2001 f-150 missfire
 

Hey new user I have an 01 5.4 Triton with engine light on I put it on the scanner and it read miss fire on cylinder 6 and 1 I changed the cops and plugs boots and spring erased the codes but the check light is back on and scanner is say miss fire on same two cylinders u can hear it in the exhaust u can smell gas when sitting at an idel around 40 MPH has a slight engine shake goes away when u accelerate I am not sure what else to do some one told me to check for vac leaks and fuel pressure any one have any ideals any advice greatly appreciated thanks

Maybe change the sparkplugs?

cops? did you change the spark plugs or the coils?
Swap # 6 & 1 coils to 2 other cylinders, see if the missfire's
migrate with them.

Do not keep driving the truck in this condition or you stand to burn both sides cats.
Then you will be in for more than 2 cylinders missfiring for cost and hassle.
Non firing cylinders burns gas in the cats and can melt them.
Good luck.

I agree Bluegrass
With 2 misfiring cylinders the CEL should of been flashing

Same issue
 

I had much the same issue. Changed the plugs and the problem was solved.