"jocast" wrote in message
ups.com...
Hello
i just bought a used 50hp mercury and they told me that the power pack
was not working fine. so i bougt one, i exchanged it but the problem
still there. It is not sparking what else could be worng?
or how can i check if the power packc are good i have 3 PP's i already
tried them and nothing. any ideas.

How can i test the PP's?

You can't properly test the power packs as it takes special equipment. You
can try asking here http://www.iboats.com/cgi-bin/ubb/ultimatebb.cgi
but you need to give a little more info like year and serial no would help
too. Check the FAQs there for "motor won't start"