Engine running rough!!
I got a 97 4.2 v6 2 wd f 150.
Replaced the cats got them switched from 4 to 2.
New coil pack spark plugs wires.
Air filter is good got exxon premium gasoline.
I drive it and its like really rough, I go up a big bridge every day and it just struggles to get any power while I'm on it.
I'm not very mechanically inclined and don't have money to take it somewhere.
I did notice tho when I changed the sparks, spark plug number 1 was burnt to black.
I changed them again and its better but still runs rough.
Anybody got any ideas for me? Would be very appreciated thank you.
Oh also its starting to squeal but only when I shut the engine off .
I've read up on a vaccuum leak but man I don't even know where to begin in that area.