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Idle misfire solved, now misfire under a load


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I have a horrible idle, severe misfire and when in drive or reverse would almost stall out.

 

Changed turbo

Swapped Injectors with known good out of my 04 Subaru XT

New Headgaskets

New Timing Belt

New Spark Plugs

New head, all valves adjusted

 

Still had misfire.

 

Tore engine down, found ringland failure on 3 cylinders, had engine reworked, new pistons, rings, etc.

 

Misfire at idle is now gone. Put in gear and the idle is solid, even with a/c idle is solid. Drive under light pedal acceleration, all ok. Drive with any acceleration and misfire goes from 1-4 on autel scan tool, but triggers misfire codes in cylinder 2, and cylinder 4. Once off of throttle the misfires disappear. Any ideas?

 

When drivi

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Check ignition coils. These cars eat them. Also check the plug that goes into the ignition coils. I had that problem and ended up having to put a slight twist on the pins in the coils to make sure they had good contact and the problem went away.
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