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Anonymous Posted on Jun 11, 2014

How to repair fuel leaking from bottom of gas tank from fuel shut off valve?

4 Related Answers

sal_kh_sab

sal sabea

  • 98 Answers
  • Posted on Oct 15, 2009

SOURCE: Fuel leaks from around the valve at the 5 gal plastic fuel tank

you twist the whole valve after disconnecting the hose...
get a new one and put it instead...
if u have any further questions let me know:
[email protected]

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Anonymous

  • 142 Answers
  • Posted on Jun 20, 2010

SOURCE: Coleman 6250 PoweLeaking gas at bottom of motor housing. Can not

The gas is leaking from carb but in the motor not out.
You should check and repair the carb flow valve. The floating unit may be full and bent down.

Anonymous

  • 29 Answers
  • Posted on Dec 12, 2011

SOURCE: I need the rubber part

Easy mine cracked go to eReplacementParts.com pt#0062673 $6.05 plus s/h

Anonymous

  • 4 Answers
  • Posted on Oct 22, 2012

SOURCE: gas leak out or the carburetor

Thiis usually caused by a failure of either the float valve or the float itself.

Bad float needle valve: If some dirt or other particle gets stuck on the needle valve or seat, the valve will not be able to completely close and fuel will continue to flow into the bowl and eventually overflow. A new needle valve and seat are < $5.00 on-line.

Bad float: If the circular float gets a hole in it, fuel will get inside and the "float" will get heavy and no longer float on top of the fuel in the bowl. Because it doesn't float it will not rise high enough to push the needle up into the seat and keep extra fuel from entering the bowl. A new circular float is < $10 on-line.

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I have a 2003 model 300 Arctic Cat ATV 4x4 which is leaking gas.

turn off fuel valve if still leaks its between valve and the tank should be two lines from tank to valve or tank itself or even valve --if stops then leak from valve to carb ---either way need to remove valve knob and side flaring to access area
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I have drained the fuel tank on my bike to fix a leak in the fuel line. I have put fuel in the tank but bike won't start. Do I need to bleed air from the system and if so how? Thanks.

Is there a shut off valve at the bottom of your tank? Possibly you shut it off and just forgot to open it . When you drained your tank, did you rinse out the inside with gas, to make sure the screen at top of shut off valve was not clogged. Is the shut off valve clogged? If there was grime in your tank it could have gone past the shut off valve to carburetor, causing a clog. You may have to do some cleaning, take your time. GOOD LUCK FRIEND.
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Yamaha 1978 750 Special Fuel Leaking Problem

These type of fuel shut offs do not have a manual off position. They are automatically operated by engine vaccuum when working properly. They have malfunctioned and allowed fuel to overflow into the airfilter box(the black box) untill repair time use a long piece of hose to connect the large outlet of each shutoff to eachother or plug the end of two short pieces. The carbs have a drain screw on the very bottom of each facing left , right or straight down. you could also drain the carbs however once the fuel supply is cut to them they should not leak any further. Leave the carb fuel hoses from the tank disconnected. You should drain the tank by siphon and the residual gas that is already in the air box can be drained from the hose on the bottom of the box. This is a mess but once you get all this drained it should stop leaking
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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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Generator is leaking gasoline out through the carburator when not running. Also, fuel shutoff valve at bottom of gas tank will not shut off completely. What are probable causes and price to fix ??

Most often fuel leaking out the carb is caused by a needle and seat problem in the carburetor / the float level shaft screw may have come loose due to the vibration of the engine ,this will cause a leak issue with the needle and seat as well. To complete the repair the carb will have to be removed and cleaned. Replace the needle and seat if necessary an then replace the carb.
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My 1974 kawasaki ke 125 is leaking gas out the bottom of the engine. what is wrong with it?

Several things could be wrong. First, the fuel petcock (valve) at the bottom of the gas tank should be turned off when the bike is not being ridden. Also, it is possible the valve may not be fully shutting off the gas. This can allow the carb to overflow and leak gas. A stuck open or punctured float in the carb bowl can cause overflow. The float should be light as a feather and have nothing inside it but air. Is the carb securely mounted?

Check for cracked fuel hose or bad connections at the tank and carb. Is the fuel valve body leaking gas where it mounts to the tank? Heck, with the bike being 36 years old the tank may be leaking at a weld or due to rust through. I wish I could work on your bike. The older bikes are more fun to work on than the newer bikes. Post a reply and let me know what you find.
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Error code p0442

EVAP Emission Control System - Small Leak Detected (1.0 mm). This code can be set when 1. fuel filler cap is not completely tight, 2. when various hoses get punctured or the canister close valve does not seal completely, 3. there is an actual leak in the charcoal canister, fuel tank, or other EVAP system component, 4. if any one of these components are malfunction (a), fuel tank pressure sensor, (b) purge control solenoid valve, (c) canister close valve, or (d) fuel cap. An engine vacuum leak would not set this code.
Solution: Take the vehicle to a Hyundai Dealership for proper diagnosis/repair.
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Check engine light code PO442

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Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

With a P0442, the most common repair is to Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back. Otherwise, replace the gas cap, or Inspect the EVAP system for cuts/holes in tubes/hoses.

Good luck and hope this helps
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THe fuel shut off valve is also called the "petcock" it should be located on the side of the gas tank on the very bottom. I think it is on the right hand side. Look for the fuel line that goes to the fuel system and you should be able to trace it to the shut off valve. It should have 3 positions, ON / OFF / RESERVE
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