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Need to balance carburetors using carbtune pro

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Posted on Jan 02, 2017

luckyluke78
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SOURCE: Difficulty balancing carbs ,am using

It is possible that you may have low compression on that cylinder so it could be a shim problem or piston/rings....another possibility is that the butterfy on that carb is open too much. Check the compression first.

Posted on Jul 04, 2011

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How to Synchronize Motorcycle Carburettors?


Hi, Carolyn for more information about your question and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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My CBR 1100 XX is not idling but gives instant reaction on throttle with an initial spluttering and it revs very strong but it's not holding idle and the choke makes no difference and the manual idle


Hi, Anonymous and the usual suspects are:
1. Idle speed improperly adjusted.
2. Air fuel mixture screws not properly adjusted.
3. Inlet system air leak.
4. Leaking accelerator pump.
5. Loose low-speed jet.
6. Plugged low-speed jet.
7. Contaminated or plugged low-speed circuit.
8. Enrichner valve/choke not seated or leaking.
9. Multi carburetors out of sync and need to be balanced.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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May 13, 2017 | 2002 Honda CBR 1100 XX Super blackbird

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Synchronize carburetors on 1999 Honda 1100 Shadow


Hi, Anonymous for this scenario you will need your service, parts fiche, and owners manual if you can't find the best tool you ever bought for your Honda, despair not, for a mere zero $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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1 Answer

Messed Up with the carburrator


wind in both screws all the way then out 1 turn. This should be enough to start the bike, remember to use the choke if its cold. When its running you can adjust the air screw to get the fastest revs you can. The idle screw only affects it when its at tickover, adjust to get ideal tickover revs after all other adjustments. But it really needs to be set up with instruments, like a carbtune.

Dec 11, 2013 | 2006 Hero Honda Passion Plus

1 Answer

How do i sync carbs on 1998 cbr fireblade


Hi, John for this scenario you will need your service/owners manual if you can't find the best tool you ever bought for your Honda, despair not, for a mere zero $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
How to balance sync your carbs in five minutes Honda CBR600 Carbtune
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Aug 01, 2012 | 1998 Honda CBR 900 RR Fireblade

1 Answer

Difficulty balancing carbs ,am using carbtune but one carb has very low vacum reading.Fazer 600fzs model.Seals ok on inlet/outlet side of carbs,Possible causes and cures.Thanks


It is possible that you may have low compression on that cylinder so it could be a shim problem or piston/rings....another possibility is that the butterfy on that carb is open too much. Check the compression first.

Jul 03, 2011 | Yamaha FZS 600 Fazer Motorcycles

1 Answer

My honda cbr 600 wont start and keeps backfireing


Check your plugs. If all four are sparking then your carbs are out of sync. They will need to be re-balanced.

If you are capabable in doing this job your self, you will need a screwdriver that fits your adjuster screws and a CarbTune Carb balancer.
Remove your tank and airbox.
You should see the flaps inside your carbs. These should open when you move your throttle.
Start on the outside carbs to get them balanced with the 2 centre ones.
To start, unscrew the adjusters all the way out. then screw them in until the 2 outer carbs move at the same time as the inner 2 carbs
Once this is done then adjust the centre balancer to syncronise the 2 left hand carbs to the 2 right hand carbs.
Now if you have done this correctly, all four carbs should open at the exact same time.
If you have a Carbtune balancer, remove the plugs from the top of your inlet manifold and plug in the hoses from the carbtune balancer.
Start the engine and adjust the screws until the weights inside the Carbtune balancer all read the same.
Once done, remove the balancer, replace the plugs into the inlet manifold, refit the airbox and tank and it should run so much better.

If your not 100% confident to unertake this job yourself, take the bike to your local dealer and ask to have the carbs balanced.

Mar 15, 2010 | 1991 Honda CBR 600 F(2)M

1 Answer

How and what order do i sync my katana carbs


To sync your carbs there are various suppliers for the sync sticks. Norgan Carbtune from the UK or Motion Pro are two that come to mind. Both can supply carb syncro sticks. I would suggest getting a manual or checking your library for the specific syncroed level.

Aug 17, 2009 | 2003 Suzuki GSX 600 F (Katana)

2 Answers

Excessive carbon on spark plugs


Several things come to mind on this. First, rejetting should be done by someone that can do all of the fine tuning also. If the idle mixture screw on the carburetors are still covered, you need to expose them for adjusting. Pull one spark plug and look at the color of the electrode. Black is too rich (too much gas) and white is too lean. You want a lighter brown. Put the plug back in and start the bike. On each cylinder, adjust that idle mixture screw all the way in, being gentle, to the stop. DO NOT OVER TORQUE, YOU JUST WANT TO REACH BOTTOM. Make note of the screw driver orientation and back the screw out 2 turns. This is the starting point. If the bike will no longer idle, adjust the idle screw for about 1000 rpm's. After running the engine for a couple of minutes at idle, do not rev the engine, just shut it off. Pull a spark plug and check the color. Again, you are looking for a light brown. If it is black, turn that carbs mixture screw in 1/2 turn, white, turn out 1/2 turn. Do this for each carb. I know, this is not the quickest way, but it is a sure way of getting the right mixture. It will be time consuming and you might even burn your fingers on the hot plugs.
Now that you have the right mixture, it is time to balance the carbs. I use a Carbtune monometer. Google Carbtune. This is a must to get the bike to run strong and smooth. You will need a service manual for this procedure. Go to Delphi Forums and look up the RSV, Royal Star Venture forum and you will find an electronic version of the service manual there, for free. Hope this helps.
btw, there is not anything around the spark plugs to adjust.

Mar 23, 2009 | 2008 Yamaha Royal Star Venture

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