Possible causes of misfire?
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Cadillac Catera and Cimarron Forum Discussion, Possible causes of misfire? in Past Cadillac Vehicle Discussion; I've had this constant misfire on cylinder 6 on my '98 Catera and the harshness and vibration is irritating. I ...
  1. #1
    IvoryWhiteCatera's Avatar
    IvoryWhiteCatera is offline Cadillac Owners Fanatic
    Automobile(s): 1998 Catera (SOLD)
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    Possible causes of misfire?

    I've had this constant misfire on cylinder 6 on my '98 Catera and the harshness and vibration is irritating. I checked the spark plugs, they are all fine (and new). They're gapped correctly.

    Could it be the wires? or coil?

    I heard that the misfire would be on random cylinders if it were a coil problem.

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  3. #2
    JohnJJO's Avatar
    JohnJJO is offline Cadillac Owners Fanatic
    Automobile(s): 2000 Catera Sport
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    Re: Possible causes of misfire?

    go to autozone get u rental tool (compression test gauge) test that cylinder for compression (best to test whole side 2,4,6 cylinders) different not supposed to pass 15% between them. If pressure ok, get u new coil. i had the same thing on mine, even avter i got new coil it last for a year then whole side was misfire , i replaced by warranty and since that time - no problems
    PS. I'm not recommend AutoZone coil brand, get u AcDelco brand , u can order one on rockauto or ebay with warrenty, way cheaper!

  4. #3
    IvoryWhiteCatera's Avatar
    IvoryWhiteCatera is offline Cadillac Owners Fanatic
    Automobile(s): 1998 Catera (SOLD)
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    Thread Starter

    Re: Possible causes of misfire?

    Quote Originally Posted by JohnJJO View Post
    go to autozone get u rental tool (compression test gauge) test that cylinder for compression (best to test whole side 2,4,6 cylinders) different not supposed to pass 15% between them. If pressure ok, get u new coil. i had the same thing on mine, even avter i got new coil it last for a year then whole side was misfire , i replaced by warranty and since that time - no problems
    PS. I'm not recommend AutoZone coil brand, get u AcDelco brand , u can order one on rockauto or ebay with warrenty, way cheaper!
    Thanks.

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