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1012 Tempest Tech-Tip Changing Spark Plugs

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Although complaints from the field about Tempest spark plugs rarely occur, most take place immediately after their installation, reporting that the engine ran rough. If requested, we expeditiously send replacement plugs to get the customer back in the air ASAP and arrange to have the suspect plug(s) returned to us for analysis. Upon receipt, we inspect and test each one. In virtually all cases, after cleaning, the plugs test ok. So, what’s going on?


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