Welcome to the North American Subaru Impreza Owners Club Tuesday November 13, 2018
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Go Back   NASIOC > NASIOC Technical > Service & Maintenance

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads. 
Thread Tools Display Modes
Old 12-21-2008, 09:56 PM   #1
Scooby Newbie
Member#: 135952
Join Date: Dec 2006
Chapter/Region: Tri-State
Location: New York
04 XTi

Default Changing spark plugs...need to change all 4?

My CEL came on and it was a misfire from cylinder 4. I want to change the spark plug to see if that is all I need to do. Can I buy just 1 spark plug that is a different brand than the others without it affecting anything? There are NGK's in my car right now.

jester696 is offline   Reply With Quote
Old 12-21-2008, 10:21 PM   #2
boost junkie
Top Scoob 009
Member#: 68273
Join Date: Aug 2004
Chapter/Region: MAIC
Location: IAG Performance
2012 WRX
GD Race Car


Just replace all of them, spark plugs are cheap.
boost junkie is offline   Reply With Quote
Old 12-21-2008, 10:45 PM   #3
Scooby Specialist
Member#: 155896
Join Date: Aug 2007
Chapter/Region: HIIC
Location: OaHu,HaWaIi
2006 WrX


Originally Posted by boost junkie View Post
Just replace all of them, spark plugs are cheap.

what he said..
rico_q808 is offline   Reply With Quote
Old 12-21-2008, 11:02 PM   #4
*** Banned ***
Member#: 132935
Join Date: Nov 2006
Chapter/Region: South East
Location: 8==)~~
02 rwx


could be the coil
beanbeanbean is offline   Reply With Quote
Old 12-22-2008, 12:02 AM   #5
Scooby Specialist
Member#: 51684
Join Date: Jan 2004
Location: CO

I would suggest reseating the connectors to the coilpacks first, then swap coilpacks and then spark plugs, if the previous steps dont help you track down the issue.
STIBungy is offline   Reply With Quote
Old 12-22-2008, 12:10 AM   #6
Scooby Specialist
Member#: 21392
Join Date: Jul 2002
Chapter/Region: Tri-State
2016 C63S AMG MB
Iridium /MB C300 4MATIC


while your at it do a compression test.
tekfoc is offline   Reply With Quote
Old 12-22-2008, 09:10 PM   #7
Scooby Specialist
Member#: 188654
Join Date: Sep 2008
Chapter/Region: SCIC
Location: So*Cal
99 2.5RS Coupe
TimeAttack DC #117


Compression checks do wonders and let you know what other cylinders are going down hill.. And don't just change one if anything uneven fireing can lead to worse things hahaha
Spitfire8o5 is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Do I need to replace all 4 tires? (Sort of urgent I guess) formula91 Tire & Wheel 9 12-17-2007 06:11 AM
Need to get all 4 wheels in the air for diff/tranny fluid changes? cMags Service & Maintenance 17 10-11-2007 06:35 PM
Need to replace all 4?? mars636 Tire & Wheel 3 09-08-2006 11:33 PM
in the process of priming turbo. do i need to unplug all 4 coil pack? VajraTLR Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 9 12-30-2005 10:05 PM
1 blown tire, do I need to replace all 4? Capt Crunch Tire & Wheel 17 06-06-2004 06:23 PM

All times are GMT -4. The time now is 02:29 AM.

Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2018 Axivo Inc.
Copyright ©1999 - 2017, North American Subaru Impreza Owners Club, Inc.