Youngle8

Just bought 2015 Lexus RCF about two months ago and noticed a cricket sound coming from the engine. I brought it back to the dealership since it is still under warranty. They said the sound is normal and it's coming from high pressure fuel pumps. Is it true and normal? Is there a way to reduce or fix the noise? Do you guys encounter this sound on your RCF?

GetKinetic

Im not sure I have any crickets in my engine. But the fuel pumps are located under the back seats

Suburbazin

There's a quiet chirping noise from the HPI pumps. Not the low pressure pumps under the seat. If you go to any other quiet, HPI car and listen, you'll hear the injection pump(s) squeak a bit. It's only a measly 2500-3000psi though.

If you want to hear something louder, try a direct injected diesel running 30,000psi on the rail.

Pro tip: Never ever ever put your body near a high pressure fuel rail during operation. A pinhole leak can slice you open like a fresh fish.

Youngle8

lol. what i meant was a chirping noise (to me it sounds like a cricket sound).

Youngle8

Thanks Suburbazin: i guess it's normal?

ROK

normallllll