Help With Carb Adjustments

[RebelRouser]

Ok All;
My 1975 GL1000 And I Need Help
I Need An Exact Break Down On The Tuning Of My Carbs.... From Using The Vacume Sycronizer All The Way To Vacume Adjusting The Air Fuel Mixture.... Now Heres What I Have So Far
Number One Three And Four Have The Needle Bouncing All Over The Place And Number Two Is The Only Steady One But Number Two Is Producing Almost No Vacume Pull, No Leaks At The Carb To Plenum, Carb Its Self, Intake/Down Tube To Carb Or Head.... And Compression On The Bike Is 1 125, 2 127, 3 130, 4 132... Pounds.... So Before I Loose What Little Sanity I Have Left, Please Help Me To Figure This One Out....
By The Way... Bike Runs Good Has A Slight Mis Every Once In A While, Starts First Turn, Warms Up Quick And Is Very Responsive... Still A Little Rich Though...
Thanks In Advance....

[octane]

Number One Three And Four Have The Needle Bouncing All Over The Place And Number Two Is The Only Steady One But Number Two Is Producing Almost No Vacume Pull

...mmmmmmmmm

1) how are your 'vacuum-gauge-adapter' to 'manifold' connections doing ?
Are they air-tight ? Are the small o-rings in place ?

2) did you set the idle to 1000-1200 rpm ?

3) chokes opening fully ? all of them ?
Operating freely / don't bind ? / they all 'fall back' ?/
all the way ?


Sync:
..warm engine
..turn each pilot screw clockwise until it lightly seats,
and then back to specification (1975 model = 1 3/8 turns out)
...set idle to 1000-1200 rpm

Vacume Adjusting The Air Fuel Mixture

...not sure I quite understand what you mean ?

Bike Runs Good Has A Slight Mis Every Once In A While

...checked the air cutoff valve ?

In order to make the whole carb-thingie air tight
you might wonna' look at the torque spec's
at the bottom of this CHART

Before I Loose What Little Sanity I Have Left, Please Help Me To Figure This One Out

Hope this helps restore your sanity.
PS: if, at some point, you have any left over; can I have some of it? .-)
Octane

[Whiskerfish]

Biggest tip I can give is to balance 1 & 3 then 2 & 4 then balance the two banks to each other using the adjuster on # 4. It takes time especially the first time doing it. The adjustments will change each time you go to tighten the locknut. I think I spent the majority of a morning the first time while I figured out what was going on. Even now that I have done a few I can still spend an hour or two to get it just right. If you are using the vaccum gages most have little plastic dampner screws that you can turn in and out to minimize the bouncing of the needle. If your reading on # 2 is still low unscrew the gage and see if the bike is running poorly and improves when you block the hole in the intake with your finger. If so then I would suspect your gages/ tubing are faulty in some way??

WF

[RebelRouser]

Hey Octane;

1) how are your 'vacuum-gauge-adapter' to 'manifold' connections doing ?
Are they air-tight ? Are the small o-rings in place ?

2) did you set the idle to 1000-1200 rpm ?

3) chokes opening fully ? all of them ?
Operating freely / don't bind ? / they all 'fall back' ?/
all the way ?

1 Yes There Tight , Yes The Little O Rings Are In Place
2 Yes I dle Set Between 1000-1200 rpm's
3 Yes The Chokes Operate Smoothly Open To Close To Open All Four Carbs...

...not sure I quite understand what you mean ?

The Mixture Screws For Going From Rich To Lean On The Right Outside Corner Of The Carbs

...checked the air cutoff valve ?

Yes And It Works The Way It Is Supposed To, The Carbs Were Rebuilt By HD From The PO, It Just Ran Way Too Rich And Fouled The Plugs So I Decided To Check The Floats And Make Sure Of All The Adjustments My Self...

Hey Wiskerfish;

If you are using the vaccum gages most have little plastic dampner screws that you can turn in and out to minimize the bouncing of the needle.

Did Not Know That Was What They Were For, Now I Know To Use Them...

If your reading on # 2 is still low unscrew the gage and see if the bike is running poorly and improves when you block the hole in the intake with your finger.

Tried That And The Bike Dose Not Drop Or Raise When I Pull The Vacume From That Carb.... Put Finger Over Hole And Hear Sligt Vacume, Pull 1,3,4, And Loud Vacume And Rpms Drop Right Now...

[RebelRouser]

Now How Do I Post The Big Huge Smile On My Face. .... Job Done Responsive As Hell.... Much Much Faster..... Runs Great No Hesitations Or Missing.... Idles The Best It Ever Has, Gas Milage Improved A Hell Of A Lot.... Was Getting About 90 Miles To A Tank, Now Just Got 254 Before A Fill Up.... Starts First Turn And Runs Cooler Than Before... By The Way Enjoying Mid 70's Here And Not A Cloud In Sight... Got More Rubber To Lay Down... Bye For Now.... dragbike

[Whiskerfish]

[RebelRouser]

Just Got Back From Another Nice Ride.... The Tears in My Eyes Arn't From Joy Or Saddnes But From The Fact The Sunglasses Dont Stay On Right At Speed.... Difficult To Type Cause My Hands Won't Stop ShakingForm The Adrenilyn Coursing Through My Vains.... Oh Whst Fun It Is To Get Back On The Two Wheel Road.... Gots To Go... Just Stoped In Long Enough To Pick Up The Old Lady And Were Gone Again... Going To Go Up To Tahoe And Back.... Later.....

[ritalz]

Hey Rebel
check the guest post in Pit Stop

[RebelRouser]

Thank You Ritalz.... Deleted And Removed....

[octane]

Hi RR
Glad to see that you got it fixed!

So what exactly was the problem that caused your carb trouble ?

Octane

[RebelRouser]

Well The Pre Existing Carb Problem Was The Fuel Consumtion, And As For The Problems Last Night It Was The Fact I Did Not Have The Plastic Dampiners In Place Thats Why The Needles Were Bouncing All Over The Place... Bought My Guages Over 10 Years Ago And This Is The First Time I've Used Them On Four Carb Set Up... Just been Using Them On Single Carbs On Cars And Such, As For Number Two And No Vacume, It Wasn't Even Adjusted In Properly So No Reading Till About 1800 RPM's... But All Good Now... All Four Carbs Match And Like WF said Took About 1 1/2 Hours To Dial Them In... Get To The Last One And Have To Start Over Again... But All Done Now

[Whiskerfish]

Good deal!!

[QUEEENlE]

Good Job !!

Hugs
Q