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

Blown motor? 60&80 compression #s

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Old Apr 20, 2012 | 02:28 AM
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FC3S Timmy's Avatar
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ReTripleOG
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Blown motor? 60&80 compression #s

Ok so I've been driving my 7 like **** crazy shaking loss of power for the past 5 months car sounds like a subaru boxer. I Finally did a compression test and front came to be a 60 and rear was 90. I'm thinking the primaries are crack anyone dealt w this?
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Old Apr 20, 2012 | 07:16 AM
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Pull the egi fuse, add oil, crank a few times, pull all spark plugs, retry compression check. This eliminates a fuel "washing" possibility.

Probably time for a rebuild though.
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Old Apr 20, 2012 | 09:32 AM
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Are you using a piston engine tester?
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Old Apr 20, 2012 | 02:48 PM
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ReTripleOG
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Yes unfortunately
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Old Apr 20, 2012 | 06:14 PM
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And have someone hold the throttle open while doing the test.
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Old Apr 20, 2012 | 07:56 PM
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Did you hold the bleed button open on the compression tester so that the needle bounces with every pulse? You should have 3 compression numbers per rotor.
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