Dec 16, 2014, 12:29 PM
Last edit by: IB Advertising
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Browse all: Lexus IS Engine and Powertrain Guides
- Lexus IS GS: How to Replace Spark Plugs
Step by step instructions for do-it-yourself repairs
Browse all: Lexus IS Engine and Powertrain Guides
Spark Plug Change for GS300
Joined: Jul 2002
Posts: 9,859
Likes: 12
From: Waipahu, Waikele, HI
Originally Posted by Percy
New Torquemaster site...
http://www.extremespark.com
Mine have been going STRONG for 90k miles. Try that with Denso!
Percy
111k on GS400.
http://www.extremespark.com
Mine have been going STRONG for 90k miles. Try that with Denso!
Percy
111k on GS400.
tm plugs
I just installed my tm plugs in last night on my 98 gs3 and im happy, it took a while but it was well worth the time. I can feel the difference. It maybe because i reset my ecu for about 2hrs and cleaned the throttle body while it was apart.
Great write up brother. The first time I replaced my spark plugs was about 2 years go and I took everything off I mean everything and even after I did I only counted 3 spark plugs and wasn't aware that the other 3 were underneath all the caps and wires, so it took my like 4-5 hours. I just changed mines today and It took me about an hour and 15 mins or so. Not bad.
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Exactly what do you mean; isn't your setup the same as in the pics just with the engine cover? You have to remove the 'coil packs' to get to the spark plugs. Just get you spark plug socket down in the opening and rachet away.
Man, I hate replacing the plugs. It's such a bee-otch lol. I just did mine a few days ago and it was pretty tiring. It's really not hard, but just takes a lot of time and patitence. The worst part of this is that the plugs I'm using now only last 10K miles between changes! Oh well, you gotta compromise when you go boost 
Pole Position
Joined: Jul 2002
Posts: 309
Likes: 0
From: Texas
Which plugs???
I just called a local Lexus shop in Houston and were given info that the stock spark plugs for a 1998 GS 300 are dual electrode platinum plugs. Denso PK16TR11. So can I change to iridium spark plugs? If so, what are the part number for those iridium plugs? Thanks.
John
John
Pole Position
Joined: Jul 2002
Posts: 309
Likes: 0
From: Texas
??