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Old 06-03-2012, 12:38 PM   #1
rice h8r
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Question How are you supposed to change the rear most spark plugs?



I checked out a Scion FRS at a Scion drive event yesterday and I noticed the rear spark plug on the driver's side seems to be impossible to remove. How are you supposed to take it out? It looked like there wasn't enough room between the valve cover and the frame rail to take out the spark plug let alone fit a ratchet with a socket and extension in there.
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Old 06-03-2012, 02:11 PM   #2
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Pull the engine.
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Old 06-03-2012, 03:00 PM   #3
rice h8r
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Seriously???

They better have some 100K platinum plugs in there then.
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Old 06-03-2012, 04:46 PM   #4
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Quote:
Originally Posted by rice h8r
Seriously???

They better have some 100K platinum plugs in there then.
I believe they have iridium plugs.
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Old 06-03-2012, 04:48 PM   #5
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Quote:
Originally Posted by rice h8r View Post
Seriously???
Well if you have a lift, might be easier to just drop it a bit instead.
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Old 06-04-2012, 09:45 AM   #6
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Welcome to Subarus.
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Old 06-04-2012, 11:15 AM   #7
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You pull the fender liners out and do it from the wheel wells. It's been covered 100 times.
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Old 06-04-2012, 05:29 PM   #8
rice h8r
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^ Have you looked at the engine bay in person like I did?

Like I said in the original post, the one towards the firewall is right against the FRAME RAIL, with the subframe below it and the sway bar right behind it. There was maybe 2.5 inches between the valve cover and the frame rail for the driver's side. I didn't take a look at the passenger side.
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Old 06-04-2012, 08:38 PM   #9
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apparently the way to change the rear plugs is to lift the engine about 5 or so inches.
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Old 06-11-2012, 08:02 PM   #10
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Find a friend with skinny fingers. I broke stuff on my WRX replacing plugs, we'll see if I even try it on the BRZ.
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Old 06-11-2012, 09:23 PM   #11
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Are you sure there isn't a hole in the sheet metal to allow a socket and extension to get in there from the wheel well?
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Old 06-11-2012, 11:53 PM   #12
rice h8r
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I didn't see any holes and it seemed like there wasn't enough room between the valve cover and the frame rail to take the spark plug fully out of the hole to be able to slide it out.

Could someone take some photos to show what I'm talking about? I'm an idiot for not doing so.

Last edited by rice h8r; 06-12-2012 at 12:03 AM.
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Old 06-12-2012, 04:01 AM   #13
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Quote:
Originally Posted by rice h8r View Post
I didn't see any holes and it seemed like there wasn't enough room between the valve cover and the frame rail to take the spark plug fully out of the hole to be able to slide it out.

Could someone take some photos to show what I'm talking about? I'm an idiot for not doing so.
The driver side plugs on my WRX was a royal PIA (especially the rear). You know what works... Here's what I did: just apply enough torque to break the plugs loose. Then use some properly sized vacuum hose or water hose and snake it in there onto the plugs. The hose while "snaked" and not straight can be rotated counter clockwise and ... presto! Plugs come out. To insert, do the same thing in reverse.

The key is the properly sized hose to fit over and "grab" the plugs, and the key is that the hose can be all "S" shaped and still rotated (spun).... IDK, maybe the BRZ is even worse than the driver rear on my WRX.....
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Old 06-12-2012, 01:52 PM   #14
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The BRZ requires you to lift the engine to access the rear spark plugs...
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Old 06-12-2012, 11:08 PM   #15
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Can't be any harder than the svx plugs.
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Old 06-15-2012, 10:56 AM   #16
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There is a secondary hood prop mounting location (pull the stock one out from the radiator support) on the strut tower. The hood will sit vertical.

Then you raise the motor (unbolting / removing all applicable bolts / parts neccessary) about 5-6 inches, be very careful not to kink or break the a/c lines when raising the motor.

That will let you services the plugs.
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Old 06-15-2012, 10:56 AM   #17
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Double internet post fail, please delete
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Old 06-25-2012, 05:17 PM   #18
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Illusive's post is the way the service manual describes. I'm hoping someone comes up with a "trick" way of doing it.
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