What to do if your Mercury outboard does not start?
If the engine does not start after disconnecting these wires, check the purple wire, which is the ignition switch wire, for damage and that it is secured properly. Try disconnecting the black/yellow wire from the engine to check the kill circuit first. If the engine still does not start, change the white/green and the green/white stator wire.
Why does my car not start when I Disconnect the wire?
If the engine starts when these wires are disconnected, then the shorting system is faulty. If the engine does not start after disconnecting these wires, check the purple wire, which is the ignition switch wire, for damage and that it is secured properly.
What to do if your outboard ignition does not start?
If the engine does not start after disconnecting these wires, check the purple wire, which is the ignition switch wire, for damage and that it is secured properly. Try disconnecting the black/yellow wire from the engine to check the kill circuit first.
What to do if there is no start from the engine?
If there is no start from the engine, there may be no spark present. Check that the spark plug for the engine is free of decay and is clean. If there is any water on the spark plug, check for leaks. If the spark plug is working, disconnect the black/yellow wire and/or the black/white wire.
How to troubleshoot ignition problems on a Mercury outboard?
Many ignition problems stem from electrical issues, but there are a few general troubleshooting tasks you should perform. Check that there is plenty of gas in the gas tank and that all fluid levels are at the right level. Make sure that all wires are connected properly. If there is no start from the engine, there may be no spark present.
When is a Mercury Mariner switch box bad?
You should have a reading of at least 150V or more at both places on all cylinders. If the reading is low on one bank and the stator voltage is good, the switch box is likely bad. (Note: A final test to verify which component is bad is to swap the stator leads from one switch box to the other. If the problem moves, the stator is bad.
When to disconnect a Mercury Mariner ignition coil?
For instance, if you have no fire on one cylinder and the DVA trigger reading for that cylinder is low – disconnect the trigger wire and recheck the DVA out put to ground from the trigger wire. If the reading stays low – the trigger is bad. Check the DVA output on the green wires from the switch box while connected to the ignition coils.
What to do if your outboard engine does not start?
If the engine still does not start, change the white/green and the green/white stator wire. This will change the engine starting cylinder. If the problem persists in the new cylinder, the stator is bad and needs to be changed.