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Old 05-05-2004, 07:07 PM   #1 (permalink)
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engine compression check on '86 truck

A co-worker wants me to do a compression check on his '86 carbed 4 cylinder Nissan truck and I got a few questions. He told me it has 8 spark plugs which was a surprise to me. I've worked on Toyota and Chevy trucks but never touched a Nissan before. Do I pull all the plugs and test all 8 or only test certain ones? Anyone know the compression spec/range for that particular year engine. Thanks for any info.
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Old 05-06-2004, 06:45 AM   #2 (permalink)
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That would be the NapZ engine, they just put 2 plugs/cylinder in to try and clean up emissions. Just pull one plug per cylinder for compression checking, whichever is easier to get to.
Don't know the spec on 'em.
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Old 05-06-2004, 06:04 PM   #3 (permalink)
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Cool. Thanks.
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Old 05-07-2004, 07:34 AM   #4 (permalink)
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should have 170 psi for compression.
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