Compression Test
03-18-2008 | 08:12 PM
#21
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Joined: Apr 2005
Posts: 701
Originally Posted by Mr_Meaty
So, by "Pulling the coils" you mean completely removing them from teh car? Or just disconnecting them from teh spark plugs?
And there is nothing else you need to disconnect to prevent fuel from spraying everywhere?
And there is nothing else you need to disconnect to prevent fuel from spraying everywhere?
Just pull em off the plugs and keep em away from ground. Should not have to worry about fuel. This information is from some of the guys that use to be on the site before it became just about completely useless for technical assistance.
03-18-2008 | 08:23 PM
#22
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Joined: Aug 2005
Posts: 764
Originally Posted by Schuller
Should open throttle body for air. Its standard procedure really and I have not heard it does not apply to a Scion.
idk, just asking since i don't remember reading that in the repair manual. how to do the compression test is in the manual. i remember them stating to unplug the coils and injector harnesses. i don't remember them stating to hold down the gas pedal, but i could be wrong. i'll check the repair manual later.
03-18-2008 | 08:35 PM
#23
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Music City Scions
Scikotics
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Joined: Jun 2005
Posts: 16,747
From: TN
Originally Posted by satoman44
i just removed the efi fuse. btw, your comp test numbers look good. according to the repair manual for 05-06, compression should be no less than 165, with a difference of no less than 15 psi.
That's good to know. Where did you get the repair manual?
03-18-2008 | 08:42 PM
#25
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Music City Scions
Scikotics
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Joined: Jun 2005
Posts: 16,747
From: TN
Originally Posted by satoman44
Originally Posted by Schuller
Should open throttle body for air. Its standard procedure really and I have not heard it does not apply to a Scion.
idk, just asking since i don't remember reading that in the repair manual. how to do the compression test is in the manual. i remember them stating to unplug the coils and injector harnesses. i don't remember them stating to hold down the gas pedal, but i could be wrong. i'll check the repair manual later.
03-20-2008 | 01:23 AM
#36
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Scikotics
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Joined: Nov 2007
Posts: 86
From: Los Angeles California
Youtube Video Of The Compression Test How-To....
http://www.youtube.com/v/ujVhVt_rhOk
The video is being converted by youtube right now ..
if you dont want to wait and you want to download a Hi-res version of the video..
i have opened up my dedicated web server so you guys can download a hi-res version of the video.
it's 200+ megs guys ...
http://deathbydragon.com/CTESTHIGHQUALITY.mp4
http://www.youtube.com/v/ujVhVt_rhOk
The video is being converted by youtube right now ..
if you dont want to wait and you want to download a Hi-res version of the video..
i have opened up my dedicated web server so you guys can download a hi-res version of the video.
it's 200+ megs guys ...
http://deathbydragon.com/CTESTHIGHQUALITY.mp4
03-20-2008 | 04:17 AM
#37
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Joined: Jun 2006
Posts: 423
From: St. Louis, MO
good vid, I did a compression test a few weeks ago and found my #2 cylinder was toast, i think my numbers were 180, 60, 180, 180.
after tearing it apart i found that i had cracked a ring landing on my #2 piston.
after tearing it apart i found that i had cracked a ring landing on my #2 piston.
03-20-2008 | 03:09 PM
#40
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Joined: Jun 2006
Posts: 423
From: St. Louis, MO
not sure what exactly caused it, i was only up to 7 psi when we first noticed powerloss, they car had been miss-shifted before but i thought that woulda took out a valve before a piston ring. either way its all almost back together and should be ready for boost again soon.