Hey guys, ever wondered what happens when the pulser on your Tiger motorcycle starts acting up? The pulser, also known as the pickup coil, is a crucial component in your bike's ignition system. Think of it as the heart of the system, sending signals that tell the spark plugs when to fire and ignite the fuel-air mixture. When this little guy isn't working correctly, you'll definitely notice some performance issues. Let's dive into the signs of a weak pulser and what you can do about it. So you can identify the problem early and get your ride back to its roaring best!

Common Symptoms of a Failing Pulser

When your pulser is failing, the symptoms can range from minor annoyances to major headaches. Recognizing these signs early can save you from being stranded on the side of the road. Let's break down the most common indicators of a weak pulser.

1. Difficulty Starting

One of the first and most noticeable signs of a weak pulser is difficulty starting your motorcycle. You might find yourself cranking the engine repeatedly without it firing up. This happens because the pulser isn't sending a clear signal to the ignition control module (ICM), which then fails to trigger the spark plugs at the right time. Imagine trying to start a fire without a reliable spark – that's essentially what's happening here. The engine might turn over, but it just won't catch. This can be incredibly frustrating, especially when you're in a hurry or out on a ride. Checking the pulser should be high on your list if you're experiencing persistent starting problems.

2. Intermittent Stalling

Another telltale sign of a failing pulser is intermittent stalling. Your Tiger motorcycle might run fine for a while, and then suddenly, without warning, it stalls. This can happen at any speed and is particularly dangerous if it occurs while you're navigating traffic. The reason behind this stalling is that the pulser is sporadically failing to send the necessary signals, causing the engine to cut out. Think of it like a flickering light bulb – it works and then it doesn't, making your ride unpredictable and unsafe. If you experience stalling, especially when it seems random, it's crucial to investigate the pulser.

3. Misfiring Engine

A misfiring engine is another key indicator of a weak pulser. Misfiring occurs when one or more cylinders in your engine fail to ignite the fuel-air mixture properly. This can result in a rough-running engine, reduced power, and poor fuel economy. When the pulser is weak, it may send inconsistent or incomplete signals, leading to misfires. You'll likely feel the engine sputtering or hesitating, especially under acceleration. A misfiring engine not only affects performance but can also cause damage to other components over time. So, if you notice your Tiger motorcycle running rough, it’s wise to check the pulser along with other ignition components.

4. Poor Performance

Overall poor performance can be a broad symptom, but it’s often linked to a failing pulser. You might notice that your motorcycle lacks its usual power, especially when climbing hills or accelerating. The engine might feel sluggish, and you may struggle to reach higher speeds. This decline in performance happens because the pulser isn’t providing consistent signals, leading to inefficient combustion. It’s like trying to run a marathon with a strained muscle – you can still move, but you’re not at your best. If you feel a significant drop in your bike’s performance, consider the pulser as a potential culprit.

5. Check Engine Light

In some cases, a failing pulser can trigger the check engine light on your motorcycle's dashboard. Modern motorcycles have sophisticated electronic control units (ECUs) that monitor various sensors and components. When the ECU detects an issue, such as a faulty pulser signal, it illuminates the check engine light to alert you. While the check engine light can indicate many problems, it's always a good idea to have the fault codes read to pinpoint the exact issue. If the codes point to an ignition or timing problem, the pulser is definitely worth checking.

Diagnosing a Weak Pulser

Okay, so you suspect your pulser might be failing. What's next? Diagnosing a weak pulser involves a few key steps and tools. Don't worry; it's not rocket science, and with a little patience, you can figure it out. Let's walk through the process to help you confirm whether your pulser is the problem.

1. Visual Inspection

Start with a visual inspection. This is the easiest and often most revealing step. Locate the pulser on your Tiger motorcycle. It's usually mounted near the crankshaft or camshaft, close to the flywheel or rotor. Look for any obvious signs of damage, such as cracked housing, frayed wires, or corrosion. A damaged pulser housing can expose the internal components to the elements, leading to malfunctions. Frayed wires can cause intermittent connections, and corrosion can impede the signal. If you spot any of these issues, it's a strong indication that the pulser needs replacement. Even if everything looks okay visually, don't rule out a faulty pulser just yet – move on to the next steps.

2. Multimeter Testing

The most reliable way to diagnose a weak pulser is by using a multimeter. A multimeter can measure resistance, voltage, and current, allowing you to check the electrical properties of the pulser. Here’s how to do it:

1. Locate the pulser wires: Identify the wires connected to the pulser. Consult your motorcycle's service manual for the exact location and color codes.
2. Set the multimeter to ohms: Set your multimeter to measure resistance (Ohms Ω). This will help you check the pulser coil's resistance.
3. Measure resistance: Disconnect the pulser from the wiring harness and connect the multimeter probes to the pulser terminals. Compare the reading with the manufacturer's specifications. A reading outside the specified range indicates a faulty pulser. For example, if the manual states the resistance should be between 100-200 ohms, and you're getting a reading of 50 ohms or 300 ohms, the pulser is likely bad.
4. Check for continuity: Use the multimeter to check for continuity between the pulser wires and the motorcycle frame. There should be no continuity, indicating that the pulser coil is not shorted to ground. Continuity suggests a short circuit, which can cause the pulser to fail.

3. Oscilloscope Testing (Advanced)

For a more in-depth diagnosis, an oscilloscope can be used to observe the waveform generated by the pulser. This method is more advanced and typically used by experienced mechanics, but it provides a clear picture of the pulser's performance.

1. Connect the oscilloscope: Connect the oscilloscope probes to the pulser wires while the motorcycle is running.
2. Observe the waveform: Start the engine and observe the waveform on the oscilloscope screen. A healthy pulser will produce a clean, consistent waveform. A weak pulser may show a distorted, weak, or inconsistent waveform. This can indicate problems with the coil windings or internal components.

