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Old 09-28-2009, 10:18 PM   #341
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as promised.. pics

Look at the number 3 plug, and look at the wear on all the other plugs (platinum autolite plugs) 56k miles on the svt when I changed the plugs. (I bought the car with 55.5k)




edit: I gapped it at 60.
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Old 09-28-2009, 10:53 PM   #342
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you gapped the Coppers at .60 and noticed good performance? cool. I have them sitting in the garage waiting for 50,000 miles when I'll switch.

Is that the electrode on the #3 plug that died?
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Old 09-29-2009, 08:10 AM   #343
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Yeah that 3rd plug died pretty good there. No electrode, no sparky.
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Old 09-29-2009, 10:39 AM   #344
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Quote:
Originally Posted by MichSVT View Post
you gapped the Coppers at .60 and noticed good performance? cool. I have them sitting in the garage waiting for 50,000 miles when I'll switch.

Is that the electrode on the #3 plug that died?
I think the "performance" i feel is from the fact that the #3 plug was pretty much dead. It does idle so much better though, thats the best part the car seems smoother.

Quote:
Originally Posted by macdiesel View Post
Yeah that 3rd plug died pretty good there. No electrode, no sparky.
This may have been why it had a rough time starting, its slightly better but still doesnt start up as fast as i would like.


if you look close at that last picture, the #3 plug, looks like it is bent in a little bit, more than the others, I hope it didnt make contact with the piston/or isnt still doing so.
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Old 09-29-2009, 12:13 PM   #345
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Check that #3 cylinder!

Do you have an aftermarket tune?
You might want to get a hold of your tuner if so.
Looks like #3 is running really lean.
This is a very common problem on these cars, and you should have it looked at before something goes...BOOM...
If you search around these forums, you'll see that about 50% of the engine failures are due to the #3 piston losing it's upper ring land because it was running too lean.

Not trying to scare you, but if it were me I'd want to get that looked at.
FWIW, here's my observations on that same plug:
http://www.focusfanatics.com/forum/s...ad.php?t=86929
I made sure all the intake to head hose clamps were tight, ran a can of injector cleaner through it, and had the tune adjusted slightly.
Haven't seen a lean problem in that cylinder since then.
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Old 09-29-2009, 09:46 PM   #346
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Quote:
Originally Posted by WD40 View Post
Do you have an aftermarket tune?
You might want to get a hold of your tuner if so.
Looks like #3 is running really lean.
This is a very common problem on these cars, and you should have it looked at before something goes...BOOM...
If you search around these forums, you'll see that about 50% of the engine failures are due to the #3 piston losing it's upper ring land because it was running too lean.

Not trying to scare you, but if it were me I'd want to get that looked at.
FWIW, here's my observations on that same plug:
http://www.focusfanatics.com/forum/s...ad.php?t=86929
I made sure all the intake to head hose clamps were tight, ran a can of injector cleaner through it, and had the tune adjusted slightly.
Haven't seen a lean problem in that cylinder since then.
That is scary info, bro. I bought the car used, I am almost sure it has no tune, as I drove 3 svt's before buying this one. I was planning on getting tom's tune at some point...

I will check into it, and see what I can do. after seeing this and reading your link, i think others should check their #3 plugs.
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Old 09-30-2009, 12:23 PM   #347
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Quote:
Originally Posted by unst4bl3 View Post
I was planning on getting tom's tune at some point...
Good choice, and he will definitely know how to cure the #3 problem.
^^^Most likely by having you send him some datlogs.
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Old 12-03-2009, 12:05 PM   #348
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Short threads?

Almost just purchased a set of AZFS22C sparkplugs online. I noticed in several online pictures that these plugs only have half the thread length of the stock platinum plugs? I wasn't too sure about this so I didn't purchase them (yet).

My Zetec is completely stock (compression, etc.), but this shorter thread length kinda worries me with regards to not screwing up (no pun intended) the threads in the aluminum cyl. head.

I know a lot of people on here are using these plugs with success however. Any thoughts on this shorter thread thingy?
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Old 12-03-2009, 12:59 PM   #349
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Even though the threads appear to be shorter I can assure you they fit perfectly into the head/combustion chamber..... when I had the head off I checked all the clearences.
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Old 12-03-2009, 01:00 PM   #350
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Adventure-Biker;
See my post (#345), just 3 above yours...
Check out that link, as I discussed the very issue you noticed.
Or...
Click here:
http://www.focusfanatics.com/forum/s...ad.php?t=86929
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