Not unless they are all bad. What is happening that makes you feel it may need done?

Answered by Jacobandnickolas (expert)
57,475 answers provided

have replaced 3 and still wont start

Response from gabewatt
1 question asked

I doubt that they all have gone bad. Are you getting spark to the plugs? Were there any codes you had before taking it apart

Answered by Jacobandnickolas (expert)
57,475 answers provided

cylinder 6 was misfiring replaced it and it drove good for a day.needs diagnostic test?

Response from gabewatt
1 question asked

I wouldn't spend the money on all the coils, Check to see if you are getting spark and fuel to the engine.

Answered by Jacobandnickolas (expert)
57,475 answers provided