Davidosik
Member
Hi newbie here I have a p reg p38 4.7 v8 and I have an issue with 2000 revs cut long story short I replaced my rocker covet gaskets and had to remove the plenum to access bolt o have replace all stuff back on and now I have erratic revs at 2000 revs but i did notice a bit of gunk in plenum and thought nothing of it as it don' do many miles a year pls help some one I'm from the Midlands