Compression Loss #3 Cylinder

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09-11-2014 | 04:51 AM

NC Chuck

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Compression Loss #3 Cylinder

Anyone had experience with compression loss in a cylinder. My mechanic says #3 is running 120, other three 185.

Rings? Head gasket.

It's a 2008 Mini Base with 98k on it.

Thank you.

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09-11-2014 | 05:10 AM

cerenkov

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From: Raleigh, NC

A leakdown test will help determine where it's leaking.

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09-11-2014 | 02:33 PM

nkfry

Vendor - Detroit Tuned 15 Years

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From: Clawson, MI

^ You'll need to perform a cylinder leakdown test to verify where the leak is from.

Being as you have a Cooper, the carbon buildup isn't an issue on your car, so you need to find the source of the compression leak.

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