Post your spark plug photos here
#1
Post your spark plug photos here
If you've taken photos of your spark plugs after removal, please share them here. Here are some of mine to start:
Engine mileage: 50k , no modifications.
BUR7EQP leading, BUR9EQP trailing. These plugs were used for at least 5000 miles:
Engine mileage: 53.5k , minor modifications (DP)
BR8EIX leading, BR9EIX trailing. After 3500 miles:
Engine mileage: 56.7k , minor mods (DP)
BUR7EQ leading, BUR9EQ trailing. After 3200 miles:
-s-
Engine mileage: 50k , no modifications.
BUR7EQP leading, BUR9EQP trailing. These plugs were used for at least 5000 miles:
Engine mileage: 53.5k , minor modifications (DP)
BR8EIX leading, BR9EIX trailing. After 3500 miles:
Engine mileage: 56.7k , minor mods (DP)
BUR7EQ leading, BUR9EQ trailing. After 3200 miles:
-s-
#2
The Man
wow dude, you've got too much time on your hands to document your plug life/performance. I run NGk race 105's and 115s at the track. Use a spark plug cleaner and some brake cleaner about every 1500miles. mine end up lookinng like the first thumbnail of the irridiums!
Art
Art
#4
www.silverbulletrx7.com
Originally Posted by RTS3GEN
wow dude, you've got too much time on your hands to document your plug life/performance. I run NGk race 105's and 115s at the track. Use a spark plug cleaner and some brake cleaner about every 1500miles. mine end up lookinng like the first thumbnail of the irridiums!
Art
Art
#5
Yes it is. Here's a photo of the same plugs, before they were installed:
I replaced them with another set of the NGK Iridiums, because of the way the electrodes held up.
I've had them in for 4k miles so far, and the idle is fine. I think I'll keep them for at least 5k. I'd like to try the new RX-8 plugs, but not at $20 per plug.
I replaced them with another set of the NGK Iridiums, because of the way the electrodes held up.
I've had them in for 4k miles so far, and the idle is fine. I think I'll keep them for at least 5k. I'd like to try the new RX-8 plugs, but not at $20 per plug.
#6
Wankel Shmankel
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What are feelings regarding the stock vs nonstock plugs?
I always thought it was "recommended" to use plat BUR7EQ leading, BUR9EQ trailing or 9s all around.
Are the br9eix the so-called racing plugs?
I always thought it was "recommended" to use plat BUR7EQ leading, BUR9EQ trailing or 9s all around.
Are the br9eix the so-called racing plugs?
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#11
EFR IWG 8374
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Ive been doing a ton of stuff to get the idle right so I have no base line for determining if plugs changed anything.
I change my plugs every other oil change, those I posted went like 3 oil changes Oops.
Can anyone tell me anything by how my plugs look?
I change my plugs every other oil change, those I posted went like 3 oil changes Oops.
Can anyone tell me anything by how my plugs look?
#13
Senior Member
iTrader: (2)
Originally Posted by POS7
What are feelings regarding the stock vs nonstock plugs?
I always thought it was "recommended" to use plat BUR7EQ leading, BUR9EQ trailing or 9s all around.
Are the br9eix the so-called racing plugs?
I always thought it was "recommended" to use plat BUR7EQ leading, BUR9EQ trailing or 9s all around.
Are the br9eix the so-called racing plugs?
Anyone have any bad experience using no-stock plugs? I am concerned because of the difference in design. The Iridiums look like conventional plugs, not the kind I have been using in my 7 since day 1.
#14
I've heard that the 'flat-face' design of stock plugs was to prevent against flooding in the FC. If that was their primary purpose, then it's redundant and unnecessary. My car has had the "regular-style" plugs for thousands of miles, hot-starts, cold-starts, and hasn't given me any trouble at all.
