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Old 01-11-2013, 03:57 PM   #33
Focus Jr. Enthusiast
Join Date: Jan 2013
Fan#: 108061
Location: huntington, WV
What I Drive: 2002 black zx5

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Originally Posted by top-ace View Post
i am having the exact same problem with my zetec zts. I have replaced plugs, wires, coil pack, fuel filter, air filter, pcv valve and hose, oxygen sensor, dpfe sensor, egr solenoid, probably more i cant remember. I have a snap-on solus scanner and do not see any problems. Fuel trim is at a rock solid plus or minus 2, so no vacuum leak.

It is also stumbling when very cold at start up. Also less power going up hills.

I am getting around 24-25 maximum mpg all long distance highway, much worse in city. Honsetly at this point, i think the timing is slightly off. Maybe the exaust side cam timing is off a few degrees, which i know can cause these symptoms.
that is what im thinking too to do my t-belt but i wanna put new cam gears on it when i do but cant find any adjustable ones...
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