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2001 FXDL will not idle until it's warm

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Old Nov 28, 2017 | 11:06 AM
  #11  
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Originally Posted by GatorNade
I recently bought a 2001 FXDL with 3,100 miles on it. It is my first bike with a carb. It seems to run fine with the enricher on for cold starts but I had a weird issue the other day where the bike would die at idle after a few minutes of riding. I had to rev it at stops just to prevent it from happening. I haven't had that same issue since.
Something that happens very often on low miles older bikes is the gas tank vent gets plugged from sitting around. You're able to ride for a while but then eventually the vacuum becomes too great and fuel starvation sets in. Easy to tell if this is happening, pull the gas cap after it stalls, if there is any suction than there is a vent issue.

My gf's first bike, a 2006 Rebel 250 w/ 3k miles had this same issue. I'd pull the gas cap off and it would fire right up again. After emptying the tank and investigating, it had nasty sludge in the bottom of it...blew it out with an air compressor and checked the vent line to make sure it wasn't clogged....problem solved.

Note: I have no idea what the tank vent system is like on a 2001 FXDL, speaking from experience with many other bikes.
 

Last edited by JoshFXDL; Nov 28, 2017 at 11:07 AM.
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Old Dec 3, 2017 | 06:17 PM
  #12  
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Originally Posted by VS Custom Cycles
ALL 2001 Carbureted FXDL's and others have a hose that goes from the tank vent opening to the top of the Petcock behind the toggle valve which acts as a vacuum to the petcocks diaphragm to deliver constant fuel delivery volume to the petcock and CV carbureted fuel line .
That doesn't make sense.

The vacuum line for the (terrible) factory petcock should come from the carb so a running engine opens the valve and a stopped engine closes it.

The tank vent line (under the console) should go to a hose with a check valve and then to air. I'm not familiar with the models equipped with charcoal canisters, but I'd expect another vacuum line going from it to the induction somewhere, creating a closed loop. Probably another vacuum valve in there somewhere, too.
 

Last edited by cggorman; Dec 3, 2017 at 06:19 PM.
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Old Dec 3, 2017 | 06:22 PM
  #13  
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Originally Posted by VS Custom Cycles
ALL 2001 Carbureted FXDL's and others have a hose that goes from the tank vent opening to the top of the Petcock behind the toggle valve which acts as a vacuum to the petcocks diaphragm to deliver constant fuel delivery volume to the petcock and CV carbureted fuel line .

Well hell; talk about outing yourself as a bullshit artist. Well done... not...
 
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Old Dec 3, 2017 | 08:05 PM
  #14  
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Like this one shows?
 
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Old Dec 3, 2017 | 08:08 PM
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Old Dec 3, 2017 | 08:14 PM
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There is also a little diaphragm in the fuel valve. If it has a small hole in it, it will drive you crazy because the vacuum can't hold the valve open enough.
 
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Old Dec 3, 2017 | 08:34 PM
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After looking at that diagram, I looked at my bike. Then I looked at the diagram again and thought WTF... None of these hoses are on my bike.. The I saw at the bottom of the page California.. And there's the problem! Don't use that book..
 
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Old Dec 3, 2017 | 08:46 PM
  #18  
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My wide glide was not a California model either. Neither was my son's sportster. They both had them. The difference in the picture of the Cali bikes is the canister. Mind did not have that.


edit. There are many bikes that have been converted to a regular pingle petcock fuel valve. These no longer require vacuum to open the valve.
 

Last edited by MJ; Dec 3, 2017 at 08:56 PM.
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Old Dec 3, 2017 | 09:07 PM
  #19  
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😂 you don’t have the vacuum petcock?
 
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Old Dec 3, 2017 | 09:16 PM
  #20  
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Originally Posted by MJ
My wide glide was not a California model either. Neither was my son's sportster. They both had them. The difference in the picture of the Cali bikes is the canister. Mind did not have that.


edit. There are many bikes that have been converted to a regular pingle petcock fuel valve. These no longer require vacuum to open the valve.
LOL! My 99 was a California bike. The original owner stripped off all that crap. He put on the Pingel and Mikuni. Good thing they don't test. I took off the vent hose and check valve. It's just a big hole in the top of the tank now. Don't tip it over!
 
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