compression, in general

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compression, in general

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compression, in general - 3/18/2008 4:29:33 PM

brett

Posts: 4
Joined: 3/18/2008
Status: offline

What should a new engine's compression psi be ?

What should an engines mimimum compression psi be before I either overhaul the engine or call the junk man.

Post #: 1

RE: compression, in general - 3/19/2008 9:18:14 AM

toyomoho

Posts: 848
Joined: 1/24/2008
Status: offline

Lower compression alone is not enough to call the junk man. A larger issue is oil consumption and engine power. Unless the engine has a head gasket leak or other problems would not be too concerned with compression.

A better test is a leak down test. Air under pressure injected into the cylinder and compared to what is leaking out via a pressure differance readout.

(in reply to brett)

Post #: 2