im having issues with cyl #1 misfire at idle only. So far i've swapped coil packs cyl to cyl, installed new coil packs, replaced injectors (this got rid of the other 2 & 3 misfire codes), adjusted valves, swapped spark plugs, egr seems to be clean had the intake apart no blockages, checked for vacuum leaks. compression test is the only thing i have left. any other ideas?
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