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My vx 800 is flooding from the rear carb and blowing out exhaust. Should I just pull the carb and check float?

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  • 38 Answers

Your carbs will need to be cleaned adjusted and synced, but it also sounds like you need your valves adjusted.

Posted on Dec 04, 2012


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Posted on Jan 02, 2017

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SOURCE: virago cyl flooding xv700 1984

let me tell you how i check to see if the float and needle valve is working properley in a carb. take the carb off git a hand pump off a out board motor. hose and all take the ends off put the suction end in a can of gas and the outlit end to the gas inlit on the carb. squeez liteley on the bulb that should let you no if the carb is leaking some ware. if not then you no for sure that the problem is some were else.goodluck davidbaxley.

Posted on Apr 17, 2009

SOURCE: flooding out front cyl with fuel....rebuilt carbs

Theres a problem to the front carburator thus the flooding, the float pin is not sealing of the fuel supply once the bowl is full.You will have to reset the float, remove the bowl and operate the float manually( by your fingers lifting it to seal) letting the fuel to flow, if it stops thn for sure the float needs adjusting, if it doesnt stop the flow thn the pin is not sealing,you may have to replace the float pin.
Hope this helps!.

Knight (Yamaha seca XJ750R 1981)

Posted on Apr 17, 2009

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SOURCE: Carbies willn't set float level,right floods,left sets to low

I don't know if its any help but I've fixed my Honda with similar problem. It turns out I reassembled the rich carbys air cut off valve incorrectly. Have you checked yours? I'm wondering if the cut off valves somehow affect the other parts of the carbys. Mine is running sweet now.

Posted on Apr 24, 2009

ollie reece
  • 1167 Answers

SOURCE: 1994 UK GSX750F. Carbs professionally overhauled

yes buddy to rich will cause this because the plugs will start to foul if there is too much fuel in barrel in manual it will say how many turns the mixture screw has to be out2b4f40f.jpg

Posted on Sep 05, 2009

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SOURCE: Air box and crank case fuel flooding problem

Well there only one way the fuel can get into the crankcase and that's from the fuel tank. The petcock must be draining and the float needles are not stopping the fuel flow. Do you have a prime position on the petcock? If so do not run the bike in the position. Try topping the tank off with gas and letting it sit for a while and see is the gas has gone down and then check the crankcase and see if there's fuel in it again. i still say its got to be your petcock.

Posted on Sep 29, 2009

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99 Polaris 500 xc sp flooding, cleaned carbs and checked floats and main jets. reinstall carbs and run. next day fill gas tank approx. 12 gallons. next morning motor completely flooding gas tank lost

it sounds like it is still you needle and seats are worn or your float has a hole in it just check the float and see if it has fuel inside it ,but i say a new set of needle and seats and bowl gaskets cheers

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I have 2005 500 suzuki atv

Could be flooding. That usually only occurs when you have excess fuel lighting off in the exhaust. I have seen it happen on cars when the timing is way off. I would pull the carb and check the float level and replace the float valve.

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Have a murrry mower with 12 hp moter put a cut off on gas line some times runs ok then will start flooding if you cut gas line off start engin it will run a second or two then start blowing oil out an

If you have a float style carb I believe the float has become a "sinker". Pull the float bowl off the carb and set aside. pull the float pin and also set aside. carefully remove float and needle, set needle aside. Shake the float near your ear. If you hear sloshing in the float, replace it. No? check needle and seat for wear, or since you're into the carb this far replace them. This info is based on Tecumseh carbs, but B&S or Kohler should be similar. If there are any other questions don't be afraid to ask. There is no such thing as a stupid question.

Jan 29, 2013 | Briggs & Stratton Garden

1 Answer

Flooding Carburetors,

Sounds like the carbs are gummed up,and the floats are stuck. The carbs will have to come off,be thoroughly cleaned,and the float levels reset,and synchronized.

Aug 29, 2012 | 1991 Suzuki VX 800

1 Answer

Gas floods out of the exhaust manifold

Stuck float valve, letting too much fuel into the carb. Try taking the bowl off of the carb and checking to make sure that the float needle moves freely up and down. If there is evidence of gumming inside the bowl you will want to get some spray carb cleaner and clean everything in there thoroughly.

Mar 18, 2012 | Mtd Garden Tiller (Mtd)

1 Answer

I cleaned the carbs it ran great for 10 miles and then began flooding.replaced the gross jets in float bowles. ran good but had to pull of carbs again to fix float bowl leaking now it floods so badly it...

Sounds like you need to check the needle and seat for dirt etc. or one of your floats may be sticking. A simple way to check is to connect the fuel pipe to carbs upside down with float bowl off and you will see if it is leaking or not. If that is ok then make sure that the floats are not sticking or holed. Test again by inverting the carbs again with no fuel in them and you should not be able to blow into the chamber until you turn the carbs to normal position. Hope that helps.

Sep 24, 2011 | 1989 Yamaha YX 600 Radian

1 Answer

My lawnmower which is a TORO 6.5hp-Tecumseh engine won't start. When I pull the cord the valves start to move but on the second pull it seems to sieze up and blow some vapor out the exhaust.It ran fine...

It sounds like hydraulic lock. The carb is dumping to much fuel into cylnder. Pull the plug when it feels locked up and pull again, if it blows gas out of the plug hole you have carb problem. Maybe needle is ****, maybe float has a hole in it and is sinking causing flooding.

Oct 11, 2010 | Toro Garden

2 Answers

It does not fire all the time on rear cylender it take rear exhaust longer to heat up it dont get as hot as the front exhaust and it pop out back carb sometimes and exhaust fumes are gassy

This symptom could cover a WIDE range of problems. Lets start with simple stuff. Put new spark plugs in it. Pay attention to the ones that come out and where they came from ( is the front one white and the rear oil fouled?). Make sure your tank has nothing but fresh fuel in it. Then, check your ignition wiring for faults/ bad connections.
Hopefully that sovles your problem and you find something obvious. If not you need to methodically determine if its a ignition, fuel, or compression issue.

Dec 18, 2009 | 1990 Suzuki VX 800

1 Answer


check that the carb is clean and check that the float height is set to factory spec

Jun 06, 2009 | 1997 kawasaki VN 800 Vulcan Classic

1 Answer


If fuel is escaping through your exhaust system to the point that it is dripping it means you have a float in your carb that isn;t closing and your engine is flooding. If your mechanically inclined do a carb job. They sell kits with all of the gaskets floats needles and jets that you need, it's a moderately difficult job with lots of small parts but if you google your carb you can probably find either a you tube or similar video step by step. Otherwise it's a job for your local shop.

May 31, 2009 | 1991 Suzuki DR 800 S

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