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Old 12-01-2007, 09:51 AM   #1
jmanSTI
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Member#: 108020
Join Date: Feb 2006
Chapter/Region: TXIC
Location: Austin, Texas
Vehicle:
2005 Impreza WRX STi
CGM - Stage 2

Default Anyone change spark plugs in an STi?

I am going to attempt this this weekend, I think.

Anything that I need to take into consideration specific to an STi above and beyond a few "generic" how-to posts that I have seen and picking up the proper tools?

If anyone is willing to lend a hand that would be cool too. I plan on doing this Sunday afternoon.

I am in Northwest Austin.

Thanks!
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Old 12-01-2007, 10:13 AM   #2
TJ
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Join Date: Aug 2003
Chapter/Region: TXIC
Location: Look MFer
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I'm on your lawn
do something about it

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you should be fine, changing plugs in the Legacy is WORSE!
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Old 12-01-2007, 10:24 AM   #3
Mighty E
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Member#: 152553
Join Date: Jun 2007
Chapter/Region: TXIC
Location: SATX
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2005 05 STI-Dom3
2006 B9 Tribeca Ltd.

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get TWO spark plug sockets....remove the rubber fitting from inside one.
use the one with the rubber fitting to remove the spark plugs (since the rubber will hold them in place & make it easier to pull them from their hole).

use the socket without the rubber fitting to install the new spark plugs. otherwise you're going to have a hard time pulling that socket off the spark plug with the 2.3" you have between the frame rail and the valve cover. the only other option is to find a ratchet which locks the socket/extension on and a locking extension too. (cheap spark plug socket from auto zone costs much less). otherwise it's not that bad. remove the air cleaner and move the windshield washer bottle outta the way.
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Old 12-01-2007, 10:35 AM   #4
Zoharid
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Join Date: Jun 2007
Chapter/Region: TXIC
Location: College Station, TX
Vehicle:
2002 WRX
1994 RX-7

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Mighty E's advice came in really handy for me.

Also I'd say use some sort of gloves to protect your poor knuckles from getting torn apart.
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Old 12-01-2007, 11:34 AM   #5
jmanSTI
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Join Date: Feb 2006
Chapter/Region: TXIC
Location: Austin, Texas
Vehicle:
2005 Impreza WRX STi
CGM - Stage 2

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Agreed.
Gloves are a must!
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Old 12-01-2007, 03:14 PM   #6
meld
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06 Evo IX / 04' R1
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I can lend a hand sunday afternoon, Pm me for details. I am in Austin
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Old 12-01-2007, 10:52 PM   #7
jmanSTI
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Join Date: Feb 2006
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Location: Austin, Texas
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2005 Impreza WRX STi
CGM - Stage 2

Default

Thanks Meld. I Pm'd you.

Anyone know where to find the replacement OEM NGK Plugs in Austin?
I tried 3 places today an no one had them in stock...... I was hoping to get them replaced for a tune at EngineLogics next Saturday.

Current plugs seem fine, just figured I may as well swap them out for the tune. Is it worth swapping in new ones if the exsting ones seem OK?

Thoughts?
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Old 12-01-2007, 11:23 PM   #8
Defiant Autospeed
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WRB

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Yeah if for some reason Meld isnt available, I should be.

I have another car I have to go fix asap though (long story self pwnage on my part basically) but that will likely be Monday at some point.
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Old 12-02-2007, 01:07 AM   #9
jmanSTI
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Chapter/Region: TXIC
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2005 Impreza WRX STi
CGM - Stage 2

Default

Thanks Defiant.....
Do you have the plugs in stock?
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Old 12-02-2007, 02:19 AM   #10
Defiant Autospeed
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WRB

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I dont
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Old 12-02-2007, 08:41 AM   #11
jmanSTI
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2005 Impreza WRX STi
CGM - Stage 2

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No worries.
Looks like I am going to wait and swap out the plugs later.
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Old 12-02-2007, 12:06 PM   #12
livnlegacy
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Chapter/Region: TXIC
Location: Cedar Park, TX, USA
Vehicle:
2017 WRX
anti-Launch edition

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I have some used (1k miles or less) NGK LFR7AIX #2309. These are the one-step colder iridiums for 05 LGT. Not sure if they are same for STi. I can also help with the install. About a 30-45 minute job, I've done a few and know some little tricks.
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Old 12-02-2007, 02:44 PM   #13
jmanSTI
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Join Date: Feb 2006
Chapter/Region: TXIC
Location: Austin, Texas
Vehicle:
2005 Impreza WRX STi
CGM - Stage 2

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OEM NGK are IFLR6B
One step colder for STi are LFR6AIX

Thanks for offering though. I may hit you up at a later date.
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Old 12-02-2007, 05:41 PM   #14
Scav1180
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Location: Torrance
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Old 12-02-2007, 11:47 PM   #15
jmanSTI
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Join Date: Feb 2006
Chapter/Region: TXIC
Location: Austin, Texas
Vehicle:
2005 Impreza WRX STi
CGM - Stage 2

Default

Word.

I missed that one. Thanks for the heads-up.
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