Hey guys when i start my car up from cold it makes tapping noises which are easily heard, they sound more promenant inside the car for some reason. anyway it sounds to me like the valve clearances might be off, is this what causes the tapping sounds, my car is a 96 civic with a d16y4 engine.
the tapping noises seam to happen around 1000-2000 rpm range mainly which is where my car idles when cold, and it sounds to be coming from the head. the tapping noises are not as loud when the engine is warm. the car has 160,000kms on it and i dont know if valve clearances have ever been adjusted.
my honda mechanic told me they didnt need checking and the tapping rattling noises were because the pistons dont fit well inside the engine properly until the engine is warm causing these noises but i've never heard engines make these noises unless something is wrong.
is there anything else that might need attention or is valve clearance the most likely cause?
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