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Boxster misfires


Vehicle Information: Year: 1998; Engine (type, size, modifications): 2.5; Total Mileage: 76K; Transmission: Tiptronic;

Hi Scott. Have a little problem here with my '98 Boxster. Showing misfire codes 0300,0305, and 0304. When I recently had the car on a lift to change the oil, I noticed that there were"stress cracks", in a couple of the black plastic "matchboxes", on the "coil wires". Sorry I don't know their real designations. I have also noticed a misfire feel when there has been heavy rain or humidity. I figure it's moisture getting in through these cracks. I intend to replace all six. Does this seem like a correct course of action? Seems to be getting worse and now I've got the codes showing. Also have a code,1411 showing , but I can't seem to find a reference to this code. Also, how about a can of injector cleaner? Recommended? Any particular brand, if so recommended? Thanks, Bruce

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