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It doesn't do it if I floor it just when I'm accelerating normally. I've changed spark plugs. I've switch the coils to different plugs to see if it changed anything and the first cylinder is for sure...

I'm stumped. Could the fuel filter cause this?. It really does not have a good exhaust. It leaks really bad. It's mainly when it gets warmed up. When I first start it in the morning and shortly after...

It's the 4.6 and I have a diagnostic tool. It showed me a code for misfire so I replaced the coils and spark plugs I'm thinking it's the egr valve

Try the idle air control valve

Like an electrical burning smell?

I have a 2001 Ford F1 50 at first it was misfiring on cylinders one and two I replaced the spark plugs and changes the coils and now as I accelerate truck starts to sputter