Carburator or ignition problem?
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Stage II
Joined: May 2008
Posts: 2
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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?
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.
Stellar HDF Member
Joined: Feb 2010
Posts: 3,394
Likes: 263
From: Southern California
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.
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.
Road Master
Joined: Feb 2007
Posts: 1,114
Likes: 28
From: Kokomo, IN
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.
Outstanding HDF Member
Joined: Oct 2010
Posts: 2,706
Likes: 14
From: Near Frankenmuth, MI
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.
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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