Why does my four wheeler only run with the choke on?
If a motorcycle or ATV only runs with the choke on, it’s because the richer “choke on” mixture is actually closer to the engine’s normal operating fuel mixture than the leaner “choke off” mixture. So when the choke is turned off, the engine gets too little fuel and too much air for it to run and it stalls.
Can you ride a four wheeler with the choke on?
You shouldn’t ride or rev the ATV while the choke is on. Wait for the engine to warm up, turn the choke off, and then you can ride. There are four main types of ATV choke. The plunger style, lever style, handle style, and switch style.
Why does an engine only run on choke?
An internal combustion engine needs a precise mixture of fuel and air to run properly. 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.
What is the choke mechanism in an EFI engine?
In EFI engine the manual choke lever mechanism is absent. Here the air-fuel mixture automatically controlled and changed by the ECU considering weather, temperature and other situation. It automatically controls both air and fuel injections. And it also has own mechanism to rich the mixture. In EFI engine ECU does rich mixture automatically.
Can a choke lever increase the fuel ratio?
Yes choke lever directly increases the fuel ratio in air-fuel mixture. In carburetor chock lever operates a valve or gate to control air or fuel to rich the fuel in the mixture. The chock lever mechanism works to increase fuel or decrease the air ratio in the supply.
Do you need a carburetor choke on a motorcycle?
In carburetor fitted bikes the air-fuel mixture composed and feed the engine mechanically or somewhat manually. And in such mechanical technology motorcycle carburetor choke presence is mandatory.
An internal combustion engine needs a precise mixture of fuel and air to run properly. 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.
How does a choke work on an ATV?
By creating a richer fuel to air ratio, the engine has more gas to stay running. Once the engine is warmed up though, it won’t need the extra fuel. You shouldn’t ride or rev the ATV while the choke is on. Wait for the engine to warm up, turn the choke off, and then you can ride.
What to do if your dirt bike only runs on choke?
If the leak is on the air boot to carburetor connection, then tighten that clamp. This should fix it unless there is a crack in the air boot. If there is a crack, you will need to replace the air boot. If the leak is on the vacuum lines, then it is easiest to just replace the offending line.
How do you open choke on cold engine?
To open the choke to start a cold engine, pull up on the switch so it is sticking straight out, 90 degrees from its starting position. Once the engine is warmed up, return the switch to its original position. Here I will answer some of the most common choke related questions I get.