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SVT Performance (2002-2004) The place to chat about any 2.0L SVT DOHC Zetec engine performance, tuning and exhaust related upgrades.

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Old 12-06-2009, 02:56 PM   #11
blackjack
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Join Date: Oct 2009
Fan#: 69988
Location: Socal & Portland, OR
What I Drive: Black 03 SVT

Posts: 994
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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.
WOW, will be checking mine tonight.


Is there any gains with a COP set up on the SVT?
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