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Omc 3.0 motor fires but will not start

1989 omc 3.0 boat motor fires but will not start. i have a new battery, it is getting gas. Any suggestions?

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Yes, the ignition switch or ignition wires on the Run side of the switch may be bad. Most people don't know that the Start side of the switch can power the spark plugs. But when you stop cranking and let the key go to Run you can lose the spark to the plugs

There is also a safety feature in the OMC system. The micro switches on the linkage have to be adjusted or timed. This is so the throttle is not set too high to engage the outdrive. So it does a lockout of the module or a lockout of the starter.

A second feature prevents starting if the outdrive is up too high. This prevents breaking Ujoints and dangerous planing conditions from an improperly trimmed outdrive. Lower the outdrive.

You will see the microswitches, see if the linkage can be moved to line up the contacts. They are simply contact switches and you may have to temporarily disconnect some linkage to test start.

Posted on Apr 25, 2010


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