The BR*EIX electrode obviously holds up better than the BUR*EQ one, whether that's due to the difference in electrode design or material, the end result is that you will have less misfiring as the plugs age. The RX-8 uses a different plug design, it is closer to the BR*EIX plugs than to the OEM 86-95 BUR*EQ plugs. RX-8 plug info here: https://www.rx7club.com/3rd-generation-specific-1993-2002-16/use-rx-8-iridium-plugs-fd-391496/
NOTE: the BR*EIX plugs are not designed for a rotary, so you will need not be able to install them without a thin-walled socket. I don't think this has been mentioned yet. You can buy one (from most rotary tuners who fabricate things, such as http://www.mazdatrix.com/toolmisc.htm ), or grind your own.
-s-
The BR*EIX electrode obviously holds up better than the BUR*EQ one, whether that's due to the difference in electrode design or material, the end result is that you will have less misfiring as the plugs age. The RX-8 uses a different plug design, it is closer to the BR*EIX plugs than to the OEM 86-95 BUR*EQ plugs. RX-8 plug info here: https://www.rx7club.com/3rd-generation-specific-1993-2002-16/use-rx-8-iridium-plugs-fd-391496/
NOTE: the BR*EIX plugs are not designed for a rotary, so you will need not be able to install them without a thin-walled socket. I don't think this has been mentioned yet. You can buy one (from most rotary tuners who fabricate things, such as http://www.mazdatrix.com/toolmisc.htm ), or grind your own.
-s-
#16
VIP - Very Irish Person
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I don't remember which one is which here but one is trailing and one was leading. They were the stock plugs and had been ran for atleast 15k miles. They were on the car when i bought it. One of them was so old that the rod in the middle slid out!
BTW - tell me if the pics don't work
BTW - tell me if the pics don't work
#17
Call me gramps!
Originally Posted by tookwik
I don't remember which one is which here but one is trailing and one was leading. They were the stock plugs and had been ran for atleast 15k miles. They were on the car when i bought it. One of them was so old that the rod in the middle slid out!
BTW - tell me if the pics don't work
BTW - tell me if the pics don't work
#18
I've been using Autolite plugs for the past 1300 miles or so, here are some photos. The equivalent NGK heat ranges should be 8 leading and 10 trailing. These plugs might be a little too cold for a stock motor, but the car idles fine.
The car had been sitting for about a week, and the front leading plug was wet with fuel. Can anyone tell me what would cause this? Leaky injector?
The electrodes seem to be wearing pretty quickly; an iridium electrode would be nice. I reinstalled these plugs, and am hoping to keep them for another 1000 miles or until the idle quality declines.
-s-
The car had been sitting for about a week, and the front leading plug was wet with fuel. Can anyone tell me what would cause this? Leaky injector?
The electrodes seem to be wearing pretty quickly; an iridium electrode would be nice. I reinstalled these plugs, and am hoping to keep them for another 1000 miles or until the idle quality declines.
-s-
Last edited by scotty305; 09-13-05 at 03:19 PM.
#19
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To bring the thread back from the dead...
Can spark plugs cause the car to backfire almost like a gun shot and then stall the car?
How do people insert pictures here?
Can spark plugs cause the car to backfire almost like a gun shot and then stall the car?
How do people insert pictures here?
Last edited by ghost-rider; 09-27-06 at 05:06 PM.
#23
Wow, your plugs looking terrible.
Mine looked like tookwiks plugs, i also had the same plugs, BUT some previous owner installed NGK BUR9EQP in trailing and leading, so no BUR7EQP has been installed.
My car wont start now, there´s a lot of fuel in the chambers. I will change plugs and cables now, lets see if something changes.
My car is stock, only aftermarket BLITZ exhaust.
And yes, how often do you change your plugs???? Every oilchange seems VERY often for me...
mfg
Andi
Mine looked like tookwiks plugs, i also had the same plugs, BUT some previous owner installed NGK BUR9EQP in trailing and leading, so no BUR7EQP has been installed.
My car wont start now, there´s a lot of fuel in the chambers. I will change plugs and cables now, lets see if something changes.
My car is stock, only aftermarket BLITZ exhaust.
And yes, how often do you change your plugs???? Every oilchange seems VERY often for me...
mfg
Andi