[javiermaldonado_16]

Originally Posted by humfrz

HELLO @Javiermaldonado, and WELCOME to The Forum ..... and FR-S ownership ......

Your car (before and after) sounds to me like a running FR-S engine with direct injection and a HPFP (High Pressure Fuel Pump).

I'd suggest you get used to it ...... that's just the way it is.

Some folks keep changing fuel pumps, some folks add "snake oil" to the gas tank, some keep switching gas/stations ...... many of us just get on with the fun driving experience.

Why does it make a "chirping" sound .. ?? Because it is a very high pressure, mechanically driven, piston type pump. Why? Because it has to overcome the high pressures in the combustion chambers to squirt the gasoline in.

So, when your friends ask ...... what is that sound ? ...... you could just tell some of them that this high performance engine, with 12:1 compression ratio, has TWO fuel injection systems, one of them a DIRECT injection system ..... thus creating the very high performance .....




humfrz

Thank you so much for this reassurance one of the guys from the dealership told me that awhile ago they had a problem because of the high pressure but because I went there about six times I didn't want to go back another time but now that I know the current sound of my FR-S is normal I'm satisfied to know!