The "tik tik" sound you're hearing from your Royal Enfield Classic 350's engine could be due to several factors. It's challenging to determine the exact cause without a thorough inspection, but here are a few common possibilities:
Valve Clearance: One potential cause of the sound could be incorrect valve clearance. The valves may need adjustment, and this should be done by a skilled mechanic according to the manufacturer's specifications.
Tappet Noise: The tappets, which are part of the valve mechanism, could be making the noise. Adjusting the tappets to the correct clearance may help reduce or eliminate the sound.
Cam Chain Tensioner: The cam chain tensioner might be loose or worn, causing it to make a ticking sound. If this is the case, it may need to be replaced.
Engine Oil: Inadequate or incorrect engine oil can also contribute to engine noise. Ensure you are using the recommended grade and change the oil at the recommended intervals.
Other Mechanical Issues: There could be other mechanical issues causing the noise, such as a faulty component or worn-out part. It's best to have a qualified mechanic inspect the bike to identify the exact source of the sound.
To address the "tik tik" sound, it is advisable to take your motorcycle to an authorized Royal Enfield service center or a trusted mechanic with experience working on Royal Enfield motorcycles. They can diagnose the issue accurately and recommend the appropriate solution to resolve the noise.
While it may not be possible to completely eliminate the sound, addressing the underlying cause should help minimize it to a more acceptable level.