Home › Forum › Ask A Member › 1982 Johnson 7.5 Spark 1 Cylinder › Re: 1982 Johnson 7.5 Spark 1 Cylinder
OK, so your original problem is no spark on cylinder #1/top cylinder, correct? You are saying that you removed the two powerpack orange leads out of the rubber connector, then you put the #2 pack orange powerpack lead into the #1 coil, correct? When you did that, the #1 coil fired, correct? You then tried the #1 pack output lead on both coils, and neither one fired, correct?
If all my statements/assumptions are correct, you most likely have a bad powerpack. Again, be sure to check all grounds, and eliminate the stop circuit from the connector. It is unlikely that the sensor is at fault, but be sure to at least check the sensor coil continuity. The black/white leads in the four wire connector going to the powerpack are the sensor leads. Separate the connector and be sure you are working on the sensor end of the connector (wires leading back under flywheel). The resistance between the sensor leads should be approximately 40 ohms. Now recalibrate the ohm meter to the high scale and check the sensor for shorts to ground. Attach one meter lead to the mag plate, then touch the other lead to either sensor lead. The meter should read infinity, no connection, no shorts to ground.
OK, misread original post…Just edited this post to reflect no spark on #1/top cylinder.