Re: 1973 johnson 135 only #2 firing
The 1973-77 V4 ignition uses two sensor coils, one powerpack, and four ignition coils. The sensor coils are up under the flywheel. One sensor coil fires cylinders 1 & 3, the second fires 2 & 4. <br /><br />First, disconnect the black wire with yellow stripe going to terminal 1 on the powerpack. That is your "kill" wire, and the motor will no longer stop with the key - so better have the plugs out or be ready to stop it with the choke. What we're doing here is ruling out a problem with your remote control box. Still the same, just spark on #2? OK, it's not the control box.<br /><br />Try swapping the wire from the powerpack to ignition coil #2 to another ignition coil. The other coil is firing now? OK, sounds like it's either your powerpack, or the timer base. <br /><br />Try swapping the sensor leads for 2 & 4 with those for 1 &3. Does the spark move with them (that is, do you now get spark from #1 or #3)?<br />Could be the timer base, though you should be getting spark from 2 AND 4 if it's just the timer base.<br /><br />Check it out & let us know what you find.
