F150online Forums - Skipping or miss firing

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Joeboger

03-12-2019 10:43 AM

Skipping or miss firing

If I try to build boost over 5 lbs sounds like my 03 lighting is skipping or miss firing, runs good under at 5 lbs n under. What could cause this, has an after market intake n cooler

glc	03-12-2019 11:31 AM

Spark plugs.

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