Why does my motorcycle only run with the choke on?

Why does my engine 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.

Is it bad to run a motorcycle with the choke on?

You may have asked yourself, did I hurt anything? The truth is that while this is not good for your bike and it will cause some problems if frequently done, it is not that bad for your bike. But if you do this too often, it will cause your bike to run richer (using more gas), and may cause damage to the motorcycle.

Why won’t my bike run with choke off?

The main reason why your motorcycle is not running without the choke on is because the engine is not getting the right air-fuel mixture for its intake. For air flow problems, check your air filter. … Fuel flow problems can be because of dirt in petcock, fuel line, fuel filter, pilot jets and the carburetor.

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What causes a motorcycle to not idle?

Carbon, oil residue and pitting on the spark plug electrodes will cause a weak or inconsistent spark, resulting in poor ignition and an inconsistent idle. A clogged air filter may not allow a sufficient amount of air into the combustion chamber, contributing to a rough idle.

How do you clean a carburetor without removing it?

Spray liberally with carb cleaner – trying to direct the cleaner into the jets – and leave to soak for a few minutes. Use an air line (or a can of pressurised air, sold as an ‘air duster’) to blow through the jets. Repeat the previous step and this one until you can see no more gunge.

Why does my mower only run when I push the primer?

When you prime the engine you are manually adding extra fuel in, so the running issue is most likely related to poor fuel that will not burn unless there is an excess amount present or a fuel deliver issue preventing enough fuel from getting through to begin with.

What happens if the choke is left on?

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.

How long should you choke a motorcycle?

After 30 seconds is usually enough for most bikes. Especially a small thumper. Just reduce the choke slowly. If it wont idle smoothly (sounds like an asthmatic pensioner) then it probably wants the choke on a bit longer.

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Why would a motorcycle died while riding?

There are several reasons why a motorcycle battery drains while riding including a bad battery terminal connection, corroded battery terminals, a bad stator, a bad rectifier/regulator, too many electrical add-ons, too old of a battery, and if you have a newer motorcycle, an automatic shut-off will happen if the battery …

How do you know if your bike is running lean or rich?

If you take a look at the spark plugs, you’ll notice an obvious difference. We noted that a motorcycle running lean will have a clean spark plug. A motorcycle running rich will have a much dirtier and soot-looking covered tip.

Should a bike start without choke?

It is normal for an engine to require some fuel enrichment for ‘cold’ starting. But… I regularly start the CG125 without choke only cracking the throttle open. If I don’t keep it going though it dies on idle and will always require choke to re-start then.