bladest

Hi i know that most japanese cars like ACURA/honda needs very often to have
Vehicle service -Engine valves adjusted, is it same story with lexus gs450h engine hybrid please go on tell me ? And how often this procedure should be done or its not needed at all even after 200.000miles.

LeX2K

There is no scheduled maintenance for valve clearance adjustment normally they stay in spec for the life of the engine. Honda has (or had) the ancient screw and nut adjuster for many years even on their high performance engines it's a royal pain to deal with.

bladest

Is this for every lexus gs even the lexus gs 350 non hybird petrol engine?

So if valve adjustment is never made for LEXUS GS 450H the engine wont fail i am asking because my car is probably 350.000miles at least or more and i am missing service history so this was probably never done so i dont know if i need to perform such maintenace in order to avoid critial or big failure... or future issues.

LeX2K

I don't know much about the GR series of engines in a relative sense since I've never torn into one or rebuilt one. From what I understand the engine has roller rocker arms and a hydraulic adjuster which via oil pressure keeps the proper clearance. The hybrid vs non GR engine is largely the same valvetrain is probably exactly the same or nearly so.

Either way there is nothing to do in respect to "valve adjustment" keep up on oil changes and you're good.

Im2bz2p345

Just curious, do you own a 4th generation (2013+) GS450h? Can you share details about your car and share some photos @bladest ? I don't think anyone in this community has a 4th generation GS with 350K miles! That's some serious driving done on the car.

~ im2bz2p345

bladest

i sended you a pm with pictures. car is high milleage import from italy.

Im2bz2p345

The vehicle you send me details on is for sale (not "your car") has only 90K miles, so far from the 350K miles mentioned in your post.

Regards,

~ im2bz2p345

bladest

i have been personally looking into the car and it was 90 ,000miles in year 2015 , no service car history since then , via web site service checks and other things they gave result 350,000miles approximately at least in Europe and in Bg they clock cars a lot, so they return miles as much as they can.

peasodos

iTrader: (1)

I tried once on a 1998 Honda Accord with a feeler gauge, no idea what to feel for lol, and no idea if it made a difference afterwards.Terrible design, glad modern engines have valves that are self-adjusting and you never have to mess around with it.

bladest

Thats great Lexus is rock solid, hope so

bclexus

I love the sound of a big block Chevy L78 with solid lifters on a high lift, aggressive lope camshaft, but they needed adjusting from time-to-time.

Nothing like getting hot oil all over your hands and smelling burning oil smoke from the oil splashing on the tube headers with the valve covers off.