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Old 10-19-2005, 09:32 PM   #1
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Question Spark Plug Duration

I just bought a set of the stock platimun spark plugs. I wanted to get the copper ones, but my grandma bought them for me(since she travelled to the states a few days ago) and she used the VIN and got me the platinum ones.
How long do platinum spark plugs last?
My SVT has 18800 miles on it right now, do you think it's time to change plugs and filters, or at what mileage is this normally done?


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Old 10-19-2005, 11:13 PM   #2
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they're supposed to last 100000 miles, but I would change them before that, and you can usually regap them and get a bit more out of them
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Old 10-20-2005, 12:54 AM   #3
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on my previous focus a NON-SVT the motorcraft platinums only lasted 20,000 before i made them go bye bye lol...but seriously you should change plugs every 30k miles along with wires at the minimum. You do NOT want to get the copper ones unless your running Turbo/supercharger or HIGH HP NA engine
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Old 10-20-2005, 07:25 AM   #4
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we do have a high HP NA engine :P
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Old 10-20-2005, 11:01 AM   #5
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The copper plugs work fine in NA engines, the only real reason they switched to platinum is it lasts longer, it doesn't perform any better.... actually copper is a better conductor and will DEFINITLY produce a more powerful spark.
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Old 10-20-2005, 04:34 PM   #6
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So I should probably not change the plugs yet??
The car loses a LOT of power when I turn the A/C on. To a point where if I'm not careful and not give it a lot of gas when coming off a stop it turns off, and it bogs down a lot before it starts moving. Now this is not because I can't drive stick shift cars since I've driven them ever since I can drive. What could be causing this? My mechanic told me it needed a tune up(new plugs, oil, filters) but I dont really believe him. He says that for whatever problem the engine has on other cars, makes you spend a lot of money and the problem continues.

So what say you my friends, should I change the plugs now or wait?
Do spark plugs go bad if you store them for a long time? Like say if I wait till I've put around 60,000 miles on the car which could take me a couple of years.
What could be causing the power loss when I turn the A/C on???(I've read our cars have this problem, but I think I'm losing too much power)

Thanks for sharing your wisdom with me.
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Old 10-21-2005, 10:11 PM   #7
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If it was me I would've changed my plugs and wires back when it was 10,000miles. Anyways, if you aren't sure, just take out the plugs and check the plugs' condition and gap.

I learned to deal with the A/C eating power...just need to give it more gas. Worse comes to worse, just push the A/C button off and then turn it back on when you get the car rolling.
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Old 10-21-2005, 10:45 PM   #8
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Quote:
Originally posted by 03OrangeSVT
The copper plugs work fine in NA engines, the only real reason they switched to platinum is it lasts longer, it doesn't perform any better.... actually copper is a better conductor and will DEFINITLY produce a more powerful spark.
^^^ Actually to be a technical internet wienie.. Copper does not conduct better, there is more of it and it works fine, but Platinum IS a better conductor of electricity than copper.
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