[kcv2550]

I have a 2000 range rover 4.6 hse and it has a steady misfire on cylinder 5. The plug keeps fouling out, and when I put seafoam in it gets better, but only for a little wile. I have replaced plugs wires oxygen sensors intake gaskets and I don't know what it could be.
thanks!

 

[reverendALC]

Have you checked the injector or visually inspected the cylinder?

 

[kcv2550]

yes I have. I think it might be a valve not seating right. the dealer told me it was coils but its only on one cylinder.