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runs rough on first start up and wont accelerate, when warm runs great
Vehicle: 2003 Ford 250 super duty 6.0 diesel

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HI there

This code usually indicates a possible issue with a plugged or partially plugged injector. Here is some more info on the code for you.

P0263 FORD - Cylinder 1 Injector Contribution/Balance Fault

Read more: https://www.autocodes.com/p0263_ford.html

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