In the sump there were 2 and a bit sheared off and bent screws plus some metal filings.

Then after removing the upper sump I found where they came from.

The pulse wheel is not attached I could move it by hand and wobble it about so those screws that I found in the sump must have some how sheared of the wheel which seams imposable but it has happened.Time to replace the engine as there is no way of knowing just how much damage has been done to the bottom end by those screws between coming off and making it down into the sump.