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Any thing I have to disconnect before I do a compression test?

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Old Feb 3, 2020 | 04:28 AM
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TritonZ
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Any thing I have to disconnect before I do a compression test?
I going to do a compression test on my 1989 GTU and I wanted to know if I needed to disconnect anything else other than the crank angle sensor? I also wanted to know where the fuel pump circuit and relay is located?
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Old Feb 3, 2020 | 05:37 AM
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I just pull the EGI fuses but unplugging the CAS would be just fine as that should cut fuel and spark.
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Old Feb 3, 2020 | 09:52 AM
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From: https://www2.mazda.com/en/100th/
i just unplug the CAS, and maybe the Circuit Opening relay under the dash
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