5 Common Suzuki Eiger 400 Problems (How to Fix)

The Suzuki Eiger 400 is renowned for its sturdiness, adaptability, and superb handling of rugged terrain. 

It weighs 590 pounds, has a 4-US-gallon petrol tank, a 376 cc, mono overhead cam, four-stroke, single-cylinder, air-cooled engine, and a two-wheel or four-wheel drive option.

The Eiger 400, though, could eventually run into some issues like any other vehicle.

The most common Suzuki Eiger 400 Problems include the following:

  • Starting Problems
  • Petcock Problems
  • Crankshaft Issues
  • Cold Engine Problem
  • No Spark

The most frequent issues experienced by Eiger 400 owners will be discussed in this article, along with solutions to maintain your ATV in good working order for seasons to come.

Suzuki Eiger 400 Problems

Suzuki Eiger 400 Problems

Begin exploring these parts of the article to identify the issues and determine how to address them.

1. Starting Problem

The battery is probably the reason why your ATV snaps every time you attempt to ignite it. Several causes exist, ranging from faulty connections to battery-draining current draws. 

The ATV’s starter solenoid is most likely broken if the power source is not the issue. 

Obtaining a weak or inadequate spark on the engine could be another factor. A weak spark won’t be able to light the fuel and start the engine.

The Fix:

If the engine starts, try shorting off the two 10mm nuts on the ignition relay. If not, check the relay and safety switches. Make sure there is no exposed gasoline before it flashes. 

If nothing happens, try softly tapping the starter motor. If it functions, the starter’s brushes are worn out. 

Don’t continue doing it since you’ll burn the starter’s commutator. Brushes cost little. 

Also, run your engine again after placing it on the piston or another surface that will ground it. If you’ve done it correctly, the grounded piece should touch something and send out some sparks. 

2. Petcock Problems

One of the worst problems for an ATV owner can be a lousy petcock. The petcock could malfunction, in which case the car would probably not start at all.

A faulty petcock could leak fuel and eventually harm the carburetor since it controls the flow of fuel.

In more extreme situations, leaving a lousy petcock on might start a fire. Because of the engine’s hydraulic lock problems, the damage may also be permanent.

The Fix:

Regularly check the petcock in order to make sure no substance is clogging it. A service center may be of assistance if the petcock has leaks or blemishes. 

When you have got the gas tank off, look for yourself if gas comes out when the ignition is on or off. 

If it does, try soaking the petcock and turning the petcock on and off to see if it stops. 

You should also change the oil and filter because your oil has become tainted.

3. Crankshaft Issues

A damaged crankshaft is typically to blame for significant vibrations that the driver has occasionally encountered while running the vehicle. 

The ATV may also be difficult to start and may even backfire if its crankshaft is damaged.

Overheating is the leading cause of a damaged crankshaft. If the cooling system malfunctions, the engine may overheat and interfere with the crank sensor’s operation. 

In the end, excessive heat production could cause the casing to suffer significant damage and halt the ATV from operating.

The Fix:

Replace the crankshaft in the first place or have a balanced crankshaft through offloading weight. Also, you have to check crankshaft seals more often to detect problems quickly. 

For the crankshaft to last longer and remain intact, proper lubrication is crucial. 

Prior to each ride, the state of the oil should be checked, and the lubrication oil must be changed on a regular basis.

4. Cold Engine Problems

The engine cannot start in cold temperatures, so the ATV stops functioning as intended. 

Since the combustion chambers and energy channels do not heat up, more issues develop if the ATV is not left idle for a while. 

The vehicle needs warm up because of the icy circumstances in order for fuel to flow correctly. 

Each of these conditions lowered the battery’s life, which increased the amount of stress placed on it. 

Due to the engine’s inability to idle correctly in cold weather, the batteries must work more diligently to thin out the energy sources.

The Fix:

A dirty carburetor is the root cause of this issue. Give it a thorough cleaning before attempting to restart the engine at idle.

Set a hair dryer on low and place it close to the carburetor. Everything returns to its original state, and the Eiger start operating generally after some time. 

5. No Spark

The most frequent cause of an ATV’s lack of spark is a defective spark plug, possibly the incorrect plug used in its entirety or one that was not appropriately gapped. 

Another reason could be that the spark plug failed, which happens frequently and is typical.

The Fix:

You should inspect the spark plug cable or combustion coil wire for damage. When the spark plug is fastened into the engine, this wire connects. These can deteriorate over time as the wire is frequently exposed to gravel, stones, and other debris while riding.

Next, look for faulty switches or connections if the wire connecting the spark plugs appears to be in good condition. 

Disconnect the engine’s main electrical connector to accomplish this. 

By doing this, you will be able to disconnect the kill toggle switch, starter switch, and all of their related wire. See if you can get a spark right away.

If you notice a spark after disconnecting the main electrical link, one of those switches or the circuitry for any of those switches is the source of your issue. 

Your current objective is to navigate through and turn off all of the switches at a time in order to locate the problematic component. 

An ohm meter will help check each switch and wire individually. 

How Good is Suzuki Eiger 400?

Suzuki has a long history of producing exceptional off-road sport quads. As a result, when a vehicle as simple like the Suzuki Eiger 400 appears, it can’t help but be lost in the crowd of rockstar race cars.

In 2002, this recreational vehicle was unveiled to the general public. 

This dual-purpose vehicle has all the necessary components to deliver no-frills, old-school enjoyment, including a strong 376-cm3 engine, wire-actuated 2WD and 4WD, and an iconic tough design.

It’s a fantastic ATV, to put it briefly. Rapid revs and good handling. For a machine that weighs almost 600 pounds, steering is remarkably light

It is very powerful, with a top speed in the middle to upper 50s

A good jumper with power is applied to the ground by the front differential. It also makes a fantastic mud bike because of its high ground clearance and full skid plate. 

Additionally, it has excellent gas mileage, getting 25 mpg or more on a 4-gallon tank.

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