3rd Generation Specific (1993-2002) 1993-2002 Discussion including performance modifications and Technical Support Sections.
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How do these sparkplugs look?

Old Jun 18, 2006 | 01:54 AM
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How do these sparkplugs look?

I wasn't sure what they were supposed to look like and just now got pics. I changed them last week. Lemme know what you see. Thanks!
Attached Thumbnails How do these sparkplugs look?-rawr.jpg  
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Old Jun 18, 2006 | 01:57 AM
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They look fine to me. The tan coloration is normal. That's what my plugs looked like when I took them out.
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Old Jun 18, 2006 | 02:02 AM
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Yah, figured tan was ok, was more concerned about the ridiculously black one(far right) and the one with white streaks(far left).
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Old Jun 18, 2006 | 02:08 AM
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There's a section in the FAQ with spark plug photos and analysis, but it's a dead link now. Bummer.
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Old Jun 18, 2006 | 02:11 AM
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I found this. Maybe it can be of use.


https://www.rx7club.com/3rd-generation-specific-1993-2002-16/post-your-spark-plug-photos-here-417119/
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Old Jun 18, 2006 | 02:20 AM
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How many miles on the plugs? Looks a bit lean to me boss, mine are always dark lol
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Old Jun 18, 2006 | 01:26 PM
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Yah, not sure on the mileage, those were the ones that came with my car, motor was rebuilt not but 3k miles ago, I would assume spark plugs changed at the same time? :/
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Old Jun 18, 2006 | 01:28 PM
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I have another question regarding spark. I jsut switched from 7/9 to all 9's and I noticed a considerable increase in spark time when starting the car. It cranks a few times then finally fires up, is this due to the all 9s? Or did I mess sometihng up? :/
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Old Jun 18, 2006 | 01:30 PM
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Originally Posted by seanbrowning
I have another question regarding spark. I jsut switched from 7/9 to all 9's and I noticed a considerable increase in spark time when starting the car. It cranks a few times then finally fires up, is this due to the all 9s? Or did I mess sometihng up? :/

Whats a few times?

And did you torque them down correctly?
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Old Jun 18, 2006 | 01:56 PM
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Originally Posted by ulost2my7
Whats a few times?

And did you torque them down correctly?

I torqued them based on the 1/4-1/2 turn or whatever the box says. I don't have a torque wrench so i can't actually know for sure. I am guessing I didn't torque them right. I would say it cranks for 3-5 seconds and then fires up, as before it would be a quick 1-2 and on. :/

EDIT: And the 1/4-1/2 turn was a guess because of the cramped quarters around the plugs, so I don't even know if i did that right.
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Old Jun 18, 2006 | 04:28 PM
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Originally Posted by kuroi FD
How many miles on the plugs? Looks a bit lean to me boss, mine are always dark lol
Unless you actually do a "plug chop" (running the engine hard for a while and then chopping the throttle/shutting off the motor simultaneously), you cannot tell a/f ratios by the color of the plugs. Even a few seconds of part-throttle running will significantly discolor the plug porcelain (which is where you must actually examine to do any a/f ratio diagnosis).
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Old Jun 18, 2006 | 04:35 PM
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Originally Posted by seanbrowning
I wasn't sure what they were supposed to look like and just now got pics. I changed them last week. Lemme know what you see.
Your plugs look fine.
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Old Jun 18, 2006 | 07:00 PM
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+1 on the fineessss. and kento is right all you can realy tell is if they have been burning oil, coolant etc for a long time

you in tampa??
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Old Jun 18, 2006 | 07:07 PM
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Yah. Odessa 33556 zip. you?
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