Mercury IO V6 will not start

"A 2002 carburetted V-6 Mercur

"A 2002 carburetted V-6 Mercury 4.3 liter engine. It will not start. Was out water skiing. Stopped and started several times and then nothing.Engine cranks strong but no ignition. I have checked the ignition and there is no spark. I have since checked out the ignition switch, ignition fuse, lanyard safety switch, the shift lingage kill switch, continuity tested the coil and all checked out. Is there another kill switch in this circuit? Is the ignition module the next likely candidate?

Thanks, Bob"

"Welcome Bob:

Sounds like i

"Welcome Bob:

Sounds like it is time to test the oignition system.

Tests for TB ignition: W/ignition key on AND BILGE WELL VENTILATED OF GAS FUMES!!!

#1 - Connect your voltmeter neg. lead to the engine ground and pos. lead to the white/red wire terminal at the dist. It should read 12 volts.

#2 - If 12 volts is present, remove the coil spark wire from the distributor and connect it to a spark gap tester to ground. Remove the white/green lead from the dist. terminal. Turn the ign. key to on and strike the white/green lead to ground. If there is spark, replace the ignition sensor in the dist.

#3 - If there is no spark, substitute a new coil and repeat test #2. Now if you get spark, install a new coil. NO SPARK, replace ign. amp.

#4 - In #2, if there is No voltage present, disconnect the white/red wire and check it again for 12 volts. If 12 volts is present, replace the ignition sensor inside the dist. cap. If no 12 volts present w/it disconnected--ignition amplifier is shot and must be replaced"