SOUND HELP FROM 307 XS ENGINE

One month ago, I was standing in the convoy, I was just standing in 1st gear, the road was locked, I noticed that there was a fine purring coming from the engine, but not continuously, then 2 weeks ago, it started to be heard more clearly and yesterday evening, I noticed that the hand indicator 20 ' When he was making a sound when he was under a scratch, when he fell or went up, there was no sound, I just took it to the service, I said, but I said not, but they said we should look at it from the bottom of the engine. One of my relatives showed the WV service to him, the room said the same thing, it would be a problem to use it in this way. if anyone understands the essence of the job

I bought the car 3 months ago, is very new :)