Where is the Petcock on my motorcycle?

Where is the Petcock on my motorcycle?

Gasoline essential to the proper operation of your motorcycle is controlled by a “Fuel Control Valve” otherwise known as a “Petcock”. This valve is characteristically located at the bottom of the fuel tank and can have a number of different configurations. Fuel-Injected motorcycles rarely have a petcock.

What position should my Petcock be in?

Most older motorcycles have a three-position fuel petcock valve (known as a “petrol tap” in the UK) mounted on or nearby the fuel tank to control the supply of gasoline: on, off, and reserve. The reserve position accesses the bottom portion of the fuel tank.

How do I know if my Petcock is bad?

If the bike runs on RES and PRI but has issues running in ON,then the petcock is bad. If you disassemble the petcock,you will more than likely damage the internal diaphragm.

Can you bypass a Petcock?

Yes you can just run a hose from the tank to the carb and plug off the vacuum line. Only problem is that the bowel of the carb may over fill when it is just sitting, but probably not. It is easy enough to check out and see, if it does not work out just put it back together as it was.

Is a Petcock necessary?

The petcocks purpose is to prevent fuel flow from the fuel tank to the motorcycles carburetors. They have this in part because motorcycles spend a large chunk of their lives parked on a sidestand. And the petcocks prevent the fuel from overloading the float seals on the “downhill” side of the bike.

What happens if you leave your Petcock on?

What risks does this introduce that necessitates a manual shutoff? Without the shutoff, if the carburetor float failed to close the valve tightly enough to stop the fuel flow, then gas would continue to trickle into the carb, overflowing the bowl and flowing down into the intake tract.

What happens if you leave the choke on overnight?

Leaving the choke on for too long will cause unnecessary engine wear and waste fuel. The engine needs its fuel to be vaporised in order to burn it. This is done by the carburettor where the fuel is mixed with clean air coming from the air filter, and sent into the pistons to be ignited.

Should you turn fuel off on motorcycle?

Yep, It is advisable to turn off Fuel when you are parking your bike for longtime as most of the motorcycles fuel ⛽ tank is higher than the carburetor which makes the continuous flow of fuel to carburetor to from fuel tank when if carburetor failed to close the valve gas would continue to trickle into carburetor which …

How long can fuel sit in motorcycle?

Unstabilized gas in a motorcycle can start going bad in about 30 days, especially when it is not being used. The exposure to oxygen eventually changes the chemistry of gas which can lead to gum and varnish deposits. Gas should not be used if it has been sitting for longer than 6 months.

How should I turn off my motorcycle?

Either way, here are a few ways you can turn off you motorcycle.

1. Use the key to turn the ignition off.
2. Push the kill switch then use the key to turn off the ignition.
3. Put the kickstand down then use the key to turn off the ignition.
4. Use the start/stop button.

What can a bad Petcock cause?

It’s the float that controls how much fuel gets into the float bowl. However, if the petcock is not shutting the fuel off it could cause the carb to overflow while hauling your bike on a trailer as the float bounces around and lets the bowl fill more than it would sitting still.

What is a vacuum operated Petcock?

The way a vacuum petcock works is the vacuum pulls the diaphragm back, compressing a spring and releasing pressure on a ball or some other sort of valve, this allows fuel to flow around the ball and to the carb. When the engine shuts off, the vacuum is removed and the fuel shuts off.

What does a fuel Petcock do?

A petcock, or sometimes referred to as a fuel tap or fuel valve, is a 2 or 3 way valve on the bottom of your fuel tank. It works by directing fuel from your tank to the carburetors or fuel injectors. Fuel is pulled by either gravity or vacuum from the fuel system.

How do I know if my scooter fuel pump is bad?

The first and most common symptom of a bad fuel pump that you should notice is a whining noise from the gas tank. This symptom can almost always be attributed to the fuel pump. A whining fuel pump is a sign that the fuel pump is wearing out and should be replaced.

Why does my scooter dies when I give it gas?

This can be caused by a faulty petcock (or vacuum leak), bad hoses, clogged fuel filter, stuck float, any of which could also be exasperated by low quality gas.

Why does my scooter not accelerate?

In most cases a motor scooter will lose power when the combustion chamber is not provided with the correct mixture of air and gasoline. In other cases, a faulty spark plug is the cause, the lack of a proper spark will inhibit power on a moped or motor scooter resulting in sapped acceleration.

Why does my motorcycle hesitate when I accelerate?

Poor acceleration or hesitation may be a sign that your spark plug is worn or dirty or the incorrect type of plug is being used. Examples of poor acceleration include an absence of response or a delayed reaction when you twist the hand throttle or shift the thumb lever.