demon carb help needed

nitrousED

New Member

Oct 14, 2003

88

0

0

Apr 25, 2004

#1

• Apr 25, 2004

• #1

Does anybody have a clue how i can get my 650 speed demon to lean out at idle.Im at 1 turn out on the idle screws,ive tried less but nothing changed.Ive had this carb for 2 years and never got it right yet,there has to be something to that can be done to keep my eyes from watering,thanks

331
stg 2 trickflow heads
xe 282hr cam
victor intake
650 speed demon(70prim-80sec , 6.5 power valve

 

W

wshI_hd_1

Founding Member

May 23, 2002

94

0

0

paulding, ga.

Apr 25, 2004

#2

• Apr 25, 2004

• #2

Change your jets. Go down aproxx 2 sizes at a time. Its warmer weather so time to drop them down anyway. I hope this helps.

 

W

wshI_hd_1

Founding Member

May 23, 2002

94

0

0

paulding, ga.

Apr 25, 2004

#3

• Apr 25, 2004

• #3

Change your jets. Go down aproxx 2 sizes at a time. Its warmer weather so time to drop them down anyway. I hope this helps.

 

S

SmockDoiley

New Member

Jun 14, 2003

1,591

2

0

San Diego, CA

Apr 26, 2004

#4

• Apr 26, 2004

• #4

His jets are going to have nothing to do with how the car idles. The main and secondary jets are different circuits from the idle circuit which controls fuel delivery at idle. If your problem really is too rich at idle, then a jet change wont help any.Try screwing the things in all the way, but other than that, I'm not sure. How does the car perform off idle.

 

S

SmockDoiley

New Member

Jun 14, 2003

1,591

2

0

San Diego, CA

Apr 26, 2004

#5

• Apr 26, 2004

• #5

Does the thing die when you screw them in all the way? If it doesnt then you have a problem.

 

nitrousED

New Member

Oct 14, 2003

88

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0

Apr 26, 2004

#6

• Apr 26, 2004

• #6

yeah, the prim have nothing to do with idle,i tried it for the hell of it anyway a while back.No problem at all with performance,no bog off idle,performance is good.I havent tried the screw all the way in test yet,somebody else said that.What could i check if this happens? Im gonna try to adjust the butterflys again and tighten idle screws in a little more to maybe a half turn.I cant keep smelling that odor,thanks

 

S

SmockDoiley

New Member

Jun 14, 2003

1,591

2

0

San Diego, CA

Apr 26, 2004

#7

• Apr 26, 2004

• #7

It could just be that the Demons are performance carbs and therefore not lean designed. Is it a vacuum or mech? Also I'm not sure if the power valve could be wrong. What kind of vacuum are you generating at idle. If you dont have the correct power valve for your combo it may be opening to easily and allowing gas in. Dont quote me on that though, lol. Call demon and ask them about your condition. Also if you dont have any smog equipment then your not going to clean up any of that excess gas.

 

nitrousED

New Member

Oct 14, 2003

88

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0

Apr 26, 2004

#8

• Apr 26, 2004

• #8

called bg again gonna try a few things,ill see what happens,thanks