Quote:
Originally Posted by TimMullen
Did you hold the throttle wide open while you cranked the engine? If you don't, the engine can't pull in enough air, and the compression readings will be low.
Is your car a "Throttle By Wire?" If so, does the ECU keep the throttle closed under the cranking conditions?
The fact that all the cylinders are reading consistent usually indicates that things are well, and the readings are low for some reason.
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05 car and yes, the throttle was wide open... Tried both ways, thrttle closed and open- readings were the same... which is intuitive since all the other plugs were out and letting air into the plenum---An open spark plug hole creates a huge vacuum leak..
Best,
phil