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Old 12-11-2012, 07:43 AM   #6
Focus Rookie
Join Date: Dec 2012
Fan#: 107171
Location: Romulus, MI
What I Drive: 2000 se wagon

Posts: 2
FF Reputation: 1 propbreaker Good Standing Member
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I read thru the valve seat issue. I bore scoped the cylinders no valve seat issue. I think this is electrical or bad gas. There plugs were pitch black and smelled like bad fuel. The wife just filled it up and drove over 20 miles before it started missing. The only code was for downstream O2 no heated circuit. The car has over 260k not sure if the engine has that on it. Anyone have mass airflow go bad without a code?
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