Sir , I really need your help please. I travelled from Islamabad to Lahore through motorway a couple of days ago. In next morning at Lahore when I started my car, a strange noise came from engine, like some thing broken piece of mettle or marble is inside engine, and it's rattling right and left and striking against the inside walls of engine. I went to Honda pit shop at Dha, but enroute when the motor got warmed up, the sound disappeared. I showed the car to tech at Honda, but no sound. Then I waited to cool down the motor. Then again the sound appeared.
Tech checked every thing including plugs, tapets, timing belt etc but no cause was found.
Consequently, he said that apparently every thing is OK, and engine head might be opened to detect further.
Now, I concluded:
The sound occurs when car is cold.
When sound occurs the engine vibrates and loose power slightly.
When it gets warm up, no noise, it drives smooth, pick is excellent.
Sir, I am really troubled. Day after tomorrow I will be going back to Islamabad. Please help me and advise me what to do.
Anxiously waiting for expert opinion.