If you notice abnormal noise coming from the engine of your KTM 200 after washing the bike, there could be a few potential reasons for this:
Water ingress: Water might have entered areas where it shouldn't, such as the air intake, exhaust, or electrical components. This can cause temporary disruptions and result in abnormal noises. Ensure that you didn't directly spray high-pressure water into sensitive areas, and check if any water has accumulated in critical parts.
Moisture in spark plug area: Water can seep into the spark plug area, affecting the ignition process and causing misfiring or unusual sounds. Remove the spark plug, dry the area thoroughly, and check for any signs of moisture or corrosion. Consider replacing the spark plug if necessary.
Loose components: The washing process might have loosened or dislodged certain components, such as the fairings, exhaust pipes, or engine covers. Loose components can create rattling or vibrating sounds. Inspect these areas and ensure that all fasteners are tightened securely.
Belt or chain tension: If your KTM 200 is belt-driven or chain-driven, water exposure could affect the tension and lubrication. Improper tension or lack of lubrication can result in noise coming from the drive system. Check the tension and lubrication of the belt or chain according to the manufacturer's guidelines.
Corrosion or rust: If water is not properly dried off after washing, it can lead to corrosion or rust formation on metal components. Corrosion can cause friction and generate abnormal noises. Carefully inspect the engine and other metal parts for any signs of corrosion and address it promptly.
It is recommended to thoroughly dry your motorcycle after washing, paying attention to areas prone to water ingress. If the noise persists or you are unsure about the source of the noise, it is advisable to consult a qualified mechanic or authorized service center for a professional inspection and diagnosis. They will be able to identify the issue accurately and provide the necessary repairs or adjustments.