BGG

iTrader: (1)

Just wanted to give you guys a glimpse of what my spark plugs and throttle body looked like at 60k. I can't see these being good for another 30k like some may claim.

LexmexVIP

iTrader: (1)

I need to do that in about 800 miles. Thanks for posting.

AudioBob

I just did my plugs a couple of weeks ago and it took just about an hour in total. Mine had about 90,000 on them and the electrodes were getting pretty worn. My gas mileage was still decent and the car idled smooth, but they were definitely nearing the end.

anthrax144

Did you actually remove the throttle body? What did you use to clean it?

SoCal_450h

iTrader: (14)

^^ I would like to know too.....if you removed the throttle body, how hard to remove? do you need to replace the gasket as well? what did you used to clean the throttle / butterfly??

alchemist

iTrader: (1)

about how my plugs looked at 80k. good work on the TB - brake cleaner and toothbrush?

alchemist

iTrader: (1)

Nice epoxy floor BTW

Any more pics of garage?

BGG

iTrader: (1)

I just used throttle body cleaner, toothbrush and a microfiber. Be very careful bc the flap is controlled electronically so you don't want to force it open too much. As for the job. Took about 15 minutes or so. The throttle body is just held on with 4 screws. Just need to undo whatever system you have in place for an air filter .

As for the garage floor. It's SW armorseal 1000

Customer of mines car

c-low

iTrader: (1)

lol nice garage that is lol ill be needing to change my plugs soon

GS350Lexus

iTrader: (5)

I am still wondering if cleaning throttle body actually does something for the car!!!!! I read a lot and basically it states that if it TOO DIRTY which I doubt any GS350 is that dirty, it won't open correctly cause the car to stall and ruff idle. Have you noticed any improvements?

Chaos236

iTrader: (1)

Mine, also did throttle body

gsssss

I plan on doing my spark plugs soon. Is the silver engine cover held on by clips?

AudioBob

Yes, it pops right off. Just pull it up.

hacker_720

I just changed my plugs on my GS450h at 120,000km (75,000mi) and my TB looks like your second TB picture. It was very strange but it's completely clean. I also noticed a couple vacuum nipples were blocked off. So maybe the hybrid system is different? No crankcase vent?

morganc

The GS450h actually has two vent lines. The first one has a PCV valve in it and is located at the right rear of the engine, tucked under the intake plenum. This particular vent line (which is the oiliest) dumps in *after* the throttle butterfly.

The secondary vent line doesn't do too much and has many baffles in the way to avoid a lot of oil transport into the intake system. The throttle butterflies in the 450h's typically stay cleaner than the 300's and 350's. The top of my intake manifold, however, was oily as anything when I pulled it off (same with the plenum).