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View Full Version : HOW TO: Change your Sparkplugs



trinydex
10-08-2007, 09:13 PM
Be sure to read though before starting, to make sure you have all the necessary tools to complete it.

notes
- when tightening the spark plug use a torque of 25 Nm or 18 ft-lb
now i just retighten the new plugs to about the same feel as the old ones, because i didnt have a torque wrench. i have had not had any problems
- a spark plug socket would be nice and easy, but not necessary

Step 1:
disconnect battery using a 10mm wrench or socket. -always a good idea to remove power while working on the engine. plus once you are done, reconnecting the battery will reset the ecu. w/ fresh plugs in.
http://www.socalevo.net/gallery/albums/userpics/10991/Change%20Spark%20Plugs_01.jpg




Step 2:
remove engine plug cover. use a phillips head screwdriver or a 10mm socket
http://www.socalevo.net/gallery/albums/userpics/10991/Change%20Spark%20Plugs_02.jpg

http://www.socalevo.net/gallery/albums/userpics/10991/Change%20Spark%20Plugs_03.jpg

http://www.socalevo.net/gallery/albums/userpics/10991/Change%20Spark%20Plugs_04.jpg

http://www.socalevo.net/gallery/albums/userpics/10991/Change%20Spark%20Plugs_05.jpg




Step 3:
remove spark plug wires and unplug wire harness - use a 10mm socket to remove the 3 screws on the plug
note: the plug wires are set in good. meaning its gonna take some effort / pull to get the wires out. dont be afraid - yank on them

http://www.socalevo.net/gallery/albums/userpics/10991/Change%20Spark%20Plugs_06.jpg

http://www.socalevo.net/gallery/albums/userpics/10991/Change%20Spark%20Plugs_07.jpg

http://www.socalevo.net/gallery/albums/userpics/10991/Change%20Spark%20Plugs_08.jpg

http://www.socalevo.net/gallery/albums/userpics/10991/Change%20Spark%20Plugs_09.jpg

http://www.socalevo.net/gallery/albums/userpics/10991/Change%20Spark%20Plugs_10.jpg

http://www.socalevo.net/gallery/albums/userpics/10991/Change%20Spark%20Plugs_11.jpg


after plug wire removal you can see the spark plugs set deep in the engine block

http://www.socalevo.net/gallery/albums/userpics/10991/Change%20Spark%20Plugs_12.jpg




Step 4:
you will need a deep set socket with extension to reach the spark plug in its location. i used size 13/16 deep well socket to reach and unscrew the plug.

http://www.socalevo.net/gallery/albums/userpics/10991/Change%20Spark%20Plugs_13.jpg
http://www.socalevo.net/gallery/albums/userpics/10991/Change%20Spark%20Plugs_14.jpg

http://www.socalevo.net/gallery/albums/userpics/10991/Change%20Spark%20Plugs_15.jpg


you can use this weird looking thing in bototm picture, or some source of magnetic stick. Or if you get an specific sparkplug socket than you don't need any of this because that socket will have an ruber thingy inside to grab the spark plug O0

http://www.socalevo.net/gallery/albums/userpics/10991/Change%20Spark%20Plugs_16.jpg
http://www.socalevo.net/gallery/albums/userpics/10991/Change%20Spark%20Plugs_17.jpg




Step 5:
replace your old spark plugs with new ones
i have read that its recommended to replace your spark plugs every 6 months if you run your car hard. i used the cheap, but effective NGK BPR7ES as easy replacement


http://www.socalevo.net/gallery/albums/userpics/10991/Change%20Spark%20Plugs_19.jpg




Step 6:
put everything back together, reconnect battery and feel the difference. it amazes me the simple changes that you can do to this vehicle to see or feel it running

torque your plugs (recommended) 25 nm or 18 ft-lb

dizhungryguy
10-08-2007, 10:07 PM
what will be a good replacement i havent change my spark plugs and its been almost 2 years

trinydex
11-30-2007, 07:25 PM
for evo 8

BPR7ES is copper

BPR7IX is iridium

earlyapex aka jack ass
11-30-2007, 08:01 PM
Also remember you can't use BPR7ES/8ES/9ES on Evo 9's. Or any plugs designed for the Evo 8.

trinydex
11-30-2007, 08:03 PM
yar made a note in my initial entry. you gotta use 9 plugs for 9s. pft... f 9s :P

player67
12-01-2007, 01:42 AM
yar made a note in my initial entry. you gotta use 9 plugs for 9s. pft... f 9s :P


Thats whatchall say...

Nsin
12-02-2007, 04:39 PM
what will be a good replacement i havent change my spark plugs and its been almost 2 years

its about that time, sooner than later i say. Btw, what movie is that jessica alba sig from?

joshesh
12-02-2007, 06:01 PM
could someone list the correct plugs for the 9 on here too please. Thanks

earlyapex aka jack ass
12-02-2007, 06:46 PM
could someone list the correct plugs for the 9 on here too please. Thanks


Already here:

http://www.norcalevo.net/forum/index.php/topic,20752.msg314795.html#msg314795

:)

trinydex
12-02-2007, 09:51 PM
what will be a good replacement i havent change my spark plugs and its been almost 2 years

its about that time, sooner than later i say. Btw, what movie is that jessica alba sig from?
good luck chuck

kaesem
02-14-2009, 10:32 AM
Thanks for the info on correct plugs for IX's.