Unfortunately im not as mechanically minded as i would like. this is a picture of the hand primer pump that started leaking for no apparent reason. In the green circle is where it is leaking from, is spatters out of there when the machine is running, and when turned off if i pump the leaver then it slowly pumps diesel out of there. Also this morning when i tried to start it it started for about 10 sec then stalled, then took several attempts of cranking the engine before it started again, which i now realize that the fuel in the lines must have drained out in between the injectors and the primer pump, and the engine ran out of fuel momentarily. anyway point is i dont know why it is leaking or how to stop it!
Replace the whole thing, they are relativity inexpensive and really easy to change. The diaphragm has a hole in it and is leaking out the weep hole.
thanks for the advice, ordered a new one