Why does my bike only run on choke?
So, why does a motorcycle only run with the choke on? It means your motorcycle is not getting enough fuel, and this can be caused by dirty or clogged pilot jets, clogged fuel line, clogged fuel filter, dirty petcock, loss of vacuum in the carburetors, among other carburetor issues.
What happens when you turn the choke on for a carburetor?
When you turn the choke on for a carburetor, it is creating a rich condition. This makes the bike easier to start, by increasing the amount of fuel present in the air/fuel mixture. When an engine is cold, it needs a little richer mixture in order to get up to operating temperature.
What causes a motorcycle engine to only run on choke?
Tiny debris particles from dirty fuel can easily block a jet, but the most common cause of clogged jets is stale fuel sitting in the carb when the bike or ATV is inactive. When fuel breaks down, it leaves behind a gummy residue, almost like a varnish that builds up on everything it touches, including the pilot and main jets.
How do you fix choke on dirt bike?
Put the choke on and start the bike up. Once is running, mist some carb cleaner or starting fluid around the air boot and around the vacuum hoses (if there are any). If the engine momentarily races, then you have an air leak. Read below in the section on how to fix air leaks to get this addressed.
Why does my air conditioner turn off when I Turn Off the choke?
It can be caused by an air leak. Air leaks can be caused by cracks in the vacuum lines on some carbs, a crack in the air boot, or simply a loose clamp between the carb and the air boot. Remember, more air in the system means a leaner air/fuel ratio, thus causing an overly lean condition when the choke is turned off.
When do you use choke on a carbureted motorcycle?
Carbureted motorcycles utilize a choke to restrict air flow to the engine causing a rich fuel mixture. The choke, under normal operation, is only used when starting the engine. However problems with the carburetor or choke can arise causing starting or running issues. Carbureted Bikes have chokes
Why does my dirt bike only run on choke?
You won’t see one of these on a dirt bike because the choke circuit actually just adds more fuel to the mixture with the same amount of airflow. So, a far too lean air/fuel mixture is why your bike only runs with the choke on.
What does a choke do to an engine?
When the engine is cold, it needs slightly more fuel in the fuel/air mixture for it to start, which is what the choke does. The choke increases the amount of fuel in the mixture, creating a richer mixture.
Where is the choke on a Honda Shadow?
Learning to use a choke can sound like challenge to new riders, but its actually very simple. The choke is normally located on the left side of the motorcycle. On the Honda Shadow, it is located between the cylinders as indicated by the red arrow below. When you go to start your motorcycle you should pull the choke out as shown in the image below.