How to change spark plugs?
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Joined: Nov 2002
Posts: 206
From: Milpitas, CA
Car Info: Aspen White GDA
How to change spark plugs?
The title says all about it.....
I tried to change them but the engine block is too deep. I just wonder what kind of tools one would need? Or.......do you simply have to up the engine to change?
I tried to change them but the engine block is too deep. I just wonder what kind of tools one would need? Or.......do you simply have to up the engine to change?
Registered User
Joined: Nov 2002
Posts: 1,780
From: San Diego
Car Info: Boosted Geo Prizm
Is this a wrx?
If so you need to remove the battery, windshield resevior, and intake box to make things easier.
You'll also need a long extension a universal joint and a spark plug socket. For me I remove the rubber thingy in the socket it makes things easier for me.
If so you need to remove the battery, windshield resevior, and intake box to make things easier.
You'll also need a long extension a universal joint and a spark plug socket. For me I remove the rubber thingy in the socket it makes things easier for me.
Pr0n King
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From: The Land of Rocks
Car Info: Turncoat Turbo
My rear driver's side plug is a REAL bear - I had to bend an a/c line slightly out of the way for the plug to come out...
Not a fun job, but not impossible either.
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Not a fun job, but not impossible either.
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Changing the plugs is not that hard ... I use a deep well socket with a flex joint betweent the deep well and the wrench.
Remove the washer fluid box ... and if you have the stock intake remove that. I have an aftermarket intake and dont have to remove it. I can squeeze my arm down there with out too much pain
its a task that takes a few ... not as easy as other cars thats for sure ...
Remove the washer fluid box ... and if you have the stock intake remove that. I have an aftermarket intake and dont have to remove it. I can squeeze my arm down there with out too much pain
its a task that takes a few ... not as easy as other cars thats for sure ...
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From: Lawrence, Kansas
Car Info: 19' Impreza Sport Manual / 99 Miata / 13' OB
Registered User
iTrader: (2)
Joined: Nov 2002
Posts: 1,644
From: Lawrence, Kansas
Car Info: 19' Impreza Sport Manual / 99 Miata / 13' OB
The plugs we use in the Subaru have a crush washer. If you look on the box the plugs came in I think they say to tighten them 3/4 of a turn more after they get seated. In all honesty it's almost impossible to get a torque wrench in there . However that was a good guess, the touque is 15 ft/ lbs.
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Joined: Feb 2003
Posts: 568
From: busy writing log of best roads in CA.
Car Info: 2002 WRX Sedan
NGK plug PFR6G
The NGK plugs come with tightening instructions, I believe the PFR6G's require going hand-tight (basically 'seating' the gasket against the head), then going 2/3 of a full turn further to properly crush the gasket. Bosch +4 plugs in a WRX? Many of my customers have had MUCH better luck with the standard issue 'laser platinum' which were OE issue for many Japanese cars over the +4 Bosch. Not sure if the +4's are a good idea for the WRX. In the past, in my experience, Bosch Platinums were not the answer.
Good luck,
Good luck,
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Re: NGK plug PFR6G
Originally posted by jimr
Bosch +4 plugs in a WRX? Many of my customers have had MUCH better luck with the standard issue 'laser platinum' which were OE issue for many Japanese cars over the +4 Bosch. Not sure if the +4's are a good idea for the WRX. In the past, in my experience, Bosch Platinums were not the answer.
Good luck,
Bosch +4 plugs in a WRX? Many of my customers have had MUCH better luck with the standard issue 'laser platinum' which were OE issue for many Japanese cars over the +4 Bosch. Not sure if the +4's are a good idea for the WRX. In the past, in my experience, Bosch Platinums were not the answer.
Good luck,
Registered User
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From: Lawrence, Kansas
Car Info: 19' Impreza Sport Manual / 99 Miata / 13' OB
Not really, I put some Bosch +4's in my wifes OB that had a 2.5 I didn't notice any thing bad or good about the way the car ran. However when I took them out and changed the plugs after 30K, it was obvious that on all 4 plugs only one of the electrodes was doing all the work. If I can find them I'll try to take a close up shot to show what I mean. I still think copper NGK's are the best way to go if you change them more often is all.
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