ORIGINAL: myothercarsaporsche

Hello Folks,
Does anybody know the compression psi spec for 96LX 1.9L?
I'm getting 120psi on #1, 90-100psi on #2, 120psi on #3, and 150psi on #4.
Also, the Haynes repair book has the goofiest way of doing a compression check.We ignored their way andjust checked one cylinder at a time - leaving the other three sparkplugs connected. Though, we didn't disable the coil or hold the throttle to full open.
Does anybody also knowanother method of doing a compression check? From what I've looked up, this is the proper way:[*]Make sure the engine has been warmed up before beginning the test, to ensure that the oil has been warmed up. A cold engine will not test correctly.[*]Disable the ignition module or coil.[*]Insert the compression tester into one cylinder spark plug hole at a time.[*]Hold the throttle to full open position to ensure the engine gets adequate air intake.[*]Crank the engine continually for at least five to 10 full revolutions to obtain an accurate reading on the compression tester.[*]Record the reading for each cylinder. If any of them vary 10 percent or more from each other a problem may exist in one or more cylinders. If the variance is greater than 10 percent, specialized testing equipment may be required to fully diagnose the problem.[*]If all cylinder readings are within 10 percent of each other, no further testing is required and compression is considered optimal.


Thanks for any and all help,
Mike