Gs46046

Hi
I have a problem in my 2008 gs460 with 86k.
There is a knocking sound+ lake of power
My car is USA Version and I am from middle east so the dealership will not receive my car

This is the video link so you can see and hear the sound
better to use headset it will be more clear.

http://sendvid.com/mqyqid7l

C1Forged

Is there a local mechanic shop that specializes in Lexus? That is your best bet, otherwise you might be stuck on your own.

Gs46046

Already inspected by A mechanical technician.He said that the sound come from the tappet valve.

Adviced to change the oil from 5w-30 to 5w-20.

ibidu1

iTrader: (1)

LMAO When I read knocking sound I for sure thought that engine was destroyed. You cant kill that engine that easily!

Where in the middle east are you in?

KevGS460ML

Mine made the exact same noise, but only when the engine is cold. I took it to a mechanic, and he topped off the oil, which got ride of the noise completely. He said that noise is the result of either low, or dirty oil. When I got it back, the oil level was way too high, so I don't think it was low to begin with. I changed the oil a couple days later with 5W-20 as I have been since the car was brand new. I haven't heard the noise since, which is about 2 months now. I have been keeping my eyes on the level, and it's right in between the low and high part of the dipstick. What really fixed it? I don't really know, but maybe because it was a little low on oil.

Gs46046

I am from oman

Gs46046

This sound come when the engine is warm.
During Oil change the mechanic used to put 9 Quarts

Gs46046

Gyus,

How can i know if my car had the valve spring recall done or not?

Stereorob

well that would be the first time ive heard of someone blowing up a lexus v8 w/o doing something crazy to it. glad its nothing major. the GS460 is a special car. very rare anywhere on the map. you may have the only one in your country.....

pbxcomm

I had the recall done on my Lexus, same sound .. I've come to the realization that this is one of the sound characteristics of this specific engine. This Clicking (or knock) comes and goes for no apparent reason and I've heard brand new, from the showroom engines, produce the exact same sound.
I have, however, changed my oil to 5W-30 Royal Purple and haven't heard it since (about 3000 miles).

So you can move on and enjoy this remarkable car..

Gs46046

Thanks alot

Fausty

With direct injection I've given up getting worried that I'm hearing a tick or noise. I came from a 4.6 mustang that I bent a rod on lol so I know what a knock or tick feels/sounds like. I've come to the conclusion that as long as I don't let my water pump fail or run the engine on low oil I should have a pretty solid engine for a long time to come. I have been on these forums for a while and have yet to see a thread pop up on a blown motor let alone on a 460 or 430 so it makes me sleep a little better at night lol.

designo

iTrader: (6)

Contact Lexus and tell them your local Lexus dealer will not take in your car. If you want help, I can ask Bahrain Lexus office to help you.

Fuel is so cheap here, most Lexus models are V8. GS460's are very common site here.

GS460 is EFI

ibidu1

iTrader: (1)

In the past I called Lexus about covering recalls or warranty issue of export my car to another country. Lexus US stated that any US vehicle will be repaired world wide, if the dealer refuses. You can pay for the services out of pocket and Lexus US will refund the money to you.

Fausty

are they all or is it just the middle eastern detuned version?