Why is my fuel petcock leaking?
At worst, fuel fills the cylinder, eliminates compression and prevents the piston from moving. Once the petcock is “off” you’ll notice gas leaking out of the face of the petcock. That’s when you know it’s the petcock and not anything else associated with the fuel system.
Where is the fuel shut off valve on a Honda?
Click to expand… the vacume operated petcocks have a rubber diapham that engine vacume pulls to one side of the chamber allowing fuel to flow. The diapham can go bad and leak even with the petcock in off. There should be an OEM repair package for it. In the order of repairing/replacing things that should come first. It does have a fuel pump.
What to do if your Honda drain tube is leaking fuel?
The float can be filled with fuel or the float valve might be leakin if you take it apart again push the float up and blow into the gas inlet see if it leaks. If not make sure your float dont have a leak.
What does it mean when your gas valve is leaking?
There are two possible answers to your leaking gas valve question. First lets explain the petcock. Petcocks are commonly and interchangeably referred to as fuel valve, gas valve, gas cock or petcock. A mechanical petcock is attached to the fuel tank and has one outgoing fuel line. It is simply an on off valve.
When to shut off fuel in Honda Shadow?
Even if that is the case, the float and needle valve in the carb should shut the fuel off when the bowl gets full. If it doesn’t, the carb needs work; what the petcock is or is not doing has no bearing on that. The petcock is working properly. I had it to “off” overnight, and I still had a hard time starting it today.
What should I do if my fuel valve is leaking?
The o-ring probably needs to be rehydrated. First, if you have a vacuum type valve you need to plug the vacuum port. Take a small piece of vacuum line and push it on to the port. Next, epoxy a bolt into the other end of the line. This will prevent gas from getting in to that side. Now, take the entire petcock and soak it in gas for 24 hours.
What causes a fuel valve on a motorcycle to leak?
A leaking fuel valve can be caused by long term storage. Store any motorcycle or ATV long enough & you will end up with a leaking fuel valve. Could be a drip. Could be more. So you buy a used one off the shelf at a salvage yard. Install it on your bike and it leaks too.
What happens if you have a leaking gas valve?
A leaking gas valve can do more than just waste gasoline. If a leaking gas valve or carb float needle cause gasoline to fill the engine crankcase and you attempt to run the bike, the fuel is then pumped through the system washing oil from vital areas such as bearings. This situation is called gas washing the engine.
What causes a fuel valve to dry out?
When fuel valves are removed from the tank or the tank they are on is drained, the rubber o-rings that are supposed to prevent leaks are exposed to air. This causes them to dry out and shrink. Also, if the valve housing is made of aluminum is will oxidize in the presence of air (oxygen) and can cause a “crust” to form.