Changed to Copper plugs and MPG drops
#1
Changed to Copper plugs and MPG drops
I changed my spark plugs about a week ago and I am getting terrible gas mileage and maybe it's just in my head, but it seems as if it may be running a little rougher too. I had the NGK platinums in but switched to the coppers.
Now,I have read that people change from platinums to copper with no problem.
When gapping the plugs I used the wire kind. I adjusted the tip(.044) until there was just a little resistance when pulling the spark plug gauge out. Is that how it's supposed to be done? Do the platinums have to be gapped? I tested the gap in my old plugs(plat), and the gap is smaller than .044. I just would hate to have to spring $60 for the plats to get my normal MPG back. Did I do something wrong here?
Now,I have read that people change from platinums to copper with no problem.
When gapping the plugs I used the wire kind. I adjusted the tip(.044) until there was just a little resistance when pulling the spark plug gauge out. Is that how it's supposed to be done? Do the platinums have to be gapped? I tested the gap in my old plugs(plat), and the gap is smaller than .044. I just would hate to have to spring $60 for the plats to get my normal MPG back. Did I do something wrong here?
#4
Originally Posted by s0ber
what do u mean u gapped it with the wire kind? wthat?
or here: http://www.cars.com/advice/caradvise...ugs_image2.jpg
etc.
#10
Coppers come pre-gapped if the part number was BKR5E-11. If they didn't have the -11 on them they weren't pre-gapped, but I've never seen a set that WASN'T pre-gapped.
Anyways I personally thing this is in your head.
Anyways I personally thing this is in your head.
#11
Originally Posted by Nealoc187
Coppers come pre-gapped if the part number was BKR5E-11. If they didn't have the -11 on them they weren't pre-gapped, but I've never seen a set that WASN'T pre-gapped.
Anyways I personally thing this is in your head.
Anyways I personally thing this is in your head.
The reason I gapped the coppers was because I have read on here that they weren't pre-gapped and the platinums were. But even if they were pre-gapped isn't the gap still supposed to be .044?
I just need to know if I need to do some more gapping. If all else fails I will buy more copper plugs and leave them as they are if they are indeed pre-gapped.
Thanks for the responces.
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6th Generation Maxima (2004-2008)
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09-02-2015 09:53 PM