loosing prime 9.9 merc

[weve54]

i keep loosing prime at low rpm. please help.......thanks

[boats.net]

If engine is running out of gas then could be bad fuel pump, fuel hoses or hose connections.

[JUST-IN-TIME]

or the gas cap
run with it off
if it was fuel pump you will have over oil if 4 stroke
if 2 stroke wet bottom plug