Sportster Models 883, 883 Custom, 1200 Custom, 883L, 1200L, 1200S, 1200 Roadster, XR1200, and the Nightster.
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Fouling Plugs

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  #11  
Old 03-04-2007 | 08:06 PM
StreetGlide2006's Avatar
StreetGlide2006
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Joined: Oct 2006
Posts: 1,650
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From: North West Ohio
Default RE: Fouling Plugs

ORIGINAL: cHarley

I agree with the above posts. I doubt your use of the enrichener is the problem. The stock jets on a 1200 are typically 45 low & 180 high. A stage 1 rejet usually takes the jets to 48 low & 190 or 195 high. Either verify your jet size or have the A/F mixture analyzed or dyno the scoot. Don't bank of the fact that the previous owners hubby did it right. Also if you live at a higher altitude >3000 ft the jet size may need to be reduced some. You might also try removing the A/C and look into the carb throat and verify that the enrichiner butterfly is open fully when the enrichener **** is pushed in.
cHarley, I removed the AC on the wifes bike. When looking inside I see the vacuum piston, if I raise that by hand I then see the throttle butterfly. According to the manual the enrichner is a spring loaded valve. Am I missing something? I see nothing move when I pull the enrichner out. The drawing does not show an enrichner butterfly. But it also does not show the throttle butterfly. Is there a way to tell if the enrichner valve is seated all the way.

This is starting to look like a job for the shop.

I do appreciate all the help though.

Ride Safe,

Mike
 
  #12  
Old 03-04-2007 | 08:31 PM
drum412's Avatar
drum412
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Joined: Jul 2006
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Default RE: Fouling Plugs

StreetGlide2006, The enrichener/choke is not visible on the carb, and it's a plunger type valve, not a butterfly. Basically follow yoru choke cable to the carb. There'll be a plastic nut holding it into the carb, take that nut off, and you can take the choke cable out with the choke plunger attatched. And at the front of the plunger theres an oring seal, this can rot away, and require replacement, it's an easy thing to check.
 
  #13  
Old 03-04-2007 | 08:55 PM
StreetGlide2006's Avatar
StreetGlide2006
Road Warrior
Joined: Oct 2006
Posts: 1,650
Likes: 0
From: North West Ohio
Default RE: Fouling Plugs

Drum412, Thanks! That was what it looked like to me but I needed some reassurance. I have the manual and have been looking for just that information. I will take a look and see what I can find.

Thanks again for all the help.

Ride Safe,

Mike
 
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