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Anthony Harris
Anthony Harris Posted on Dec 26, 2015
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I was riding my bike and came to a stop it shut down and started to leak gas out the air intake now it will not start. What do I need to check to fix this issue

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Claude Kayser

Claude Kayser

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  • GAS Master 9,098 Answers
  • Posted on Dec 26, 2015
Claude Kayser
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The floater is stuck 'open'

Fuel dumping out of carbs / overflow- 1998 gas flowing freely ...

www.cbrxx.com > ... > Engine / Airbox / Exhaust / Fuel Delivery

Sep 18, 2011 - 15 posts - ‎5 authors
It will start / idle - sort of, but dumps gas out of the overflow/ carbs. I. ... If the carbs are over flowing while the motor is shut down one might ... to the bowls with outremoval of the fuel tank and maybe the air box or a ... valve/ petcock diaphragm drain line you see leaking below the bike. ..... Motorcycle Forum ...

What is wrong with my carburetor? - Instructables

www.instructables.com/.../What-is-wrong-with-my-carburet...

InstructablesApr 24, 2012 - Shut off the fuel line, drain the fuel from the carb, disassemble and verify the correct ... Then I started to notice fuel coming out of the carb intake. ... the carb (blew air thru the fuel inlet), turn the carb over (float upside down) valve ... Carb still leaking gas at the intake connection, where the choke is located.

How to diagnose carburetor vacuum leaks on your motorcycle

? 4:41
https://www.youtube.com/watch?v=XzjSEYB9RDU
Feb 2, 2011 - Uploaded by mrmaxstorey
Not only did we have vacuum leaks, but the baffles were takenout of the engine, and the previous owner had removed the airfilter and ...

Carburetor / Carb Leaking Gas? How to Fix / Repair it ...

? 5:42
https://www.youtube.com/watch?v=gbfMEYG8NvM

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How to diagnose carburetor vacuum leaks on your motorcycle

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Carburetor Carb Leaking Gas How to Fix Repair it Motorcycle Honda DIY...

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Fuel dumping out of carbs overflow 1998 gas flowing...

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have 1998 BB carbie 38 000 miles on...

CBRXX com CBR 1100XX Super Blackbird Forum

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Honda CBR1100XX Super Blackbird community with forums reviews pictures and much more

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0helpful
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2008 yz450f wont idle, bogging like crazy, gas in air box
the is few possibilities with this issue but my first thoughts would be leaking intake valves or maybe one has stuck open or they might just be worn out allowing compression to blow back through carbie, My next thoughts would be are all the breather hoses on the carbie clear and free of blockage maybe one has melted from heat or got blocked from mud debree etc?

Check valve clearance or get leak down test done would be my first recommendations.

Cheers... Motoxpartsonline.com
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Dec 07, 2012 • Yamaha YZ 450 F Motorcycles
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4 wheeler backfire on start
incorrect air fuel mixture or a leak check for damage to the intake boot or airbox

i need to know more about how its running at low mid and high rpm to help you troubleshoot and you need to check for leaks especiely the intake boot if the intake boot is leaking that will need to be fixed before running the bike asumeing that is ok or fixed run the bike listen to it at idle standing is it surgeing with a good fast acceleration off the line with you siting on the quad ? or just realy rough ticking over with little guts off the line ?

midrange rideing how does it feel is there a bwarrr noise as u accelorate hard or does the engine roar up fast

is it reaching a good top end with good pulling power or poor pulling power

are the backfires constant or mainly whyle slowing down from high revs

if all are effected but there are no leaks then it may be float / fuel level that needs ajustment fuel level in ur float bowel effects all stages of rpm low mid and high

A rich problem gets worse as the engine heats up.



A lean problem gets better as the engine heats up.



