Question about Suzuki GSX 600 F (Katana Motorcycles

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My 1990 GSX600F was leaking fuel from its number one cylinder carb after installing a new float and carb kit(o-ring, gaskets, needle ect) and even a new fuel **** assembly, the bike now wont start unless you manually spray into the carbs a bit, and still kinda drips gas but not quite sure were from this time,any suggestion

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When you install a new float, it has to be adjust the float is going up too high and over filling. There is a guage you can use, but take the bowl off and bend the little flap down just a little right over the top of the needle valve and that will lessen the amount of fuel going into the bowl.

Posted on Sep 03, 2010


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When off gas is leaking

1. remove the hose from the carb and see if the petcock is shutting off the gas and if not clean, repair or replace the petcock.
2. look in the tank and see if it has rust in the tank even a small haze of rust as rust will cause the needle and seat to stick in the carb and make the gas leak. If the gas tank has a lot of rust it may need a tank rubber liner kit added or even a new tank to stop the leaking.
3. if the bike has been sitting for a while it may have trash in the fuel system(carb/petcock/tank). Rust or any trash can cause a leak. Properly clean out the carb and fuel system and add a new filter when done.
4. Improperly adjusted or bad needle/seat or float in the carb will cause continual leaking. Replace the needle/seat/float and adjust the new one when installed. Check your service manual for float adjustments.

Jul 22, 2012 | 2002 Honda CR 125 R

1 Answer

No fuel

It sounds like it used all the fuel in the carb bowl and then quit. So the bowl may not be refilling. There may be a clogged screen at the fuel inlet at the carb., or the needle valve just inside the carb. may be stuck closed and not letting fuel in. Or the float may be sticking on its pivot and keeping the needle valve closed. You may need a carburetor re-build kit. It will have a new needle valve and seat, new float, new gaskets, and just a few other parts that are changed when kit is installed- about $30 at a parts store for the minor re-build kit. Take the metal tag on top of the carb. with you to get the right kit for your carburetor. Good luck.

Jul 14, 2012 | Chevrolet Cars & Trucks

1 Answer

I have a 1981 yahama 850 midnight special. It has been sitting for 3 years. I tore apart the carbs and cleaned them. After putting everything back together the middle carb is leaking gas out of the two...

Is it poss to remove the float bowl while the carbs are fitted to the bike? I am fairly sure back in the eightys the float was addjustable, to controll the fuel level by bending slightly the metal tab on the float, when the bowl is removed check the level of fuel in the bowl and compare it to that in the others, the aim is to make the fuel flow stop at the correct level in the carb(by bending the float tab) while the bowl is off turn on the fuel push the float all the way up check if the fuel flow stops, also check the condition of the sealing washer around the float needle seating.

Jun 12, 2011 | 1981 Yamaha XJ 650

1 Answer

1990 Kawasaki ZXR 400 fuel coming out of carbs overflow pipes

Hi, Emma-shj and the usual suspects are:
1. Damaged or restricted fuel tank venting system.
2. Loose float bowl screws.
3. Damaged float bowl o-ring.
4. improper fuel level in the float bowl.
5. Worn or dirty inlet valve or seat.
6. Damaged or leaking float assembly.
7. Particle contamination in inlet fitting cavity.
8. Damaged petcock diaphragm allowing fuel to flow through the vacuum line into the combustion chamber.
9. Contaminated fuel tank.
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.
carbs pssing fuel out overflow pipe zxr 400 Biker ie Forums
Carbs leaking Here is how to fix it
Kawasaki ZXR400 Service Manual Supplement Free
Kawasaki ZXR400 ZX400 1989 1999 Repair Service Manual PDF Download Manuals... Complete manual $10 download
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Jun 08, 2017 | 1990 kawasaki ZXR 400

2 Answers

How do I get the float unstuck in the carberator of a 1976 Ford F100 truck?

