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Any reason to replace coils if not cracked

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Hey there from Hollywood and welcome.

IMHO, if there are not any issues (no misfires/hesitation/issues when wet/cracked/etc.), then no unless you are doing it as a preventative measure.

You can try to search you may be able to ohm out (test with multi meter) your coil packs to see if they are operating fine electrically.

Edited by logray
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When replacing the plugs check for oil and replace "O" rings (2 per tube) if oil is present. Examine coil packs and if they are not cracked and they are in good shape you can save your money and reinstall them. I have 120K and change plugs every 30K and have not had to replace a coil pack yet.

Diagnosis Procedure:


Here is a link to Pedro's Garage Spark Plug DIY. PRESS HERE

Here is a link to a thread in Renntech with a great discussion on coil packs. PRESS HERE


Edited by kbrandsma
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