Re: 1971 johnson 100hp HELP!!
yes i squeeze the primer bulb till its hard, pull out the manual choke, put the start/run lever on start and turn the key once it starts push the choke wait till its warm and put the lever on run. i mentioned flooding because it was a problem i was having and i believe it was happening due to lack of spark, i am just lost because if the amplifier was shot i should have no spark at all, but that is not the case i do have spark it is just very minimal ie i had someone crank the motor over while holding a metal object in the plug wire haha dumb i know but effective, i should have recieved a pretty good shock and it barely tingled and even holding a brand new plug up to the block to visually check for spark it is very minute i checked this coming from the coil and from the plugs same result both places VERY LITTLE spark after that i tested voltage to the amplifier assembly all wires except the blue one leading to the coil read 11.6 the blue one showed nothing how is this possible and what do i need to do to fix my boat ? any help at all is greatly appreciated
And just why do you think you should have a measurable voltage on the blue wire? That wire carries about 300 volts in extremely short pulses, too fast for your multimeter to respond to it.
Your amplifier is working. Your breaker points are working, although we don't know about the gap, etc. But they are at least triggering the amplifier.
So.o.o.o.o, if your spark is weak, either you are losing it in the distributor or the coil is defective.
Do this: remove the coil and unscrew the wire from the distributor cap, then remount the coil and reconnect the blue wire. Rig up a spark gap off the end of the threaded terminal that came out of the distributor. Make that gap about 3/8". Now crank the motor and see if you get a spark across that gap. If you do, you are losing it in the distributor.
