I have an '03 9.9 four stroke Johnson (made by Suzuki). It runs, but only at half rpm and seems to be missing on the bottom cylinder. I get a very good spark across a 7/16" gap on both spark plug wires. If I bypass the bottom spark plug to my gap-jump tool, the motor runs fairly smooth when running on only the top cylinder. If I bypass the top spark plug to my gap jump tool, the motor runs, but misses and usually dies when running on only the bottom cylinder. I switched the plugs with each other to see if one was bad, but nothing changed in the above scenario.
Is it the cdi box or coil? Can I test these with an ohm meter? Does anyone know the procedure and test parameters?
Thanks.
Is it the cdi box or coil? Can I test these with an ohm meter? Does anyone know the procedure and test parameters?
Thanks.