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Old 12-16-14, 12:29 PM
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Spark Plug Change for GS300

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Old 04-22-04, 08:27 AM   #16
redjeeper
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varcity, I just cleaned the engine this weekend when I waxed the car. I'll see if I can post a pic of me eating off of it.
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Old 04-30-04, 10:01 PM   #17
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Post Lexus Repair Manual Spark Plug Instruction Sheet

Here is the Lexus Repair manual pages for the Ignition System/Spark Plug overview...
Hope this helps.
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Old 05-06-04, 06:42 AM   #18
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Nice job Red....Can you post a DIY on changing the transmission fluid.
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Old 05-18-04, 10:27 PM   #19
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Old 09-20-04, 05:05 PM   #20
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Lightbulb TIP

Just did it this past weekend. Use compress air to blow out dirt or anything else around the plugs BEFORE removing it. You don't want anything falling into the combustion chambers when you put the new plugs back in, especially those of us driving in dusty places.
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Old 09-20-04, 08:17 PM   #21
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Question iridium for 300?

You said you replaced the stock with denso iridium plugs. Are those iridium plugs twin ground electrode plugs? If so what is the part number? The manual specifically says to use only twin ground electrode plugs and I didn't know that denso has iridium plugs with twin electrodes.

Thanks.
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Old 09-20-04, 10:07 PM   #22
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I used the Denso Iridium IK16(.4mm tip). The OEM plug I took out is Denso SK16R-P11 (also section 6-2 of the owners manual). Got mine for $8.5/each PM me for info, don't have it on me now. So far, it's working well. Feels like there is a little more power, but could just all be in my head . Also did clean out the OE air filter the quick way by taping the dirty side of the filter. Lotta dirt fell out.
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Old 09-21-04, 08:23 PM   #23
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Question

ntran18
what year is your gs300? I have a 1999 gs300 and the stock plug is either Denso SK20R11 or NGK IFR6A11

Is IK16 twin electrode?
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Old 09-22-04, 12:27 AM   #24
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Mine is 01 GS3. I don't know about twin electrodes, but those parts are for a GS4. Go down another 2 pages in your manual for the plugs for the GS3. Here is the Denso decoder: http://www.densoiridium.com/identifyplugs.htm
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Old 10-12-04, 12:42 PM   #25
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Did it make a difference in the performance.
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Old 01-31-05, 10:21 PM   #26
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New Torquemaster site...

http://www.extremespark.com

Mine have been going STRONG for 90k miles. Try that with Denso!

Percy
111k on GS400.
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Old 04-19-05, 07:04 PM   #27
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Great post I can really use this once I decide which plugs to go with. Anybody try out the Torquemasters in a GS300?
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Old 04-29-05, 06:18 PM   #28
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Quote:
Originally Posted by redjeeper
I've got about 73,000 on my GS but it came with NGK plugs instead on the Denso's.
straight from the toyota/lexus, it will come with ngk, but when you order it through the dealer as oem replacement, they will come with the denso....
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Old 04-29-05, 06:37 PM   #29
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Is yours a GS4 or GS3? Mine came with the Denso Iridiums out of the box. (GS4)

Percy
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Old 04-29-05, 06:40 PM   #30
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It should work out nicely. I just replaced the plugs (iridium crap) out of my brothers G35x with the Torquemasters. Geez that thing revs!!! He notices quite a bit of difference and picked up a couple of mpg as an added bonus.

Glad most of the G35 guys don't know about the plug...it would be a deadly weapon against the GS.

Percy

Quote:
Originally Posted by Lexizm
Great post I can really use this once I decide which plugs to go with. Anybody try out the Torquemasters in a GS300?
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