2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Engine compression, where can I get a gauge to check it?

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Old Jul 5, 2006 | 10:32 AM
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MazdaRX7.ws's Avatar
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Engine compression, where can I get a gauge to check it?

Hi guys I still have not been able to check the compression with a gauge due to the fact I can not find one. Can anyone tell me where I can find a gauge to check the compression on my engine to see if it is blown?
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Old Jul 5, 2006 | 10:36 AM
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You can buy a normal piston one at Walmart and use it as described by RotaryResurrection.com -- Worked for me.
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Old Jul 5, 2006 | 01:45 PM
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bought one for 20 bucks from a harbor frieght, worked great.
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Old Jul 5, 2006 | 03:42 PM
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I just got back I bought the gauge. Before i do anything maybe you all can give me some advice.

1987 turbo 2 doesn't start.

1- if one of the apex seals are stuck wont the compression test look like I have a blown seal?

2- if I use oil and squirt it into the bottom rear and front housing to try to free up any stuck seals prior to doing the compression test, when I do the compression test after trying to free up the seals, wont the left over oil clog the inlet for the compression valve?

What do I do first and how?

Do I Check compression first then oil the seals with egi fuse out?

OR oil the seals with egi fuse out then check compression??

Anyone please help me.

Last edited by MazdaRX7.ws; Jul 5, 2006 at 03:52 PM.
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