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Discussion Starter #1
I just replaced the spark plugs on my 2001 SE with 50,000 miles and I used ngk's bcpr7es-11 gapped to 1mm and when I toook the old spark plugs out those where ngk's pfr6h-10. Where those the factory plugs or the previous owner changed the spark plugs and used those?
 

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They could have been the factory plugs at 10 is the recommended plug. Where did you get your new plugs? Do the current plugs look really bad? You are changing them about 10k miles sooner than normal. Assuming they've been changed before.
 

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Discussion Starter #3
I got the new plugs from autozone and paid about $8 for all 4 and I got the car less than a year ago and I didnt know if the previous owner changed the spark plugs before.
 
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