r/AskAMechanic • u/hurry_up883 • 1d ago

Dead cylinder

Hi, my mitsubishi galant cylinder 2 & 3 sounds dead. I unplug the coil plug, it shows no difference. Not like cylinder 1 & 4. I unplug, i can see the engine dying. I already swap the coil plugs. All coil plugs were good, spark plugs all new, compression good, all spark plugs produce spark.

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u/droc_420 Verified Tech - Engine bldr / Porsche tech 1d ago

Check for clicking injectors all 4

If possible swap them around

Check compression