Re: Whats goin on in my engine??

#1

Salutations:

Skittles24 wrote:

Quote:

Here is a pic ( not a great one ) of a plug from my 2.3 (no turbo) 60K miles
on mtr, 10Kmiles on plus. If you look closely, you will see that one side of
the plug is tan while the other side is sooty black. Three of my plugs were
like that. The fourth was all tan , as I would expect to see. I took them to
a mechanic friend of mine and he has never seen plugs like that before.
Anyone know what caused it? There was no performance difference after I
replaced the plugs, so maybe there is nothing to worry about. Any comments
welcome?

[Image]

I wonder if you may have a weepy injector - and that gap looks a just
little irregular from here as well. Have a peak around here if you are
using a fuel additive - it almost looks like a 'splash deposit':

http://www.nightrider.com/biketech/spkplghnbook.htm#We

--

J Dexter - webmaster - http://www.dexterdyne.org/
all tunes - no cookies no subscription no weather no ads
no news no phone in - RealAudio 8+ Required - all the Time

Radio Free Dexterdyne Top Tune o'be-do-da-day
Louis Prima Keely Smith - Hey Boy Hey Girl
http://www.dexterdyne.org/888/146.RAM

#2

The plug gap was fine...just looks strange because of the low electrode.
They were Bosh Platinum. They do look like the last one in that group of
pics with the additive splash. Since I dont use additives, it must be
something in the Esso gas I use. I will put another 1k on the old girl and
check the new plugs. If I still have the deposits, I will switch brands of
fuel for a few thou and see what happens. nd yes the new plugs are the
factory recommended type in my manual.

"Dexter J" <lamealameadingdong (AT) lamelamelame (DOT) org> wrote

Quote:

Salutations:

Skittles24 wrote:

Here is a pic ( not a great one ) of a plug from my 2.3 (no turbo) 60K
miles
on mtr, 10Kmiles on plus. If you look closely, you will see that one
side of
the plug is tan while the other side is sooty black. Three of my plugs
were
like that. The fourth was all tan , as I would expect to see. I took
them to
a mechanic friend of mine and he has never seen plugs like that before.
Anyone know what caused it? There was no performance difference after
I
replaced the plugs, so maybe there is nothing to worry about. Any
comments
welcome?

[Image]

I wonder if you may have a weepy injector - and that gap looks a just
little irregular from here as well. Have a peak around here if you are
using a fuel additive - it almost looks like a 'splash deposit':

http://www.nightrider.com/biketech/spkplghnbook.htm#We

--

J Dexter - webmaster - http://www.dexterdyne.org/
all tunes - no cookies no subscription no weather no ads
no news no phone in - RealAudio 8+ Required - all the Time

Radio Free Dexterdyne Top Tune o'be-do-da-day
Louis Prima Keely Smith - Hey Boy Hey Girl
http://www.dexterdyne.org/888/146.RAM

#3

On Thu, 18 Sep 2003 00:38:23 GMT, Skittles24 <skittles (AT) hotmail (DOT) com> wrote:

Quote:

The plug gap was fine...just looks strange because of the low electrode.
They were Bosh Platinum.

Ah. Yes, I tried those long ago too, as have lots of folks here, only
to find they don't do well with a Saab.

Quote:

They do look like the last one in that group of
pics with the additive splash. Since I dont use additives, it must be
something in the Esso gas I use. I will put another 1k on the old girl and
check the new plugs. If I still have the deposits, I will switch brands of
fuel for a few thou and see what happens. nd yes the new plugs are the
factory recommended type in my manual.

Your manual recommends Bosch Platinums? Every manual I've seen for the
last two decades or so of production has listed NGK. What year/model/
engine/market?

Dave Hinz

#4

Dave Hinz wrote:

Quote:

Your manual recommends Bosch Platinums? Every manual I've seen for the
last two decades or so of production has listed NGK. What year/model/
engine/market?

Quite - I've never seen a Saab manual recommend any Bosch plugs.

--
Grunff

#5

Hi,

Quote:

They do look like the last one in that group of
pics with the additive splash. Since I dont use additives, it must be
something in the Esso gas I use. I will put another 1k on the old girl and
check the new plugs. If I still have the deposits, I will switch brands of
fuel for a few thou and see what happens. nd yes the new plugs are the
factory recommended type in my manual.

Your manual recommends Bosch Platinums? Every manual I've seen for the
last two decades or so of production has listed NGK. What year/model/
engine/market?

i had a 9000i 2.0 and if i remember correctly the manual recommends NGK BPC5ES plugs, no word about bosch.
i heard from people that the bosch platinums dont perform worse than the NGK plugs in the NA engine.
but they are surely not neccessary and wont give you any benefit. to the OP: everything of the Ignition/Injection system
on your car is made by bosch, just the plugs are made by NGK. think about it, saab must have thought about something.
absolute no-no are Bosch Platinums in turbo engines! just original NGK dont accept substitutes

bye

simon

#6

Hi,

Quote:

Whoa! You'r gettin off on a tangent . Look back a bit, I never said that
any Saab manual recommends platinum plugs. What was written was: the new
plugs I installed were the type recommended by the saab manual.....and yes
in deed... they wus NKG BCPR6ES. Obviously the platinum plug in the photo
was from the old batch I removed. Now I will run the NKGs for a few
thousand and see if I still get the same deposit pattern.

i just meant to post this for all the other people that read this newsgroup,
so they know they shouldnt use Bosch plugs.
i didnt mean to say that you were using the wrong plugs, just to point out
that there has to be a reason for using NGKs. didnt mean to offend you, really,
if i did i am sorry. good luck !

bye

simon

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Re: Whats goin on in my engine??

Saab Saab Automobiles Discussions (alt.autos.saab)

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Re: Whats goin on in my engine?? - 09-17-2003 , 08:38 PM

Re: Whats goin on in my engine?? - 09-18-2003 , 08:13 AM

Re: Whats goin on in my engine?? - 09-18-2003 , 12:10 PM

Re: Whats goin on in my engine?? - 09-18-2003 , 12:14 PM

Re: Whats goin on in my engine?? - 09-19-2003 , 11:42 AM