OK weird yes that's right weird.I don't know what was going on,but I have a motto.That is never give up,so keeping that in mind I decided to pull it apart again right down to pulling the plate off and resealing it.Not that it needed it,it was all good.I put it back to together except the fuel tank.I sprayed some start you bastard and pulled the cord,it fired.I thought, WHAT??So I put the tank on gave it some fuel and right there on the first pull away it ran.Like it never had a problem.So I'm happy to say that the mower affectionately know as Brum Brum is now back to running.I don't know what was wrong but it's not now.I'd like to thank everybody for there help.There was quite a few good ideas in there.It's great to know that when these problems come up there is people that are happy to help.
Thanks all.