The Kawasaki Concours, particularly the C10 and C14 models, has earned a reputation as a reliable and capable sport-touring motorcycle. However, like any machine, it's not without its quirks and potential issues. Understanding these common problems can help prospective buyers make informed decisions and current owners troubleshoot issues effectively, ensuring many happy miles on the road.

Known Issues with the Kawasaki Concours (C10 and C14): A Deep Dive

Let's break down some of the more frequent issues experienced by Concours riders, covering both the older C10 and the newer C14 models. We’ll look at the symptoms, potential causes, and possible solutions.

C10 Concerns: The Classic's Quirks

The C10, produced from 1986 to 2006, is a robust machine, but its age means certain issues are more prevalent.

  • Fuel System Woes: Carburetors are fantastic when they're working right, but finicky when they're not. The C10's carburetors can suffer from clogged jets, deteriorated diaphragms, and vacuum leaks. Symptoms include poor idling, hesitation during acceleration, and overall rough running. Regular use of fuel stabilizer, especially during off-season storage, can help prevent these problems. A thorough carburetor cleaning or rebuild might be necessary to resolve persistent issues. Also, ensure all vacuum lines are in good condition and properly connected.

  • Charging System Challenges: Older motorcycles often struggle with charging systems. The C10 is no exception. Failing rectifiers, stators, and even corroded wiring connections can lead to a dead battery and stranded riders. Regularly check the battery voltage and charging output with a multimeter. A failing rectifier often presents with fluctuating voltage readings. Upgrading to a modern MOSFET rectifier can significantly improve reliability. Clean and inspect all wiring connections related to the charging system.

  • Cooling System Headaches: Overheating can seriously damage any engine. The C10's cooling system, while generally reliable, can suffer from clogged radiators, failing thermostats, and leaky hoses. Regularly flush the cooling system with fresh coolant. Inspect the radiator fins for debris and clean them as needed. Ensure the thermostat is functioning correctly by checking for proper engine temperature regulation. Replace any cracked or brittle hoses.

  • Fork Issues: Over time, the fork seals on the C10 can fail, leading to leaking fork oil and diminished handling performance. Replacing the fork seals and oil is a relatively straightforward task for a competent DIY mechanic. Consider upgrading to progressive fork springs for improved ride quality and handling.

  • Rear Brake Drag: Some C10 owners experience rear brake drag, often caused by corrosion or sticking pistons in the rear brake caliper. Regularly cleaning and lubricating the caliper pistons can help prevent this issue. A complete caliper rebuild might be necessary in severe cases.

C14 Conundrums: Modern Problems

The Concours 14 (also known as the 1400GTR), produced from 2008 onwards, is a more technologically advanced motorcycle, but it introduces its own set of potential problems.

  • Throttle Position Sensor (TPS) Troubles: The TPS on the C14 can sometimes fail, leading to erratic throttle response, hesitation, and even engine stalling. Symptoms can mimic carburetor issues on older bikes. A faulty TPS will often trigger a fault code. Replacing the TPS is the usual solution. Make sure to properly calibrate the new TPS according to the service manual.

  • Exhaust Valve Actuator (EVA) Issues: The EVA controls a valve in the exhaust system designed to improve low-end torque. It can become stuck or malfunction due to corrosion or debris, leading to a loss of performance or a fault code. Cleaning and lubricating the EVA mechanism can sometimes resolve the issue. Replacement might be necessary in persistent cases. Some riders choose to bypass the EVA system altogether.

  • Clutch Basket Noise: The C14 clutch basket is known to develop a rattling noise, particularly at idle. This is often considered a normal characteristic of the bike and doesn't necessarily indicate a serious problem. However, excessive noise or vibration could indicate wear and warrant inspection.

  • Secondary Air System (SAS) Problems: The SAS injects air into the exhaust to reduce emissions. It can sometimes cause popping on deceleration or contribute to exhaust leaks. Some riders choose to disable or remove the SAS system.

