What causes Suzuki Eiger 400 to hesitate and backfire?

Suzuki eiger 400 hesitates and backfires What is the on/off position of the choke lever. I’ve cleaned/rebuilt carb replaced spark plug, flywheel, stator, fuel valve, fuel filter, main (choke) diaphragm with plunger and CDI. When in neutral and I accelerate it hesitates sputters and backfires, but eventually builds RPM.

How can I troubleshoot my Suzuki Eiger ATV?

Like any other vehicle, you can troubleshoot it from home if it is not working correctly. Turn the ignition and start the Suzuki Eiger. If the engine has difficulty starting or will not start at all, there may be a problem in the electrical or starting system.

What kind of engine does Suzuki Eiger have?

The Suzuki Eiger is a four-wheel drive all-terrain vehicle designed for riders who have experience operating these type of vehicles. The 376 cc SOHC (single over head cam) engine is a four stroke, air-cooled engine that will propel this machine through most trails.

What happens when an Outlander 400 gets hot?

I have no ideas since it will start and run fine when cold and not run at all once it gets hot. Any ideas would be appreciated. ’06 Outlander 400, starts fine and runs fine. After running through sand at low RPM for about 15 -20 minutes it dies, sounds like it is running out of gas.

What to do when your Outy 400 gets hot?

If the fuel is “vaporizing” in the line, the rubber fuel line would probably fail. You might check your rectifier and voltage when hot. Check your gas cap. If the vent in it is not working properly it won’t get fuel fast enough to fill the carb. As you run it it will drain the bowl and take a while to re-fill.

What causes an ATV engine to backfire when out of turn?

Why Does Your ATV Backfire? Backfiring in an ATV engine, or any small engine, is usually the result of either one or multiple spark plugs igniting the fuel in the chamber when it is out of turn, specifically during the combustion cycle when the exhaust valve is open on that cylinder. So does that alone cause the backfire?

Is it OK to ride a 4 wheeler with a backfire?

The good news is that with consistent and proper maintenance, you should be able to avoid this problem overall. There is no reason why it should ever get to that point to begin with, not only is it in your best interest to provide routine maintenance, but riding a 4 wheeler that backfires is uncomfortable and annoying!

Why does my quad backfire in the morning?

As explained above, backfiring is when the fuel is overly rich and the combustion is released on the back end of the quad (the exhaust pipe), but spitting usually takes place in the morning or on the initial start of the engine and has the combustion come out of the carburetor itself. Spitting usually ceases once the engine is warm.

Can a bad throttle position sensor cause idle surging?

Idle surging can be caused due to other issues in the car, but if it happens in conjunction with other throttle position sensor symptoms, the culprit is often the TPS. At idle, the ECM will not get the correct information and the throttle will variate randomly causing idle surges. 3) Check Engine Light

Why does my ATV backfire when I start the engine?

To put it differently, when the ATV engine receives an overly rich mixture of air and gas, the excess fuel in a cylinder doesn’t get burned in time for the exhausting process of the engine cycle. As soon as exhausting starts, the cylinder’s exhaust valve opens, which immediately igniting the unburned fuel because of the influx of extra air.

What happens if you backfire on a motorcycle?

On the other hand, a strong backfire can result in serious damages like cracks in the exhaust manifold. Worse, you may have to undertake costly and extensive repairs to get the engine working pop-free again. All in all, a backfire will hardly cause injuries to the rider.

What causes a Chevy 350 to backfire constantly?

The air intake boot or tube transfers air from the mass air flow sensor into the throttle actuator and then into the engine. If there is a problem with these parts such as a tear or rip it will allow un-metered air into the engine which the computer will see via the oxygen sensor which in turn will deliver less fuel creating a lean condition.

What to do if your Honda starts up and backfires?

Cap was definitely plugged. I put the red straw end of a can of carb cleaner into the vent hole and sprayed down into it. Nothing, except the pressure that built up in the cap and blew the cleaner back out the top. Then I reamed the two small holes under the cap w/small drill bits and did the main top vent likewise.

What causes an intake back fire in an engine?

This will help locate the system that is having a problem and needs repair. An intake back-fire explosion can be caused by the fuel air mixture being to lean when the engine is demanding power. Every internal combustion engine runs on a mixture of 14 to 1 which is fourteen parts air to one part fuel.

What causes a backfire on an unburned engine?

Unburned fuel then is allowed to pass into the exhaust system where it can backfire. The same type of problem can be caused by a worn out or damaged spark plug wire. A bad wire will make the spark’s travel difficult, weaken the spark, or simply push it into an adjacent wire or to ground, resulting in a backfire.

What causes an engine to backfire after a compression stroke?

On the other hand, retarding the spark too much after the cylinder compression stroke will not only cause engine to lose power and waste fuel, but can also lead to exhaust backfire (aka afterfire). This is because flames from the combustion can jump through an open exhaust valve and cause unburned fuel to explode in the exhaust system.

What causes a car exhaust pipe to backfire?

Backfiring happens all the time, in cars and bikes, you just don’t hear it because the muffler/exhaust. Since you’ve modified it, now you do. What it is, is incomplete combustion, fuel is left over, and shot into the exhaust pipes. The heat from the pipes then ignites the vapor and boom, backfire.

Why does the exhaust on my motorcycle backfire?

Shorty exhaust also has a tendency to backfire more because there’s not as much pipe length for the turbulent air to become more smooth like the motorcycle was originally designed for. Engineers put a specific length of exhaust pipes on motorcycles because that way it will get the best fuel efficiency.

What causes an engine to backfire during acceleration?

The most common causes for backfiring during acceleration include an incorrect fuel-to-air ratio, a faulty ignition and bad wiring. Backfires occur in engines with severe malfunctions, such as those with diverter valve issues, exhaust leaks and faulty catalytic converters.

Why does my ATV backfire all the time?

Leaner AFR produces higher combustion temperatures and maximum power output usually hovers just rich of the Stoichiometric AFR, but unless you’re a mechanic preparing an ATV for a race, the numbers are kept at the Stoichiometric ratio. But what if that’s not it? You’ve checked and cleaned the air filter and the AFR is on point.

What to do if your Suzuki ATV won’t start?

If there is not enough gas in the ATV, it will not start. Checking the fluids regularly to see if there are any leaks or if any of the fluids are dangerously low. Top up any fluids that may be low before you use the ATV. Adjust the fuel idle mixture screw on the Suzuki Eiger’s carburetor if the engine is running rough.

How does the choke work on a carburetor?

If you are not sure if the “choke” lever is in the open or closed position you can figure this out easily. Simply remove the air filter fitted to the carburetor and look into the throat of the carb. Move the “choke” lever back and forth. When the “choke” is closed you will see a metal plate restrict the opening of the carb throat.

Is it OK to open the choke on a bike?

If the bike is cold than yes! Close the choke fully before trying to start it, and do not touch the throttle. Once the bike starts and warms for a minute you can open the choke and drive away. This is a good practise as all bikes need to sit for that first minute of operation to allow for lubricating oil to work its way through the engine.

When to use the choke on or off?

Move the “choke” lever back and forth. When the “choke” is closed you will see a metal plate restrict the opening of the carb throat. This is the CHOKE ON! position. When the “choke” is open you will not see the metal plate and you can see right into the throat of the carb. This is the CHOKE OFF position.

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