An easy way is to remove the air cleaner off the carb, and give the top of the carb a couple sharp taps with a small hammer or a heavy screwdriver.. sometimes you can simply loosen the needle valve and float up this way.
You may need to take the top of the carb off. The float and needle valve work together to stop the flow of fuel into the carb. You want to check to see if the float is not full of fuel.. if it is , then it's got a leak and should be replaced... spray the needle valve and seat with carb cleaner spray to remove any build up.. And as long as the carb bowl is exposed, clean the basin out as well.

May 07, 2010 | 1981 Ford F 100

1 Answer

My Honda EM650 generator quits running after 15 to 20 minutes. Also the fuel vent line valve leaks while running.

'Vent is leaking while running': can be caused by varnish on the inlet needle/seat and debris in the float bowl.

Fuel Starvation - Float Bowl Carburetor
1) remove air filter assembly
*be cautious of tearing the mounting gasket. If it does tear, you HAVE to replace it. It is part of the priming system
2) remove the float bowl fastener. This is the main jet
3) carefully remove the float bowl, the rubber o-ring/gasket will not be able to be used if it is removed, you WILL have to replace it
4) using a spray 'carb cleaner'
spray up thru the center of the carburetor
spray and clean the main jet with cleaner and 'tag' wire
(tag wire is very thin, and can be used to clean the hole in the center of the main jet)
5) clean any debris from inside the bowl or carb body
6) re-install bowl and center bolt, air filter assembly

*if you need gaskets, your Briggs dealer can supply. The kit is cheaper than individual gaskets, and all the parts needed to finish the above repair are in the kit.

Nov 22, 2009 | Honda Electrical Supplies

1 Answer

Fuel leaking from carb vent tube on newly cleaned carburetor

that would be either the float set to high or the needle and seat is missing an o-ring while you had it apart. Should look at getting a carb kit there only approx. 23 bucks and it would save you a lot of grief in the long run.

Jul 26, 2009 | 1992 Honda CB 750 Nighthawk

3 Answers

Rebuilt carbs. flooding rear cylinder

well your deffinately flooding if it had no problems like this before the rebuild then i would say its the needle on the float not closing all the way try takinf the carb off and take the bowl off leaving the float on and hook up the feul line and push the float up if its leaking you have a bad needle. if its not leaking then your problem may be the spark to the cylinder

Jul 09, 2009 | 1988 Yamaha XV 535 Virago DX

1 Answer

I need to reset the float levels in my carbys to stop the overflow on my 1974 Z1A Kawasaki

You describe a problem with either the float or the float-needle and seat. If the needle is not seating then the gas flows past it. If the float has a pin-hole leak, then it will fill with gas and sink.
On some bikes you can remove the carb bowl without removing the carbs. If so, slide the hinge pin holding the float to one side and remove. The float will drop straight down. Catch the needle since it is now loose. Unscrew the needle seat with a socket.
Clean all metal parts in carburator not get carb cleaner on any rubber part. Shake the float and listen for gas inside or see if it floats in water.
Test the needle seal in the seat by blowing gently thru seat. Needle must seat completly with very little pressure holding the needle in the seat.
Re-assemble with new bowl gasket if damaged. A carb rebuild kit ($35) might be available for 1973 carb and contains all new parts instead of cleaning. Kit might even contain new float and float adjust guide.
Avoid adjusting float level if re-using the old float. If using new float, temporarily install old and measure distance to carb body. Install new and match this measuremnt. Bend tang to adjust.

Good luck,

May 05, 2009 | 1974 kawasaki Z1A

1 Answer

2nd cylinder not getting hot and leaking fuel from it

Assuming the carbs were rebuilt properly, this sounds to me like a carb float being stuck open. Turn off the gas and drain the offending carb. Next, turn the gas back on and sharply tap the float bowl with the plastic handle of a screwdriver as the fuel bowl refills. The goal here is to vibrate the float to free it up. If doing this process a couple of times does not free the float I would remove the carb and look at the float chamber fo any problems such as stuck float, float level not set correctly, and the correct installation of the main jet.
Use an air hose to dry out the cylinder then install a new spark plug AFTER you make sure that the cylinder is getting spark. Be sure to balance and sync the carbs when finished.
Please rate this solution.

Mar 17, 2009 | 1977 Suzuki GS 750

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