hope this helps if u dont fix it your self first try and do them little rpm backfire tests for me itl tell me a lot
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Dec 05, 2012 • Yamaha Motorcycles
1helpful
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Gas leak from carburetor into bottom of air intake elbow. Filled empty gas tank and within seconds after opening the shutoff valve under tank, gas started to drip from bottom of intake elbow. Shut off the...
It sounds like the needle valve in the carburetor is not seating properly to shut off the fuel. A badly worn needle or dirt/debris in the needle seat area can cause this. Disassembly of the carb and a good cleaning will be required.
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Sep 04, 2011 • Garden
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My bike backfires bad but it idles perfect and the pipe gets real hot fast
Could be you have air leaks in the intake manifold connections causing a lean burn situation, which can cause loud noises from the exhaust, fireing back through the carb/injectors, and the pipe and engine to get extremely ho
with engine running, spray carb cleaner over and around the intake connections. If you hear the engine change tone or smooth out in it's running, you have found the leak. Fix the leak and the other problems could go away. If the bike has been setting for a length of time, your jets and passages could be gummed and needing a cleaning. If there is a possibility of gummed jets, pour 1/4 to 1/2 can of SeaFoam into the gas tank, lock down the front brake and rock the bike back and forth to mix the gas and SeaFoam. Start the bike and run at a high idle for a few minutes. Shut it down and let it cool, then do it again. If it is gummed or dirty jets, they should start to clean up shortly.
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Apr 14, 2011 • 1986 Suzuki LS 650 Savage
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Hi: My 2004 Harley will only run when leaving choke on, as soon as I push in choke the bike shuts down, also backfires when giving it gas when choke is still on, do you have any ideas what maybe causing...
sat up too long pull the carb bowl remove the jets clean and reinstall them pull your petcock off clean the screen put in good gas,and you should be set when you turn the gas on if the bowl vent leaks gas tap the carb bowl the float needle will find its seat and run
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Apr 21, 2010 • Harley Davidson Harley-Davidson Motorcycle...
0helpful
1answer

During a ride in the Nevada desert, my friend and I both experienced a situation where after parking our bikes, we tried to start them and they were flooded. In fact, they had gas squirting out of the air...
Sounds like you got something in the carbs that got into the float needle and keep it from shutting all the way to stop the fuel from filling the float bowls. And when this happens it has know where to go but up threw the main jet and into the intake and into the combustion chamber which would flood it. And also it would leak back from the carbs and into the air box.
The air cleaner needs to be clean so you wont get dirt into the carbs and also put a inline fuel filter on if the is not one already.
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Sep 28, 2009 • 2002 Yamaha Road Star Midnight
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Wr250f 2001.riding bike reved and stopped wont kik properly
if this is a two stroke,then if you have run it out of fuel,there is no lubrication for the piston and you may have damaged the piston or piston rings,check the compression,esay test is remove sprk plug pit your finger hard into the hole and crank the bike over,if your finger gets pushed off with loud crack sound then compression should be ok,but if it doesnt and the preesure is very weak then you will be looking at a top end rebuild,hope this helps
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Jun 24, 2009 • 2003 Yamaha WR 250 F
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My 04 rmz250 is overheating. It started smoking 3 different times when i took it out the other day. Id let it cool down for a few, continue riding and about 20 minutes later it would start smoking again....
Several things here. Do an oil change, 10w40 motor oil. Run premium gas and install a new NGK spark plug one heat range colder than stock. It sounds like you have an air leak causing a lean fuel mix. Check the carb mount bolts and the intake manifold bolts for tightness. Also set the valve clearances with a cold engine > .002 intake and .003 exhaust. Check for any cylinder head leaks. This would show up as oil on the cooling fins at the base of the cylinder head. Tighten the head bolts if needed.
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Apr 28, 2009 • 2004 Suzuki RM-Z 250
0helpful
1answer

1991 CR 500 (reving to high on idle high serges)
take some wd 40 & spray around the carb boot while running to see if the idle drops for a few seconds. sounds like you have an intake side air leak causing a lean condition making the motor rev high.
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Feb 16, 2009 • 2001 Honda CR 500 R
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2008 yz450f wont idle, bogging like crazy, gas in air box

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Hello I have a troy bilt tb685ec 4 cycle string trimmer and its A joke. There is no choke and no adjustment screw for the air/fuel to be tuned. The thing will fire up and run for about 3 mins and die. Then wait about 5 mins for it to start up again and do the samething. It also will bog down and die if I hold it wide open throttle. Which isn't really full it's only 3/4 throttle maybe from sound and feel. The filter,oil, and gas are new. The plug is fairly new about an hour run time on it. When I pull the plug its medium to light gray in color making me believe it's running lean. Can I throw a carb from another TB and make it run or is there possibly just a clogged passage is the carb? I removed and cleaned it out with carb cleaner with no change. I'm stumped and after reading reviews on this model I'm thinking the trash is the best place for this machine. Any insite on a possibe culprit would be much appreciated. Matt

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