"Parmas" Motor - Toyota Yaris Forums

cdydjded · 03-03-2010, 10:44 AM

A proper test that would have determined the condition of this engine is not a compression test, its a leak down test. A compression test only tells you the compression psi in the cylinder chamber but it does not telling you if the piston rings or valves are sealing correctly. BTW how much vacuum was you boost guage reading at idle?

Parmas · 03-03-2010, 12:28 PM

Quote:

Originally Posted by cdydjded

A proper test that would have determined the condition of this engine is not a compression test, its a leak down test. A compression test only tells you the compression psi in the cylinder chamber but it does not telling you if the piston rings or valves are sealing correctly. BTW how much vacuum was you boost guage reading at idle?

Vacuum was -20 if I remember correctly.

Tell me more about this leak down test

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03-03-2010, 10:44 AM	#1
cdydjded Drives: Yaris LB Turbo Join Date: Aug 2006 Location: Miami FL Posts: 782	A proper test that would have determined the condition of this engine is not a compression test, its a leak down test. A compression test only tells you the compression psi in the cylinder chamber but it does not telling you if the piston rings or valves are sealing correctly. BTW how much vacuum was you boost guage reading at idle?