spark plug analysis please?
02-10-2008, 07:11 PM
#1
No means yes
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spark plug analysis please?
Just changed out my plugs today and would appreciate some comments 
These were supposed to have been changed by the dealer when I bought the car a year ago, but looking at them that doesn't seem to likely. 
Anyway, thoughts?
These were supposed to have been changed by the dealer when I bought the car a year ago, but looking at them that doesn't seem to likely. Anyway, thoughts?
02-10-2008, 07:18 PM
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No means yes
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yep i put in a new set. the slightly worn electrodes seem to indicate they were in too long, and the baked on crap could be ash from the oil injection?
02-10-2008, 07:36 PM
#4
Extraordinary Engineering
^^ Yup, oil injection leaves those deposits. As stated before, your engine needs a little bit more redline time. As for the dealer... well that's what you get trusting the dealer to work on your car.
Does anyone using the Sohn OMP adaptor and 2 stroke oil have a picture of their plugs?
Does anyone using the Sohn OMP adaptor and 2 stroke oil have a picture of their plugs?
02-10-2008, 07:58 PM
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02-10-2008, 09:08 PM
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I'd think that premix would have less to do with the ash buildup than the dirty *** engine oil... I premix 7oz, but only started very recently. I'll keep checking the plugs and see what they look like...
On another note, if I ever find the person who last installed plugs in my car I'll buy them a beer. After reading some horror stories on here I was afraid they were going to be impossible to get out, but they ended up coming out quite easily. Anti-seize FTMFW!
On another note, if I ever find the person who last installed plugs in my car I'll buy them a beer. After reading some horror stories on here I was afraid they were going to be impossible to get out, but they ended up coming out quite easily. Anti-seize FTMFW!
02-10-2008, 09:13 PM
#12
1. I don't use OEM plugs. I use the colder RX-7 ones.
2. I'm turbocharged. And I run it hard.
3. I change my plugs once a year.
4. I run the Sohn adaptor with 2 stroke oil.
5. I use FP and LC additives.
Anyway, here it is. It's hard to tell from the photo, but it's solid black, or light color. They don't look grungy like the OP's plugs.
02-10-2008, 10:44 PM
#16
The Professor
02-10-2008, 11:05 PM
#17
that looks kinda like mine, I have a little brown-ish stuff, but mostly black. and It was OEM 7 heat range plugs.
Im using 2 steps colder plugs now. After 10 K miles, Im gonna pull it out to look at it. I expect it to be a lot worst than stock heat range.
but it pulls harder than stock tho.
Then Im gonna use the 6 heat range plugs again.
Im using 2 steps colder plugs now. After 10 K miles, Im gonna pull it out to look at it. I expect it to be a lot worst than stock heat range.
but it pulls harder than stock tho.
Then Im gonna use the 6 heat range plugs again.
02-11-2008, 11:33 PM
#21
Extraordinary Engineering
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