2003 expo
Fleet Owner
Joined: Apr 2008
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You have a cylinder that isn't firing. The flashing light is a warning that too much raw fuel is in the exhaust system and has the potential to destroy your catalytic converters.
You're looking at replacing one or more spark plugs or COPs.
You're looking at replacing one or more spark plugs or COPs.
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Joined: Dec 2008
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2003 expo
Changed plugs and boots, starts right away but still sputters. DTC #7 cylinder misfire. Purchased a coil at Nu-way auto for the ridiculous price of $60+, installed and every thing is A-OK. Couldn't wait 4-5 days shipping or could have cost less than $20 on Ebay.
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dadstruck
1961 - 1966 F-100 & Larger F-Series Trucks
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Feb 23, 2025 06:53 AM
