For R18A1 minimum compression should be 128 psi.
For K20Z3 minimum compression should be 135 psi.
At 110 psi it is below the minimum required value so you might have difficulty starting. If engine hade been left idle for extended periods without starting, the piston rings could be dry resulting in the low compression. Pump some engine oil into the spark plug ho;e into the cylinders and crank the engine for a few revolutions without the spark plugs and retest the compression.
A damaged rod can cause knocking, but that would be noticeable when the conrod bearings are checked. Plastigage would enable you tio check the clearance to see if they are within specs.
Do you have battery voltage at the Black/White wire with ignition on and while cranking? Pulsing of the ignition coil is via the PCM which receives its signal from the crankshaft and camshaft position sensors.
Tuesday, December 7th, 2010 AT 12:32 PM