[Bruce]

I was reading in the manual and under index engine .... i cant remember what page. but it actually said in there that you might hear a rattle noise from a cold start for a few minutes until it warms up and it will go away. So this could be the noise. I know everybody is pretty good here about helping and fixing things. But maybe the answer was in the manual the whole time and just overlookes.
I will get my manual out and find the exact page.