yammy

iTrader: (4)

Just wondering, what's cam rattle? Is it the rattle you hear when changing the transmission from
park to drive?

2GSKaizen

iTrader: (1)

Cam rattle is just the noise that is associated with a chain driven camshafts (ie the GR series motors in the 06-and up IS 250's and 350's). The IS 300's from 05-and previous used the JZ inline six which had a belt driven cam. Metal chains make more noise as they spin on metal gears then a rubber belt did. Those 2.5's and 3.5"s are just "louder" motors, but it's nothing to lose sleep over.

tex2670

If you hear it every morning, they will take it the night before, give you a loaner, and start it up cold the next morning.

blklexo818

iTrader: (1)

no, has nothing to do w/ the transmission lol.

it happens when you start your car after the motors been cooled off. it's like a grinding sound coming from the motor..


i had mine fixed sometime last year..they gave me a gs350 fsport for a few days so ***** i wasn't complaining lol.

Gville350

iTrader: (10)

If this is indeed what it is...that is exactly what I've been saying that it was. Poor oil lube at start-up. Chalk another one for me! LOL

CA07GS350

https://www.clublexus.com/forums/gs-...e-start-8.html

I've posted some helpful things on here. If you like them please reply!! Thanks.

tonnetje

iam joing the club to
but no waranty for me
i start to use to it but i hate the sound
sometimes once a month sometimes twice a week
next oil change i put th redline 5w30 in it
mayby it wil fix the horrible sound

maniacbob

iTrader: (1)

All I know is that when I use Castrol Full Synthetic, I don't hear it anymore. It's only when I use other oil like Mobil 1, royal purple, or eneos. I could be wrong and It could all just be a coincidence, but I've switched it from Castrol to Mobil back to Castrol and only time I hear the rattle is when I'm not using Castrol.

Tapangb

They had my car for about a week also. I've had mine fixed twice already and my mileage is only 18k on my 2009 IS 350.