Are there any advantages from running sparks plugs that are one step cooler than
08-09-2001, 07:50 AM
#2
Originally posted by Blade_99SE
stock? My car is just NA, no SC or NOS. I'm going to have my plugs changed today or tomorrow.
Thanks
Blade
stock? My car is just NA, no SC or NOS. I'm going to have my plugs changed today or tomorrow.
Thanks
Blade
Read this post:
http://forums.maxima.org/showthread....threadid=45742
Look under the "Spark Plug" post. There is a link that helps explain the heat range differences.
08-09-2001, 08:16 AM
#4
I wouldn't do it unless your car is REALLY driven hard or for very long distances. I noticed a rather large decrease in performance when I put the colder plugs in (the car was noticably less 'enthusiastic' to go), and yes, I did make sure that they had the right gap and that they were installed correctly. When I changed back to the 'regular' heat range, the performance came right back. This was with absolutely no other changes in the car between the differences, so I HAVE to blame the plugs. Some dealerships supply both the regular ones and the cold ones and will install the colder ones if you don't pay attention (cough***Premium Nissan of New Rochelle, NY***cough), so make sure that they are the right ones.
08-09-2001, 02:23 PM
#5
Originally posted by medicsonic
I wouldn't do it unless your car is REALLY driven hard or for very long distances. I noticed a rather large decrease in performance when I put the colder plugs in (the car was noticably less 'enthusiastic' to go), and yes, I did make sure that they had the right gap and that they were installed correctly. When I changed back to the 'regular' heat range, the performance came right back. This was with absolutely no other changes in the car between the differences, so I HAVE to blame the plugs. Some dealerships supply both the regular ones and the cold ones and will install the colder ones if you don't pay attention (cough***Premium Nissan of New Rochelle, NY***cough), so make sure that they are the right ones.
I wouldn't do it unless your car is REALLY driven hard or for very long distances. I noticed a rather large decrease in performance when I put the colder plugs in (the car was noticably less 'enthusiastic' to go), and yes, I did make sure that they had the right gap and that they were installed correctly. When I changed back to the 'regular' heat range, the performance came right back. This was with absolutely no other changes in the car between the differences, so I HAVE to blame the plugs. Some dealerships supply both the regular ones and the cold ones and will install the colder ones if you don't pay attention (cough***Premium Nissan of New Rochelle, NY***cough), so make sure that they are the right ones.
is there a way i can tell if i have colder runs spark plugs because i have had my service and i lost performance. my max is slow
08-09-2001, 07:43 PM
#6
Originally posted by kevlo911
is there a way i can tell if i have colder runs spark plugs because i have had my service and i lost performance. my max is slow
is there a way i can tell if i have colder runs spark plugs because i have had my service and i lost performance. my max is slow
08-09-2001, 08:03 PM
#7
my parts buddy told me today at the dealership that the NGK's 5 range and the 6 range are the same exact plug.. no diffrence.. he even showed me the refference number on the plug.. they were both the same.. so now i am confused
08-10-2001, 10:14 AM
#8
Then why would they have different numbers? Check out www.ngk.com, they list the PFR5G-11 as the OEM plug, the PFR6G-11 is a cloder plug. For more info on plugs and heat ranges, go to http://www.ngksparkplugs.com/techinf...s/overview.asp
08-10-2001, 11:11 AM
#9
Originally posted by SprintMax
my parts buddy told me today at the dealership that the NGK's 5 range and the 6 range are the same exact plug.. no diffrence.. he even showed me the refference number on the plug.. they were both the same.. so now i am confused
my parts buddy told me today at the dealership that the NGK's 5 range and the 6 range are the same exact plug.. no diffrence.. he even showed me the refference number on the plug.. they were both the same.. so now i am confused
08-10-2001, 06:09 PM
#11
All this talk made me go out and sample one of my plugs. From what I gather from the NGK website, too cold a plug may result in an oily residue or even fouling. In my case, the PFR6G-11 plug looked perfect, not oily at all. Don't know if the appearance correlates to performance but at least it probably indicates normal operation. Interestingly, before I even knew what to look for in spark plug appearance, I remember the Bosch plugs that I took out were definitely oily--though not fouled.
08-10-2001, 08:26 PM
#12
Originally posted by Mishmosh
All this talk made me go out and sample one of my plugs. From what I gather from the NGK website, too cold a plug may result in an oily residue or even fouling. In my case, the PFR6G-11 plug looked perfect, not oily at all. Don't know if the appearance correlates to performance but at least it probably indicates normal operation. Interestingly, before I even knew what to look for in spark plug appearance, I remember the Bosch plugs that I took out were definitely oily--though not fouled.
All this talk made me go out and sample one of my plugs. From what I gather from the NGK website, too cold a plug may result in an oily residue or even fouling. In my case, the PFR6G-11 plug looked perfect, not oily at all. Don't know if the appearance correlates to performance but at least it probably indicates normal operation. Interestingly, before I even knew what to look for in spark plug appearance, I remember the Bosch plugs that I took out were definitely oily--though not fouled.
You'll see what you don't want your plugs to look like.
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