multiple random misfires on cylinder 5,6,7,8
98 F150 4X4 4.6
got codes for misfire on 5, 6, 7, and 8 as well as code for random multiple misfire and running lean
have been driving through a lot of snow in the last day or two which actually plugged my air cleaner badly! so i cleaned and dried it and ran my truck for a couple hours until engine/plugs etc was all dry, tried driving it and still got the same codes again
im not sure where to start, is it possible to be a fuel issue or sensor, being that i keep having misfires on the same 4 cylinders only?
thanks for any tips