Question about 2002 Suzuki VL 800 Volusia

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I debaffled my suzuki VL800 and now the air/fuel mix is off. How do I adjust the carb?

Bike has back fired but it also sounds like its coming from the air box.

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  • Master
  • 302 Answers

Get a carb sync kit and follow the directions included dont b5 suprised whn6 u fin6d out all is well in the mix

Posted on Feb 13, 2012

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 3567 Answers

SOURCE: 1985 Suzuki GS700 - pull and clean carbs

Synchronizing and balancing the carbs will be a nightmare. I would make a diagram of what hoses attach where and mark each hose. If you remove any adjusting screws or jets, write down the number of turns it takes for removal and than put each one back the same number of turns. Before removing the carbs, drain them (assuming there is anything in them). Now get a spray can of Berrymans carb cleaner (or another brand), and fill the float bowls full of cleaner by disconnecting the fuel lines and spraying into each fuel line until the level in the line is reaching the top of the float bowl. Now wait for a couple of days while the cleaner softens the dried varnish residue in the carbs. Now remove the carbs as a set then dis-assemble and clean with a couple more cans of cleaner. 6807ee4.gif Getting the pilot jets cleaned out is the big trick. If it will not idle, the pilot jet is problem.

Below is a diagram of your carb. The same diagram with the entire carb assembly AND your entire bike can be found at Babbitt's.
Go to the site below where you can see a parts diagram for your specific bike. You will select the actual brand, year, model, etc., once you go to the site. Part numbers and prices are also shown. You can order parts from this site. In the event no price is shown on a particular part, the part is not in stock. www.babbittsonline.com/pages/parts/viewbybrandand/parts.aspx

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Posted on Jun 28, 2009

  • 3567 Answers

SOURCE: 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!



Posted on Apr 22, 2009

emissionwiz
  • 75117 Answers

SOURCE: 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

Posted on Aug 04, 2009

  • 3567 Answers

SOURCE: 1999 suzuki 500 4 wheeler.air screw on carb?

The air screw and throttle screw are NEVER supposed to be tightened up at all. Doing this can damage the seat. Only screw the air screw and throttle screw in until they LIGHTLY seat. Now turn each adjuster one and one half turns outward. Chances are you will need to replace the adjuster screws to get the bike to idle properly. Yeah, the ends look okay but that little ring indentation where the screw was tightened down matters a lot. If re-setting the screws fixes the problem you should consider yourself lucky.

Posted on Sep 01, 2009

  • 108 Answers

SOURCE: how do u adjust the clutch on my suzuki vl800 its

There should be a finger adjustment screw, where the clutch cable meets the clutch lever. turn it outwards one turn at a time ,if more than five turns or reach end of thread ,your clutch will need replacing.

Posted on Feb 14, 2010

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2 Answers

Suzuki vs800. replaced stater rectifier,now bike only runs with choke out or w throttle.dies wo choke n when throttle is not given. Three yellow wires mixed up from rectifier,Dirty carb? Bad choke?


Hi, Bill and the usual suspects are:
1. Fuel cap or fuel tank is not venting properly.
2. Fuel filter clogged.
3. Fuel line pinched or kinked.
4. Float needle and seat sticking.
5. Float level too low.
6. Carburetor bowl vent line clogged/blocked/pinched.
7. Idle adjusting screw set too low.
8. Air/fuel mixture screw set too lean.
9. Idle port, transfer ports, slow air jet clogged.
10. Slow fuel jet clogged.
11. Faulty fuel pump.
For more information about your issue and valuable "Free" downloads that you will need please Click on blue links below. Good luck and have a wonderful day.
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1 Answer

Backfires


to much air when mixing with fuel in carb find air mixtur screw on carb an whale running turn in slowley till it stops backfiring turning the screw in adjusts the air mixing with fuel the screw is useuly located on the side of the carb witch the toub hooked up to put fuel in carb is
or you could re set it by screwing all the way in then screwing out 3 whole turns then whale running turn out til it back fires then turn screw in haf to three quarters of a turn in hope this helps

Nov 27, 2012 | Motorcycles

1 Answer

2000 suzuki rm 80 new piston rings top end kit bike wont run rite starts sometimes but only runs for a minuite or so then bogs out and wont start again .


What this sounds like is a carb issue. There are screws that are located on the carb that control the air and fuel mixture, if you are getting to much air then it will crank and run only for a minute or two then shut off. Have you tried adjusting it? It can take some time to get it right as each bike engine is going to be slightly different and all adjustments are going to be bike/engine specific. I would recommend adjusting the air and fuel mixture, that will probably work for ya. Hope that this helped.

Jan 21, 2011 | 2003 Suzuki RM 125

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Just rebuilt carbs, the bike starts but i have to hold my hand a little over the top of the air box,seal around carbs and air box seem tight what could it be? the bike says on top of the back fender no...


First is your choke open or closed when you startthe bike.Try adjusting your carb a/f mix as you are running rich (high fuel mix ratio). Good enough?

Apr 25, 2010 | 1992 Suzuki GS 500 E

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

2 Answers

Where is the fuil mixter screw located on a suzuki 800 intruder


Which one?
Here are links to fuel system and servicing for the VL800.
http://www.ioci.it/archivio%20tecnico/VL800/VL800_Fuel_Lubrification%201%C2%B0%20parte_134-150.pdf
http://www.ioci.it/archivio%20tecnico/VL800/VL800_Informazione%20tecniche_264-298.pdf

Jun 29, 2009 | 2004 Suzuki VL 800 Volusia

2 Answers

BACK FIRING


Hi and welcome to FixYa,

On most bikes, your described problem indicates too lean a mixture. The air/fuel mix would have to be adjusted by reducing the air through the air adjustment screws. Additionally, you may want to check for any air leak on the air filter, air box and the bottom half of the airbox that is seated to the barbs.

Good luck and Thank you for using FixYa. Happy Holidays.

Dec 23, 2008 | 2003 Suzuki TL 1000 R

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