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Monday, 24 August 2015

Cars & Transportation: Boats & Boating: “Question: I have a 1999 Force 40 horsepower outboard that has no spark - can anyone tell me where to start troubleshooting this issue?” plus 5 more

Cars & Transportation: Boats & Boating: “Question: I have a 1999 Force 40 horsepower outboard that has no spark - can anyone tell me where to start troubleshooting this issue?” plus 5 more


Question: I have a 1999 Force 40 horsepower outboard that has no spark - can anyone tell me where to start troubleshooting this issue?

Posted: 24 Aug 2015 04:39 AM PDT

Mercury/Force CDM igniton diagnosis:

1. Disconnect the Black/Yellow stop wires from the harness and retest. If the engine's ignition sparks, the stop circuit has a fault.
Check the key switch, harness and shift switch.
2. Disconnect the Yellow wires from the stator to the rectifier and retest. If the engine now has spark, replace the rectifier.
3. Check the cranking RPM. A cranking speed of less than 250-RPM will not allow the system to spark properly. This can be caused by a weak battery, dragging starter, bad battery cables or a mechanical problem inside the engine.
4. Inspect the spark plug wires, boots and spark plugs. Check for chafing on the wiring and harnesses.
5. Inspect and clean all engine and ignition ground connections.
6. Pull on each wire from each CDM harness plug. Make sure all wires are making proper contact inside plugs.
7. Disconnect one CDM module at a time and using a set of piercing probes and jumper wires - short the stator wire in the CDM connector to engine ground. Retest. If the other module starts sparking, the CDM you unplugged is bad.

Question: Rispondete per favore!! :)?

Posted: 24 Aug 2015 03:39 AM PDT

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