Hello, I own a 2001 f150 with a fresh-er engine (installed 2 yrs ago with 30,000 miles on it. the truck has 187,000 on it.) and I'm having trouble with the truck..... was running fine, but all of the sudden, starts- barely runs- real rough. The theft light now flashes, and the service engine light on. scanned codes show #2 cylinder misfire. just had all the coils and plugs replaced, but the truck sounds like the converter may e plugged, or muffler collapsed or somthing like that. It had develloped an exhaust leak recently, and now that leak is much loader when the engine starts. It was nearly out of gas when this occured, but I've added 2.5 gal of fuel and turn on the ignition to let the fuel pump do any pumping if it needed any, but stil sounds horribly bad and misfires all to hell. Any of you folks had anything like this happen?

 

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