I have a 1974 Evinrude 70hp and i was out last night fishing i was idling along slow about 6-8mph at dark and it just died like i cut the switch off. I thought well maybe it ran out of gas so i check the tank still had gas. I pumped the bulb a few times it was tight. Tried and tried and tried to get it to crank back nothing. We ended up having to troll about 2 miles back to the dock which took us about 3 hours. Got it home parked it till today and check the plugs on my lawn mower to see if they was firing. They fired perfect on it. I unhooked the gas line and turned the engine over with spark plugs out thinking may just have flooded and left gas line unhooked and sprayed starting fluid in all 3 cylinders and turned it over with nothing. All 3 cylinders wont fire I'm assuming, i cant get back there to check them with a spark plug by myself but i know when my coil died on #2 it still ran just missed. Where do i need to start with no fire at all? I have a repair manual on it but doesnt really have a trouble shooting guide in it.