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Compression number and sparks gap

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Old 02-25-2011, 09:28 PM
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Default Compression number and sparks gap

Hi I am servicing my S this weekend and i want to confirm the recommended:

Sparks Gap
Cylinders compression number - this is to allow me to check if there are any leaks in the cylinders. For those who don't know this here is a link on how to do compression test: http://www.automedia.com/Engine_Compressio...ccr20050801cc/1 with pictures.

Thanks.
Old 02-25-2011, 09:42 PM
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re -compression test details:

https://www.s2ki.com/forums/index.php?showtopic=434729

anyone got recommendations for spark gaps?
Old 02-25-2011, 09:45 PM
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Spark Plug gap 0.040" or 1mm
Compression 1570Kpa, 228 psi.
HTH
Old 02-26-2011, 01:40 AM
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To add to that you can have a minimum of 135psi and max of 28 psi between them.

Depending on how you do it, battery etc you can have varying results but i doubt you will get 228psi per cylinder.

Also spark plugs, NGK look at the FAQ.
Old 02-26-2011, 07:11 AM
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If you pull the fuse for the Engine management will that stop fuel and spark?
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