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Q: my buick is losing compression, I think. on 2003 Buick LeSabre

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
I took it and had a person put it on there machine, my computer reading showed losing compression on number 6. so I replaced that coil pack. and spark plugs & wires replaced. Ialso replaced the fuel filter. it's still bogging and not fixed. Please help me !
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