Honda Car Forum

#1 (**permalink**) 27 Nov 2004, 09:08 am

http://pg.photos.yahoo.com/ph/acfang...da.jpg&.src=ph

this is the spark plug from a 97 integra gsr that was changed about 20k
ago. The electrode looks fine, but I wonder if the black ring near the
threads means anything. My car has a little bit of pinging even though
I run 91 octane, and it has a knock sensor. I dumped some water down
the throttle body a while ago, and I guess that didn't cure the problem.

#2 (**permalink**) 27 Nov 2004, 12:20 pm

Looks normal, some carbon will migrate to the lower plug threads.
"alan" <no-longer-valid@yahoo.com> wrote in message
news:coa1s9$13m$1@news.Stanford.EDU...
> http://pg.photos.yahoo.com/ph/acfang...da.jpg&.src=ph
>
> this is the spark plug from a 97 integra gsr that was changed about 20k
> ago. The electrode looks fine, but I wonder if the black ring near the
> threads means anything. My car has a little bit of pinging even though I
> run 91 octane, and it has a knock sensor. I dumped some water down the
> throttle body a while ago, and I guess that didn't cure the problem.

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#3 (**permalink**) 27 Nov 2004, 06:04 pm

no. the plug is fine, but high mileage. if it's pinging, try a
different brand of gas, /after/ you've had the timing checked. if it's
still pinging, check the knock sensor & its connection.

alan wrote:
> http://pg.photos.yahoo.com/ph/acfang...da.jpg&.src=ph
>
> this is the spark plug from a 97 integra gsr that was changed about 20k
> ago. The electrode looks fine, but I wonder if the black ring near the
> threads means anything. My car has a little bit of pinging even though
> I run 91 octane, and it has a knock sensor. I dumped some water down
> the throttle body a while ago, and I guess that didn't cure the problem.

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