Engine/Power - EJ20T (pre-2006 WRX and JDM) There is replacement for displacement, it is forced induction - OEM 2.0 liter turbo engines in the USDM WRX. 90-94 Legacy Turbo EJ22 turbo engines can also be discussed here.

DIY Spark Plugs: Don't believe the hype

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Old Jan 24, 2004 | 03:44 PM
  #1  
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Car Info: MMVI AW WRX STI
DIY Spark Plugs: Don't believe the hype

I was hesitant to do it myself because the dealer charges something like $149 and everyone whines about how hard it is.

First time out was very easy, about an hour working alone.

Tools needed to make it very easy:
  • 10mm for air scoop
  • 12mm for washer reservoir, airbox, and coil bolt
  • 5/8" Spark plug socket
  • 3" extension (for actual plug removal)
  • >12" of extension (for airbox removal)
  • 1/4" socket wrench/torque wrench
  • antiseize
  • beer/soda

Don't be scared of what you read...it's _really_ easy.

Now to go see how long BKR7E coppers last. :banana:
Old Jan 24, 2004 | 06:50 PM
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Pizza, what's your mileage at time of spark plug change?
Old Jan 24, 2004 | 07:34 PM
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Originally posted by thebankman
Pizza, what's your mileage at time of spark plug change?
i want to know the same thing.
Old Jan 24, 2004 | 07:34 PM
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First time I did plugs, I timed it, took 50 minutes.
I can do 'em now in ~30, not rushing.
Piece of cake, just like the 'green brackets', and the oil return hose for the turbo.
Old Jan 24, 2004 | 08:20 PM
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Almost 30k even. I will post pics of the stockers later so people can tell me how many things are wrong with my setup!
Old Jan 25, 2004 | 07:28 AM
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It's not hard I have a how to here:

http://www.scoobymods.com/forums/sho...=&threadid=511

and look here too:

http://www.scoobymods.com/forums/sho...=&threadid=166
Old Jan 25, 2004 | 07:46 AM
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The biggest PITA is making sure the coilpacks are properly seated on the plug. Another thing to make sure is that you have a ratchet that has a small degree of travel between clicks of the ratchet. The driver-side rear plug doesn't leave a lot of room for ratcheting.
Old Jan 25, 2004 | 03:08 PM
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Originally posted by EtchyLives
The biggest PITA is making sure the coilpacks are properly seated on the plug. Another thing to make sure is that you have a ratchet that has a small degree of travel between clicks of the ratchet. The driver-side rear plug doesn't leave a lot of room for ratcheting.
I had that problem too...I just broke it loose with the ratchet then unscrewed it by hand.


Originally posted by simpwrx02
coppers? i know my came with NGK platnums stock and i put one step colder NGKs back in like $11 a peice for the plugs. and they were real easy to change me and a buddy in like 1 hour this included changing IC hoses and airboxes.
Everything I've read states that copper sparks much better than the rare metals, but they don't last as long. Something like <10k miles instead of ~50k++
Old Jan 25, 2004 | 06:46 PM
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An offset rachet handle, one with a bend in it, works well in this area.
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