Kohler engines have long been synonymous with reliability and performance, powering a wide range of outdoor equipment from lawnmowers to generators. However, one common issue that Kohler V-Twin engine owners may face is ignition coil problems.
Kohler V-Twin ignition coil problems, especially, no spark, hard starting, and engine overheating have been troubling countless owners.
Whether you’re a seasoned mechanic or an avid DIY enthusiast looking to troubleshoot your own engine issues, understanding how these ignition coils work and knowing how to address common problems can save you time and money in the long run. So, let’s delve into the intricate world of Kohler V-Twin ignition coil problems, exploring their causes, symptoms, and potential solutions.
Causes of Ignition Coil Problems in Kohler V-Twin
Kohler V-twin ignition coil problems can be attributed to several common causes. Some of the main causes are mentioned below:
Bad Spark Plug
Spark plugs serve as crucial components in the ignition system of a mower, working hand in hand with the ignition coil to initiate fuel combustion. When spark plugs encounter problems such as being dirty or worn out, they can impede the ignition process and result in misfires.
Consequently, this places additional stress on both the gas and ignition coil components, hastening their wear and potential malfunction.
Faulty Kill Circuit
The kill circuit is an essential component of the Kohler engine’s functionality, as it is responsible for shutting down the engine upon activation of the kill switch. However, any malfunction or damage to the circuit components can lead to operational issues.
For example, a short in the kill lead, which connects the kill switch to the ignition coil, may result in engine misfiring or failure to start. Similarly, inadequate grounding of the blower housing can also interfere with the proper functioning of the kill circuit.
Lack of Maintenance
Poor maintenance practices, such as not cleaning or inspecting the ignition system regularly, can contribute to coil failures. In some cases, moisture ingress or exposure to harsh environmental conditions can also result in corrosion and malfunction of the coils.
Disrupt Voltage
Another common issue that leads to ignition coil troubles is improper voltage supply, which can lead to the ignition coil not receiving enough power to function efficiently. Another potential cause is faulty wiring or connections, which may result in inadequate contact with the ignition coil.
Symptoms of Kohler V-Twin Ignition Coil Issues
Kohler V-twin ignition coil problems can manifest through various symptoms that signal potential issues with the engine’s ignition system.
One primary indication could be difficulty starting the engine, including frequent stalling or misfiring. Another common symptom is reduced power output and engine performance, leading to slower acceleration and overall decreased efficiency.
Additionally, rough idling, irregular engine RPM fluctuations, and poor fuel economy are all signs that the ignition coil may be malfunctioning. A noticeable decrease in spark intensity or inconsistent sparking during operation can also point toward a faulty ignition coil.
Moreover, engine backfiring or popping sounds during operation and persistent trouble with maintaining a consistent running temperature are further indicators of potential Kohler V-twin ignition coil problems.
Common Kohler V-Twin Ignition Coil Problems
Now let’s focus on the issues that have troubled numerous owners around the world.
- Engine Not Starting
Numerous Kohler V-twin engine users have complained about their equipment failing to start due to recurring problems with the ignition coil. According to their accounts, the engine is producing sparks but is unable to ignite and start up.
If you’ve faced this problem before, the initial step is to remove the engine shroud and locate the electronic ignition module. Disconnect the small wire connecting to the ignition, which serves as the shut-off wire.
Test for spark, if present, then the issue lies not with the ignition but with the safety switch system. If a problem with the safety switch system is identified after getting a spark, thoroughly inspect all switches and wires for proper functioning.
Pay particular attention to the ignition switch and electric PTO switch; a malfunction in these components could also lead to startup issues as they contain a safety switch circuit within them.
Disconnect any wires connected to the magneto (except for the spark plug wire), then turn over the motor to check for spark. Ensure that there is a .010 gap between the magnetos and flywheel magnets for proper operation.
- No Spark
This is one of the most widespread issues that Kohler V-twin engine owners have suffered from. If you’re experiencing a lack of spark from your engine, there could be various reasons behind it. Start by inspecting the condition and gap settings of the spark plug or plugs as they are often the culprit.
Damaged or worn-out spark plugs may require replacement to restore proper function. Additionally, examine the ignition system wiring for any signs of corrosion or damage that could impede power flow to the spark plug. Ensure all connections are secure and free from corrosion to prevent any spark issues.
