GM / General Motors: Spark plug question

clevere wrote: 

NO! All parts of the plug should be firmly attached.
Does it otherwise look ok? No mashing, burning, etc. of the electrodes?
Sounds like it broke internally. It was probably just a poorly
manufactured plug (they can't all be perfect) or it somehow
got damaged.

Replace the plug and check into it's warranty provisions. That plug is
damaged and it doesn't make sense to continue using it. But now you have to
figure out WHY it became damaged...even so, just change it.

"clevere" <net> wrote in message
news:9bZrb.121628$.. 
and 
noticed 
checked 
electrode 

Thanks guys, I knew that wasn't right, but I wasn't 100% sure .. (sounds
wierd huh). Anyway, otherwise the plug looks normal, except for the
electrode part, instead of being flat, it's a little rounded. Almost like it
got a little hot. Kind of like the picture at this link:

www.mztech.fsnet.co.uk/ images/plugs/plug9.gif

except it's overall condition is a hell of a lot better. The only portion
that looks similar is the sounded head of the electrode (instead of being
flat). The length of the electrode looks fine, and the ceramic looks ok, so
I don't think the piston it it. Maybe the gap was off? I've NEVER in my
life had a plug wiggle like this...

"clevere" <net> wrote in message
news:9bZrb.121628$.. 
and 
noticed 
checked 
electrode 

Clevere if the center electrodes of your plugs look rounded like that you
are way overdue for a change. You most likely need new wires as well. Go
get some new plugs and wires. Stay away from bosch and champions,
Autolites and ac delco's are good. Check your new wires with an ohm meter
to make sure they are good (yes new wire sets are known to have bad ones).
Just to be sure you know that if you have to pull a wire back off only
pull from the boot. If you pull on the wire you will damage it.



In article <w8_rb.167365$Tr4.451462@attbi_s03>, net says... 

The plugs and wires are less than 1 year, or 15k miles old. So I'm not sure
what in the hell is causing that problem. I will check the wire when I
replace the plug tonight. Thanks for the tip!


"Bon·ne·ville" <sp@m.b.gone> wrote in message
news:woh.rr.com... 
like it 
portion 
being 
so 
wires, 
firing) 
the 




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how many ohms should a good plug wire read???



"clevere" <net> wrote in message
news:3fb113d7$newsgroups.com... 
sure 
you 
meter 
ones). 
(sounds 
ok, 
my 
into 

WHO?? wrote: 

Less than 15k. 5k to 7.5k would be very nice.
11k is still ok.

In general conventional plug wires have a resistance of 10,000 to 15,000
ohms per foot of length. For cables less than 25 inches in length,
resistance generally should not exceed 30,000 ohms. For those over 25
inches in length, the maximum acceptable reading is 50,000 ohms.
Specifications vary with car makes so checking with your service manual is
a good idea. If you run platinum plugs you might want good low resistance
wires because Platinum plugs in of themselves have a higher resistance
than a plain copper plugs. Usually none of my new wires I use go above 5k
ohms and I return them if any read over 25k-30k ohms. Returning wires are
easier than dishing out money for replacing a damaged coil.
When installing new plugs its not a bad idea to use a very "thin!"
coating of high temp anti-seize compound near the top of the plugs
threads. I say top because people sometimes get a glob of anti-seize on
the electrodes and then that plug becomes fouled...



In article <3fb16152@Anduin>, com says...