Question about Suzuki Gs 550 L Motorcycles

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82 suzuki bs 32 ss carb adjustment. bought bike, good compression, carbs cleaned, pilot screw settings were wrong, What do they do exactly? Screw is the one on piston side of carb. Is in LEAN OR RICH??? I get good idle bike falls on throttle movement open 1/8 to 1/4. I open screws and bike won't start warm. PLEASE does anyone really know exactly what they do and how to set them correctly? All books all say factory set by EPA. HELP

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  • Suzuki Master
  • 77,529 Answers

In is lean out is rich, but these are low speed adjustment and will not cause your symptom.

Posted on Jul 05, 2017

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Posted on Jan 02, 2017

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SOURCE: need help with setting up my dell'orto phbd 14 bs

first get the bike running, turn the idle adjustment up enough to keep it running. start with the air/fuel screw, 1 1/4 turn out. adjust the screw which ever way increases the idle 1/4 turn at a time, wait 10 seconds after every 1/4 turn to allow the engine speed to adjust. As the idle goes up you can use the idle screw to keep it in its normal range. at some point, the idle will start to come back down, this is when you want to start going the other way. idealy you want it set in the middle of the range of when it stopped increasing and when it started to decrease. If you are not able to reach this happy medium within the normal adjustment range, you will need to put the proper pilot jet in and start the process again. This should get you up and running, if it is a generic carb you may will have to adjust the jetting to get the bike performing its best after that, but thats another chapter.

Posted on Sep 25, 2009

Testimonial: "managed to get it running now as i now have a propper top head gasket ,lol still trying to find the propper idle setting ,lol tweek turn + hope , andz"

  • 248 Answers

SOURCE: 1986 YF 60 4-Zinger. carb settings

The air/fuel screws won't have any effect on the top end. That would be governed by the main jet. Did you install the Boyseen Reeds? If this is a new addition it could be the problem. Another thing could be the fuel level in the carburetor bowl. When you tore down the carb it is possible the float got out of adjustment. You could drop the bowl and see if the fuel level is correct. If not, bend the tab on the float to adjust it.

Posted on Oct 03, 2009

samtoler
  • 666 Answers

SOURCE: bought carbs for xj550 off ebay and think pilot

carbs has to be synced again, I reccomend by a pro, Its a tedious task

Posted on Jun 19, 2010

  • 3567 Answers

SOURCE: needle adjustments for 1999 Suzuki RM80 Need carb

Lightly seat the screws then open up each of them one and one half turns. This is the factory setting.

Posted on Aug 11, 2010

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I need to know the proper tuning of ucal mikuni carburetor with mixture adjusting screw on bottom of cabr (beneath float bowl), an idle adjust screw and pilot screw (hopefully pilot fuel screw since s


Why did you need to clean the carb? Routine servicing of the aircleaner would keep the carb clean for life. The pilot screw should be 1.5 turns out approx. with a small adjustment either way. Idle speed is set to a smooth low idle.If this doesn't fix it have you got something in the carb not replaced correctly? The float needle/float assy? How did you clean it? Have you introduced fluff/dirt into the carb and did you blow it clean with an airline?

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Bike sat 4 yrs wont stay running


Most likely the jets are 'gummed up'. I would first completely disassemble the carb and clean everything compressed air works well to clean out the tiny openings etc. Once you've cleaned everything and reassembled the carb, you would ideally want to have drained the gas tank and lines and replenish with fresh fuel.

Jul 15, 2014 | 2004 Suzuki DR 650 SE

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How do I adjust the pilot jet screws on a yamaha xv920 model 1982? How many turns should I turn open the pilot jet adjustment screw?


Carb work is for the pros. This may or may not be your trouble. Before you damage your very expensive carbs, take your bike to the pros. They have the special tools and expertise to set your carbs for maximum efficiency, safety and performance.

Nov 29, 2012 | Motorcycles

1 Answer

My name is justin i am 19 i have a 1991 yamaha fzr 600 and it kepps popping through first the first part of second my dad use to own a bike shop he said it was my piolit screws so he adjusted them it runs...


There isn't really a "correct" setting for the pilot screws. They're all set differently from the factory, based on the individual carb settings. You'll basically need to start at a baseline of 1.5-2 turns from seated (lightly seated) and work them in/out from there.

The first thing you should do before you go bothering to mess with settings, though, is clean your carbs thoroughly. Blow carb cleaner and compressed air through any of the passages in the carb body you can find, except the ones that lead up to the diaphragms, if you have CV carbs. You only need about 30 PSI if you can regulate your line pressure. Even a can of compressed air from Kmart will do, the stuff they use to blow out keyboards and such.

If you're really into time consuming stuff, you can buy a couple cans of compressed butane lighter fluid, and blow that through the pilot holes and such... you'll need a straw that fits on it, though. You'll be amazed what a good carb cleaning can do for a bike, as well as carb synchronizing. You can find specific directions for your fuzzer's carbs on just about any bike forum.

Aug 10, 2010 | 1992 Yamaha FZR 600

1 Answer

Need help with setting up my dell'orto phbd 14 bs carb for my mini crosser jus recently changed head for a 44mm big bore 3 port piston so need to reset my carb and dont know how to ? i,e idle screw and air...


first get the bike running, turn the idle adjustment up enough to keep it running. start with the air/fuel screw, 1 1/4 turn out. adjust the screw which ever way increases the idle 1/4 turn at a time, wait 10 seconds after every 1/4 turn to allow the engine speed to adjust. As the idle goes up you can use the idle screw to keep it in its normal range. at some point, the idle will start to come back down, this is when you want to start going the other way. idealy you want it set in the middle of the range of when it stopped increasing and when it started to decrease. If you are not able to reach this happy medium within the normal adjustment range, you will need to put the proper pilot jet in and start the process again. This should get you up and running, if it is a generic carb you may will have to adjust the jetting to get the bike performing its best after that, but thats another chapter.

