I'm thinking of buying a used 2015 Micra with manual trans and 145k km.
At the end of my test drive, while re-entering the person's driveway, I noticed a slight "knock" sound from the engine at low rpm, sort of like a "Tok, Tok, tok". Have no idea what causes this, but it's as if one of the four cylinders was hitting the top part of the cylinder at each go around.
It's not a loud sound and I'm even wondering if it's caused by something completely different than a piston knock or if it's even just a normal sound of this engine at low rpm ?
I haven't bought the car, but just wondering if anyone here has an idea what this sound is caused by and if it's of concern...??
I will of course take to a Nissan dealer to have it checked out if I decide to buy it, but just wondering if it's a common problem before spending money on a full check-up at the dealer.
Thanks for any ideas or suggestions !