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Whats the compression on #2 cylinder which is the rear center one?
have to take upper intake off to get to injectors,
therefore cannot start
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Different tech here. You are going to need the use of a scan tool for diagnosing this. You need to be able to monitor what is called the drivers inside the PCM which command the injectors to fire when commanded as well as the ignition coil. You need this oscilloscope connected in conjunction with the scan tool to watch these commands to determine if the fault is the PCM (vehicles computer). If the computer tests fine then you have to access the injector for replacement. Other things to check are clogged EGR ports and ignition wires incorrectly routed to the cylinders.
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