when I try the spark test I get no spark at all. Has a new plug and on-off switch. I ordered a new coil/module and in stalled it but still no luck. The coil is grounded when screwed down. Should it be grounded? I used a ohm meter to compare the new ignition and old and they come out the same. when installed they are both grounded. not sure where to go next.....if they are not to be grounded then how would I install them.