastic resin be applied to back of sensor?
 

Last edited by sunwise; Jun 12, 2011 at 09:56 PM.
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Old Jun 12, 2011 | 11:50 PM
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Based on your description this is definitely NOT an electrical or Ignition problem.

You have a lean fuel mixture condition that is either being caused by a problem or misadjustment to the carburetor or you have an intake manifold vacuum leak. I would recommend that you first check for and if necessary repair any vacuum leaks, failing that I would suggest a carburetor overhaul and adjustment; by someone who has done this before.
 
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Old Jun 13, 2011 | 12:11 AM
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It's definitely a carb issue. Carb looking clean and being thoroughly clean are 2 different things. You need to disassemble the carb and clean all the passages and jets. Blow everything out with compressed air before reinstalling.
 
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Old Jun 13, 2011 | 07:17 AM
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Wow ... I've repeated this info so many times this morning. Seems many start tearing into the heart of their bike BEFORE eliminating the simple stuff.

BECAUSE you have removed and replaced the carb ... BEFORE you "tinker" with your carb and settings check for an intake leak. Remove air filter and use carb cleaner to spray the intake manifold behind the carb. Use the tiny tube to pinpoint the spray in the area of the intake. If the engine speed changes when spraying you have an intake leak. Replace seals and you could be back on the road in no time at all.

Start randomly adjusting the carb and you may have issues only a repair shop can straighten out.
 
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