If you're not comfortable using an oscilloscope, it’s best to take your motorcycle to a qualified mechanic who can perform this test.

Steps to Replace a Faulty Pulser

Alright, you've confirmed that your pulser is indeed faulty. Don't sweat it; replacing it is a manageable task, especially if you're a bit handy with tools. Let's go through the steps to get your Tiger motorcycle back in action. Remember, safety first – always disconnect the battery before starting any electrical work!

1. Gather Your Tools and Parts

Before you start, make sure you have everything you need. This will save you time and frustration. Here’s a checklist:

• New Pulser: Purchase a replacement pulser that's compatible with your Tiger motorcycle model. It's best to get an OEM (Original Equipment Manufacturer) part or a reputable aftermarket brand to ensure quality and reliability.
• Basic Tools: You'll need a socket set, wrenches, screwdrivers, and pliers. A torque wrench is also essential for tightening bolts to the correct specifications.
• Multimeter: Keep your multimeter handy to test the new pulser before installation.
• Service Manual: Your motorcycle's service manual is your best friend. It provides detailed instructions, diagrams, and torque specifications.
• Safety Gear: Wear gloves and safety glasses to protect yourself.

2. Disconnect the Battery

This is a crucial safety step. Disconnect the negative terminal of your battery to prevent any electrical shorts or shocks while you're working on the motorcycle. Safety first, always!

3. Locate the Pulser

The pulser is typically located near the crankshaft or camshaft, close to the flywheel or rotor. Refer to your service manual for the exact location on your Tiger motorcycle model. You may need to remove some covers or components to access it. Take your time and be methodical – it’s better to be thorough than to rush and risk damaging something.

4. Disconnect the Old Pulser

Once you've located the pulser, disconnect the electrical connector. Be gentle and avoid pulling on the wires. If there's a retaining clip, make sure to release it before pulling the connector apart. Next, remove any mounting bolts or screws securing the pulser in place. Keep these bolts safe, as you'll need them for the new pulser.

5. Install the New Pulser

Now it’s time to install the new pulser. Align it in the same position as the old one and secure it with the mounting bolts or screws. Use a torque wrench to tighten the bolts to the manufacturer's specified torque. This ensures the pulser is securely mounted without being overtightened, which could damage the threads. Reconnect the electrical connector, making sure it clicks into place. Give it a gentle tug to confirm it's securely connected.

6. Test the New Pulser

Before you put everything back together, it's wise to test the new pulser. Use your multimeter to check the resistance and continuity, just like you did when diagnosing the old pulser. If the readings are within the manufacturer's specifications, you're good to go. If not, double-check your connections and the pulser itself – there might be an issue with the new part.

7. Reassemble and Test Ride

Reassemble any parts you removed to access the pulser, such as covers or fairings. Double-check that all connections are secure and that everything is in its proper place. Reconnect the battery, and start your Tiger motorcycle. It should start smoothly and run without misfires or stalling. Take it for a test ride to ensure the problem is resolved and that your bike is running smoothly. Pay attention to the engine's performance, acceleration, and overall feel. If everything checks out, you've successfully replaced your pulser!

Maintaining Your Pulser and Ignition System

Preventive maintenance is key to keeping your Tiger motorcycle running smoothly and avoiding future pulser problems. A little care can go a long way in extending the life of your ignition system. Let's look at some essential maintenance tips to keep your pulser and related components in top shape.

1. Regular Inspections

Make it a habit to regularly inspect your motorcycle’s ignition system, including the pulser. Check for any signs of damage, such as cracks, frayed wires, or corrosion. A visual inspection can catch potential issues before they turn into major problems. Look closely at the pulser housing and wiring, and make sure everything is securely mounted. Early detection can save you time and money in the long run.

2. Clean Electrical Connections

Corrosion and dirt can impede electrical signals and cause your pulser to malfunction. Periodically clean the electrical connections with a contact cleaner. Disconnect the connectors, spray them with the cleaner, and then reconnect them securely. This simple step can ensure a good electrical connection and prevent intermittent issues. It’s also a good idea to apply a dielectric grease to the connectors to protect them from moisture and corrosion.

3. Check Wiring and Grounds

Faulty wiring and poor grounds can wreak havoc on your motorcycle’s electrical system, including the pulser. Inspect the wiring for any damage, such as cuts, abrasions, or loose connections. Make sure all ground connections are clean and tight. A loose or corroded ground can cause all sorts of electrical problems. Use a wire brush or sandpaper to clean ground connections and ensure a good, solid contact.

4. Proper Storage

If you're storing your Tiger motorcycle for an extended period, take steps to protect the electrical system. Disconnect the battery to prevent it from draining, and store the bike in a dry environment. Moisture can cause corrosion and damage to electrical components, including the pulser. If possible, use a motorcycle cover to protect your bike from the elements.

5. Professional Servicing

Don't hesitate to seek professional help when needed. If you're not comfortable performing certain maintenance tasks or if you suspect a serious issue with your ignition system, take your motorcycle to a qualified mechanic. Regular servicing can identify potential problems early and ensure your bike is running optimally. A professional can also perform diagnostic tests and provide expert advice on maintenance and repairs.

Conclusion

So, there you have it, guys! Understanding the signs of a weak pulser on your Tiger motorcycle and knowing how to diagnose and fix the issue can save you from a lot of headaches. From difficulty starting and intermittent stalling to misfiring engines and poor performance, a faulty pulser can cause a range of problems. By following the steps outlined in this guide, you can confidently tackle pulser issues and keep your ride smooth and reliable. Remember, regular maintenance and timely repairs are key to enjoying your Tiger motorcycle for years to come. Happy riding!