  • Fuel Pump Failure: While not extremely common, the fuel pump on the C14 can fail, leading to fuel starvation and engine stalling. Symptoms often include difficulty starting or sudden loss of power. Replacing the fuel pump is the usual solution. Consider replacing the fuel filter at the same time.

  • ABS Issues: The ABS system on the C14 is generally reliable, but like any complex electronic system, it can experience problems. Faulty ABS sensors, low battery voltage, or air in the brake lines can trigger ABS warning lights or disable the system. Check the ABS sensor connections and clean them if necessary. Ensure the battery is in good condition. Bleed the brake lines to remove any air.

  • Fairing Buzzing/Vibration: Many C14 owners experience buzzing or vibration from the fairing, particularly at certain RPMs. This is often due to loose fasteners or resonance. Carefully inspect all fairing fasteners and tighten them as needed. Adding foam padding or rubber washers can help dampen vibrations.

General Concours Issues (C10 and C14)

Some problems can affect both the C10 and C14 models, although the specific causes and solutions might differ.

  • Electrical Connection Corrosion: Motorcycles are exposed to the elements, and electrical connections are particularly vulnerable to corrosion. Corroded connections can cause a wide range of problems, from intermittent starting issues to malfunctioning lights. Regularly inspect and clean all electrical connections with a contact cleaner. Apply dielectric grease to prevent future corrosion.

  • Tire Wear: Tire wear is a general issue on any motorcycle. However, the Concours, due to its weight and touring capabilities, can be particularly demanding on tires. Uneven tire wear, cupping, and premature wear are common. Regularly check tire pressure and tread depth. Ensure the suspension is properly adjusted for your weight and riding style. Consider using tires specifically designed for sport-touring motorcycles.

  • Chain Maintenance (if applicable): The C10 and some C14 models use a chain final drive, requiring regular maintenance. Neglecting chain lubrication and adjustment can lead to premature wear, noise, and even chain breakage. Clean and lubricate the chain regularly. Adjust the chain slack according to the service manual. Replace the chain and sprockets as a set when they show signs of wear.

Prevention is Key: Keeping Your Concours Happy

Many of these problems can be prevented or mitigated with regular maintenance and proper care.

  • Regular Maintenance: Follow the manufacturer's recommended maintenance schedule. This includes oil changes, filter replacements, spark plug checks, valve adjustments, and more.

  • Proper Storage: If you're storing your Concours for an extended period, take the necessary precautions to prevent problems. This includes using a fuel stabilizer, disconnecting the battery, and storing the bike in a dry, protected area.

  • Careful Riding: Avoid aggressive riding and excessive wear and tear. Smooth acceleration and braking can help prolong the life of your motorcycle.

  • Early Detection: Pay attention to any unusual noises, vibrations, or performance changes. Addressing problems early can prevent them from escalating into more serious and costly issues.

Frequently Asked Questions

  • Why is my Concours C10 hard to start when cold? This is often due to the carburetors needing adjustment or cleaning, or the choke not functioning correctly. Ensure the choke is fully engaged and the carburetors are properly synchronized.

  • Why is my Concours 14 making a rattling noise at idle? This is a common characteristic of the C14's clutch basket and is often considered normal. However, excessive noise warrants further inspection.

  • My Concours ABS light is on. What should I do? First, check your brake fluid level and battery voltage. If those are okay, have the ABS system professionally diagnosed.

  • How often should I change the oil on my Concours? Refer to your owner's manual, but generally, every 3,000-6,000 miles is recommended. Using a high-quality synthetic oil is always a good idea.

  • My Concours is overheating. What could be the cause? Check the coolant level, radiator for obstructions, and thermostat functionality. A failing water pump could also be the culprit.

In conclusion, while the Kawasaki Concours can experience certain problems, understanding these issues and practicing preventative maintenance can ensure many years of reliable and enjoyable riding. Regular check-ups and proactive care will keep your sport touring machine in top condition.