Mark, is that an OIS (optical ignition system)?
90 hp johnson
I have a 99 90 hp johnson. Ran great until two weeks ago. It has developed a miss. I changed plugs and fuel filter. It will run when first in water and then misses bad after a few minutes of running. It completly quit last time. I trolled back to dock.(1 hour). Ran fine when loading it up. I know it s time to see the mechanic. Just wondering what the damage may be? Thanks!
Mark Beggs
Church Hill Tn
Mark Beggs
Church Hill Tn
1 - 2 of 5 Posts
It sounds like the ignition module is going out on it, is why I asked.
I can change one in about 20 minutes, if that's the problem.
Your looking at cost of part and about 1 hr labor.
I can change one in about 20 minutes, if that's the problem.
Your looking at cost of part and about 1 hr labor.
1 - 2 of 5 Posts
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