How does a fuel pump on a motorcycle work?
Or the vacuum hose gets old, stiff, and crack, preventing a good “vacuum signal” from reaching the diaphragm. Fuel should NEVER be able to leak from the fuel side of the diaphragm to the vacuum/pressure side, as it will end up in your crankcase, diluting your oil.
What to do if your fuel pump fails?
PRIME switches you back to a gravity feed, off the bottom of the tank, in such case as your fuel pump has failed. Generally you can get a rebuild kit (pump diaphragm and replacement gasket for between the petcock/pump and the tank) for $20 or so and be good to go.
How can you tell if your fuel pump is dead?
Of course, there could be other explanations for your engine’s failure to start besides a failed fuel pump. To confirm that your pump has failed, check the pressure in your fuel lines with a fuel pressure gauge; if it reads zero, then your pump is likely dead.
What kind of fuel pump does a Suzuki Intruder use?
Just FYI, some carbureted bikes, like the Suzuki Intruders, use an electric fuel pump, because one carburetor is too close to the bottom of the tank to reliably fill when the engine runs.
Why is my fuel pump not working on my motorcycle?
Fuel injection systems are tricky to deal with, which makes it challenging to determine whether your bike is having injector issues or another problem. But since fuel injectors very rarely fail, experts suggest a pump failure is more likely.
Can a fuel pump be changed on a Harley Davidson?
This article applies to fuel-injected Touring models. Carbureted models use a small strainer attached to the fuel petcock, and don’t have any pump at all. The filter on an early bike can simply be changed by removing the petcock from the tank.
How does fuel injection work on a Harley Davidson?
Your fuel injected Harley Davidson touring bike needs a proper supply of presureized fuel to run properly. And much like air filters cleanse the air as it enters the engine, fuel filters strain any unwanted contaminants from the fuel before it is plumbed to the fuel injection system.
Why is my petcock on my motorcycle not working?
The line between the petcock and the engine can sustain damage, too, which keeps the system from operating properly. With leaks—whether from cracking, rot, or road damage—you might be able to reseal the line, or you may need a replacement before you’re road-worthy again.