Can someobdy read these plugs for me?
Thread Starter
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Joined: Dec 2007
Posts: 245
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Can someobdy read these plugs for me?
NGK PFR7G11S
Just pulled my plugs to check on them. Anybody want to give them a quick read?
Any recommendation on new plugs if needed?
http://imageshack.us/g/717/img1275zt.jpg
Just pulled my plugs to check on them. Anybody want to give them a quick read?
Any recommendation on new plugs if needed?
http://imageshack.us/g/717/img1275zt.jpg
Thread Starter
Registered User
Joined: Dec 2007
Posts: 245
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Registered User
Joined: Mar 2010
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From: lakes region NH
What are you trying to monitor with the reading?
If it's WOT timing or air fuel ration you need to do a wot pull, shut the car off right at the peak rpm, coast to a stop, then remove them
If you do a pull then drive around all you are seeing is how the mixture is burning at idle or cruising speeds
Overall they look fine to me but the pics and lighting leave something to be desired, and you didn't mention under what conditions you pulled them so it's hard to read them since we don't know what to look for
Come back with more info sir!
If it's WOT timing or air fuel ration you need to do a wot pull, shut the car off right at the peak rpm, coast to a stop, then remove them
If you do a pull then drive around all you are seeing is how the mixture is burning at idle or cruising speeds
Overall they look fine to me but the pics and lighting leave something to be desired, and you didn't mention under what conditions you pulled them so it's hard to read them since we don't know what to look for
Come back with more info sir!
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Joined: Jun 2007
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How many miles on them? They look a bit on the sooty side, also see some crust and a little popcorn. Overall they aren't terrible looking, but mileage would be a good thing to know. You look like your running rich, likely under vtec which is leaving a sooty residue, but then running lean in the higher rpms, leaving the whitish crust and popcorn from slight detonation/heat. My recommendation would be to run the appropriate heat range plug which is one heat range colder then stock #8. I assume your running just the rising rate fpr for fuel management so You may not be able to fine tune your afr, but if you can through some means like a vafc, do it. The plugs I use are the NGKBR8IEX -2668
Thread Starter
Registered User
Joined: Dec 2007
Posts: 245
Likes: 0
How many miles on them? They look a bit on the sooty side, also see some crust and a little popcorn. Overall they aren't terrible looking, but mileage would be a good thing to know. You look like your running rich, likely under vtec which is leaving a sooty residue, but then running lean in the higher rpms, leaving the whitish crust and popcorn from slight detonation/heat. My recommendation would be to run the appropriate heat range plug which is one heat range colder then stock #8. I assume your running just the rising rate fpr for fuel management so You may not be able to fine tune your afr, but if you can through some means like a vafc, do it. The plugs I use are the NGKBR8IEX -2668
