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Old 03-05-2013, 08:11 PM   #1
Focus Jr. Enthusiast
Join Date: Feb 2013
Fan#: 110560
Location: bristol, TN
What I Drive: 2001 maroon focus

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Engine running very rough

Got my 2001 Focus w/SPI back on the road the other day after replacing the head. The engine ran flawlessly for a couple of days until today..I was driving along and the engine died. I coasted to a stop and it restarted fine but began to run very rough and stumbling after a mile or so. Was close to home and when I pulled into the drive I turned it off and could smell a strong sulphur smell(dont think the cat is stopped up because it looked fine when I bolted it up to manifold). Anyways, I checked for loose hoses/connectors and unplugged most connectors one at a time and restarted only to have it run Very rough each time. Also pulled plugs and they are all black and sooty indicating a rich condition.(plugs are new and looked fine 2 days before) Any ideas what this might be and where to start troubleshooting? Any help would be much appreciated.

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