Question: Why Does My 2 Stroke Engine Only Run On Choke?

Why won’t my bike run with choke off?

A choke is active when it is closed;that is, it is on when it is closed.

Normally you would keep it on (closed) until the engine warms up and then turn it off (open).

If it really won’t run without the choke being closed/on then it’s not getting enough fuel and the carbs probably need cleaning..

How long should I warm up my motorcycle?

Everyone I talked to said about one minute of motorcycle warm-up is plenty of time to allow the piston and other parts to gradually expand and ensure good oil circulation to the upper end. In fact, most riders just start the engine and then spend a minute or two putting on their helmet and preparing to ride.

What happens if choke is left on?

It will not damage the engine at all. All that will happen is that it will run richer, thus using more fuel. If you did it for thousands of miles you’d probably end up with more deposits in the engine/exhaust, but even that is easy to sort.

What makes a 2 stroke hard to start?

(1) That you’ve flooded the engine by trying to start it, or that the lower end is loaded up (because you left the gas petcock on). (2) That there is no spark (thus, the plug is wet because the plug never ignited the fuel). Fixing a wet plug (from a flooded engine) is easy.

What causes a 2 stroke to bog?

Not Getting Enough Fuel This is when the dreaded “bog” happens. These are the top reasons why your dirt bike might not be getting enough fuel: … Fuel line pinched/kinked. Carb float height is set too low.

What does the choke do on a 2 stroke engine?

A choke restricts the flow of air at the entrance of the carburetor. This creates a stronger vacuum which draws in less air but more gasoline to create a “rich” fuel which is easier to ignite when the engine is cold.

Why do I have to choke a warm engine?

In warm weather, a richer mix (more fuel in mix) is simply wastage of fuel as unburnt fuel is simply expelled. If the engine and carburetor are hot, it may happen that putting choke on will prevent ignition (engine won’t start and one can smell petrol in exhaust).

What happens if you leave the choke on too long?

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.

Why does my motorcycle run better with the choke on?

As far as your bike running better with the Choke ON, that is a clear indication that your engine is being fed a lean mixture. Most carburetors have a choke that operates by either adding more fuel or by restricting incoming air. Both methods produce the same effective enriching of the mixture.

How long should you leave the choke on?

30 secondsThe choke usually “chokes” the air supply into the engine so it gets more petrol than usual. Hence it’s name. You should start the bike from cold with half or full choke depending on how cold it is. After 30 seconds is usually enough for most bikes.

Should Choke be open or closed when running?

The choke is a plate in the carburetor that opens and closes to allow more or less air into the engine. … When doing a cold start, the choke should be closed to limit the amount of air going in. This increases the amount of fuel in the cylinder and helps to keep the engine running, while it is trying to warm up.

How do you properly choke an engine?

A typical starting procedure for an engine with a choke might be:Close the choke (usually on carburetor).Set the throttle control (if any) to the START or HIGH position.Pull the starter cord once or twice (if it doesn’t start on the first one).If it still doesn’t start, open the choke half way.More items…

Do I need a choke on my carburetor?

If you live in a warm climate you may not need a choke. Also, most race vehicles will use a carb without a choke. If you do require a choke, you can choose the one that best suits your needs.

Can I ride with the choke on?

It’s perfectly fine to start the bike with the choke on, then ride it until it warms up a little before turning off the choke. Absolutely no extra stress on the engine, at all. Revving the engine before the bike is warmed up, though, does put stress on the engine, as the oil is cold and lubrication isn’t as good.

What is choke used for?

In electronics, a choke is an inductor used to block higher-frequency while passing direct current (DC) and lower-frequencies of alternating current (AC) in an electrical circuit.

Why does my engine only run with the choke on?

An engine that requires the choking ( partial or full ) after initial engine warm up is an indication that the engine fuel air mixture system is out of adjustment. … Both the manual choke system and the manual primer system engines may experience this similar symptom of running only when the fuel mixture is enriched.

How does a carburetor choke work?

By restricting the flow of air into the throat of the carburetor, the choke valve reduces the pressure inside the throat, which causes a proportionally-greater amount of fuel to be pushed from the main jet into the combustion chamber during cold-running operation.

Is it OK to use starting fluid on a 2 stroke?

Using starter fluids such as ether based or any starter fluid made for starting 4 stroke engines will cause severe damage to a two stroke motor. Normal engine starter fluid should not be used in a two stroke is because it does not contain enough lubricating properties to protect the piston and cylinder walls.

Which position is choke on?

The choke position is the fourth setting on the master control lever. This setting is used to start the saw when its motor is cold.

Is it bad to run mower with choke on?

it is not advisable to run lawn mover engine in the choke position. For start up it is OK. But after it for normal running, choke position is not advisable. In that position the engine will consume more fuel.