Question about 1998 Buick LeSabre

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Why is there a misfire detected-cylinder number 4

Sparkplugs were changed

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Any one of several reasons

Ignition to that cylinder is week or not there at all

Injector issues-too rich,too lean or dead

Vacuum leaks almost anywhere

Mechanical damage-failed valves,head gasket,
intake gasket

Could keep going depending on motor design

Posted on Dec 12, 2012

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Posted on Jan 02, 2017

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