In some instances, replacing the ignition coil may be necessary if it is damaged or worn out over time. Seek advice from a professional mechanic to ensure you select the correct replacement part for your engine if needed.
- Engine Overheating
Dealing with Kohler ignition coils can be a headache due to their tendency to overheat. When your engine gets too hot, it can cause a range of problems like decreased power, misfiring, and even complete engine shutdown. Thankfully, there are some straightforward fixes to prevent or address this issue.
To start with, ensuring proper lubrication is key in resolving an overheated Kohler engine. Insufficient lubrication can result in friction and increased heat buildup. Regularly check and use high-quality oil to keep things running smoothly. Alongside lubrication, maintaining adequate cooling for your engine is crucial.
Keep your radiator clear of any blockages and ensure the fan is functioning correctly. If needed, consider upgrading to a larger cooling fan or adding an external auxiliary fan for better temperature control.
Lastly, don’t forget about the condition of your Kohler ignition coil. Over time, these coils wear out or get damaged, affecting the engine’s performance. In such cases, replacing them with new ones is highly recommended to keep your engine running efficiently and reliably.
Troubleshooting and Fixing Kohler V-Twin Ignition Coil Problems
Troubleshooting Kohler V-twin ignition coil issues is not a big deal if you have the right knowledge. For this, you need a proper guideline. Here is the top-to-bottom guideline to get rid of ignition coil issues.
Inspect the Ignition Coil
To diagnose potential issues with your Kohler engine, start by examining the ignition coil if all other engine components are functioning well. Begin by disconnecting the ignition wires from the spark plug and activating the ignition switch.
Then, test for spark emission from the coil connection when the switch is on using a spark tester grounded to a metal surface. A lack of spark indicates a possible need for ignition coil replacement.
Additionally, inspect for corrosion or burn marks near wire connections as they may signal problems with coils or wiring. If problems persist, utilize a multimeter to measure the voltage at various points in the engine’s electrical system for further troubleshooting and efficient issue identification.
Check the Ignition Timing
If your Kohler engine is not producing sparks, it is likely due to an issue with the ignition timing. This process determines when the spark plugs ignite and the fuel injectors release fuel. To verify your engine’s ignition timing, you will require a timing light, a tool that attaches to the spark plug wire and measures the rotational speed of the crankshaft and piston movement.
If you do not have access to a timing light, there are alternative methods for diagnosing ignition timing problems such as checking for spark at the spark plug and inspecting for vacuum leaks in the carburetor.
Failure to adjust the ignition timing correctly on your Kohler engine may result in misfires or reduced performance. Fortunately, most DIY mechanics can handle this task independently with basic tools and knowledge about their specific engine. Consult your manual or seek assistance from a skilled mechanic if needed.
Replace the Ignition Coil
It’s time to swap out the ignition coil. Here’s a step-by-step guide on how to get it done. Some of the necessary tools are a screwdriver, new ignition coil, business card, or similar thin card. If you have managed all the necessary tools, follow the steps mentioned below:
- First, disconnect the spark plug wire Remove the wire from the spark plug. Take off the blower housing.
- Release the starter rope on the handle, unscrew, and remove the blower housing.
- Remove the old ignition coil and turn the flywheel magnet away from the ignition coil. Then, disconnect the stop wire, unscrew it, and remove the old ignition coil.
- Install new ignition coil Connect the new ignition coil, adjust the gap using a thin card, secure it with screws, and make sure the flywheel magnet pulls against it.
- After that, reinstall the blower housing. Put it back and secure the blower housing with screws and starter rope.
- Now, reconnect the spark plug wire. Attach the spark plug and pull the starter rope to test for spark. Your new ignition coil should be all set.
Final Words
Kohler V-Twin ignition coil problems can be a frustrating issue for owners of these engines. The symptoms of a faulty ignition coil, such as engine misfires or difficulty starting, should not be ignored and prompt action should be taken to address the problem.
Regular maintenance and inspections can help prevent ignition coil issues from arising in the first place. If you do encounter problems with your Kohler V-Twin ignition coil, it is recommended to seek professional assistance to diagnose and resolve the issue effectively. Remember, proper maintenance is key to ensuring the longevity and performance of your engine.
