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Old 07-10-2012, 11:33 PM   #1
tebriel
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Default Compression test tips

When I was trying to do a compression test on my outback, I found it was a total PITA to get the compression tester with the flexible hose threaded into the spark plug hole.

Does anyone have tips on how to do that? Is there an adapter that people use at all to make it easier?
Thanks!
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Old 07-11-2012, 12:34 AM   #2
renhoek
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Nahhh. It's a pain. Just keep fiddling with it. You'll get there.

Good idea to be relaxed while you are doing it, with no time pressures. Otherwise it will take even longer!
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Old 07-11-2012, 07:55 AM   #3
tebriel
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hah ok, will do. Thanks!
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Old 07-11-2012, 08:41 AM   #4
GDR
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Spark plug anti foulers. I use three of them locked together.

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Old 07-12-2012, 09:21 PM   #5
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Quote:
Originally Posted by GDR View Post
Spark plug anti foulers. I use three of them locked together.

My new hero...awesome idea, especially for those of us of generous proportion.
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Old 07-11-2012, 11:43 PM   #6
tebriel
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GDR Thanks! That's exactly the type of thing I'll have to go hunting for.
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Old 07-13-2012, 09:02 AM   #7
jays05
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Put a rubber hose around the compression tester hose - it will help center it better.
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Old 07-13-2012, 11:00 AM   #8
tebriel
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^^ that's an interesting idea.

I just bought 4 anti-foulers. So I think that should work well and make it a lot easier and quicker.
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Old 07-13-2012, 11:24 AM   #9
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Make sure the anti-foulers are very tight or Jbwelded. The last thing you want is for one of those to be stuck in the sparkplug hole while the rest of them unscrew from one-another. <<< would be a nightmare and is a pita to fix.

Also put a little grease or wd40 on the rubber boot inside the sparkplug socket, so that doesnt get stuck on the plug when you go to pull it out. Or tape it.
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Old 07-13-2012, 11:27 AM   #10
tebriel
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2gnt2wrx, each anti-fouler is hex, so a socket would just pull it out anyway

But yeah, I'll put threadlock on them.

Anyone know of a writeup on how to do a leak-down test for subarus?
Thanks!
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