Sep 25, 2009 | Factory bike Desert YR 250 Motorcycles

1 Answer

How to reset idle mix to factory settings on my 88 suzuki savage ls400


you don't! set pilot two turns out from fully in on carb pilot jet, start engine and set throttle adjuster screw on carb to fast tick over, adjust pilot to get even firing and readjust throttle screw to @1000rpm

Sep 11, 2009 | 1988 Suzuki LS 650 Savage

1 Answer

1977 750gs carb sync


carb sync is done using only the carb hard stop adjustment u don't touch the air fuel mixture screw, had this exact same bike had the serive manual am dead sure on this

Aug 04, 2009 | 1977 Suzuki GS 750

1 Answer

Cant get it running right


Invest in a FACTORY service manual. By the end of the first hour the manual has paid for itself. Don't get a Haynes or Clymer manual. Set the valve clearances and cam chain tensioner. Install new stock NGK spark plugs. Clean or replace the air filter.

I don't have a manual so I will assume the bike has carbs and not fuel injection.
Remove the water trap bowl at the bottom of the petcock, (gas valve). Is there any water or trash in the bowl? Drain a cup of gas from the tank. Is there any water or trash in the cup? Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ).

FOR EACH carb >
Drain the carburetor. There should be a screw on the lower side of the carb float bowl. Remove the screw then replace it after the fuel drains. After all carbs have been done, turn the gas back on and wait a minute for the carb to fill with gas. If the bike doesn't start and run properly then shut off the gas and remove the carburetors from the engine.

Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Remove the idle screw and the air screw on the outside throat of the
carb and spray into the screw holes as well.
< < READ CLOSELY > >
Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two adjusters down. Only screw these in until they LIGHTLY seat. Now turn each adjuster one and one half turns outward. Put the rest of the
carb back together and install the carb.

Also, sync the carbs such that the slides on all carbs begin to move at the same exact instant when the throttle is slowly turned. Let the float bowl fill then start the engine. This process should get you back on the road.


Please rate this solution. Thanks! Bebe!

Apr 29, 2009 | 1993 Suzuki GSX-R 600

1 Answer

Bike won't stay running


Drain the carburetors. There should be a screw on the lower side of each CARB float bowl. Remove the screw then replace it after the fuel drains. Remove the water trap bowl at the bottom of the petcock, (gas valve). Is there any water or trash in the bowl? Drain a cup of gas from the tank. Is there any water or trash in the cup? Dump it, clean it and re-mount it, (not all bikes have a water trap bowl). Install new stock NGK spark plugs.

Remove the CARBS from the bike.
FOR EACH CARB > Remove the float bowl and clean the entire
CARB with a spray CARB cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the CARB. Remove the idle screw and the air screw on the outside throat of the CARB and spray into the screw holes as well.
< < READ CLOSELY > >
Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two screws down. Only screw these in until they LIGHTLY seat. Now turn each screw one and one half turns outward. Put the rest of the
CARB back together, clean the air filter and install the CARB. Install an in-line fuel filter. Let the float bowl fill then start the engine.

BALANCE THE CARBS
Turn the throttle screw on the LEFT CARB one half turn inward. Now start the engine and get it warmed up. With the engine running, remove the RIGHT spark plug wire. Adjust the idle speed on the left CARB to the point where the engine just can't quite stay running and dies. Now put the loose spark plug wire back into place.

Now turn the throttle screw on the RIGHT CARB one half turn inward. Restart and rev the engine. Next, remove the LEFT spark plug wire. Adjust the idle speed on the right CARB to the point where the engine just can't quite stay running and dies. Now put the loose spark plug wire back into place.

SYNCHRONIZE THE CARBS
Remove the air filter and rubber fittings to allow you to see into the throat of both CARBS. You may need a mirror to see inside. You need to be able to see the slides go up and down when you twist the throttle. Now turn the fitting where the cable goes into each CARB such that there is just a bit of slack in the cable, 1/16" is plenty. Lock ONE of the cable adjusters down tight. All further adjustments will be made on the other CARB.

With the motor turned off twist the throttle very slowly while looking at the slides. Both slides need to begin lifting at the exact same moment. If the slides don't raise at the exact same time then slowly twist the throttle until the locked adjuster slide just barely starts to move. Hold the throttle still and turn the adjuster on the other CARB so that the slide on that CARB just barely starts to move also. Now recheck the slide movement timing. Do this process until the slides on both CARBS begin to raise at the EXACT same moment. Lock down the loose adjuster and re-check the slides.

Turn the idle screw on each CARB EXACTLY ONE HALF turn outward and restart the engine. The engine will be probably be idling very fast. Adjust both the idle screws equally from this point to get to the desired idle speed. Congratulations, you have just balanced and synchronized your CARBS This should fix the problem. One last and VERY IMPORTANT thing, Have a fire extinguisher handy and ready for use any time you work on or with he CARBS.

Please rate this solution. Thanks throttlejock!



Apr 22, 2009 | Suzuki GS 500 F Motorcycles

1 Answer

Bike will not idle


Remove and clean the carb. Reassemble then adjust the pilot screw. This screw is on the bottom outside of the carb centered L & R and forward of the main jet. The screw is nearly recessed in the carb. Turn the screw out 1/2 turn to richen the mixture if the cleaning alone doesn't do the trick. Also, move the clip on the jet needle down one notch for better low speed response. Reset the idle speed as needed.

Please rate this answer. Thanks dtpenn!

Apr 19, 2009 | 2005 Suzuki RM-Z 450

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