Suzuki Kill Switch Issue

[Hpracer]

After previously running the motor during cleanup after a non-eventful run we put the boat away for a month or so during the cold Florida weather and when we launched, the motor would turn over but not start at the boat ramp. It acted just like the lanyard was not plugged in. The kill switch was found to be bad in that no matter whether the lanyard was in or out we couldn't get continuity across the switch. Looking at the manual I found that the switch actually goes open when the lanyard is plugged in. I bought a generic kill switch from a local marine store and installed it, but it still will not start as there is no spark to the plugs (there is gas). This generic switch from Seachoice can be wired either way, normally open or normally closed, so I tried it both ways. One way nothing happens with the starter switch. The other way (normally open) the motor turns over but won't start, just like before.

Is there something special about a genuine Suzuki part? Is there anything else that could cause the motor to turn over but not start? Has anyone had a similar problem?

 

[boscoe99]

Is the model of the motor not known?

 

[Hpracer]

Sorry, should have listed the model of the motor. It is a Suzuki DF 140 on a 19 ft Sea Fox Center Console.

 

[Mc Tool]

The fact that this is the 2nd kill switch , and that the starter dont work in the "off" position and does in the "run" position strongly suggests to me that the switch aint the problem . It appears to be doing what it should .
Check the fuses and then give the thing a real good eyeballing , specially round plugs and terminals just looking for something out of place .

 

[Hpracer]

The fact that this is the 2nd kill switch , and that the starter dont work in the "off" position and does in the "run" position strongly suggests to me that the switch aint the problem . It appears to be doing what it should .
Check the fuses and then give the thing a real good eyeballing , specially round plugs and terminals just looking for something out of place .

Thanks for the reply. I have ordered a complete Suzuki ignition panel that has the kill switch and the ignition switch. It is hard to imagine that something would change with the boat in storage but the fuses will be the next to check if this doesn't work. ( I actually don't know where they are or would have checked them already, but I will find them if needed).

 

[boscoe99]

In the back of your owner's manual is a wiring diagram. Kill switch is a simple open or closed device. Normally open for the motor to run. Closed to stop the motor. Or to prevent it from running.

Ignition stop circuit is tied into the kill switch circuit. One wire from the two devices combined to the ECU/ECM.

 

[99yam40]

even if the switches are working properly,
the wiring back to the controller could be grounded in the harness somewhere

 

[Hpracer]

OK, new switch panel and Suzuki kill switch installed and fuses checked and it still won't start. If I follow the wiring diagram and your suggestions, are you saying that the Blue/red wire should not show continuity with ground? And if it does we need to wring out the wires until we find where it is grounded?

 

[Hpracer]

I thought that I ought to get back to this thread and let anyone know that might have been following this what actually happened. The old kill switch did in fact act like something was wrong because neither condition showed continuity, whether the lanyard was in or not, but not when it was installed. I don't understand this but perhaps when it is powered up it acts differently because I was always checking it when it was removed.

But, the real problem was water in the gas. A lot of water. Enough that the fuel pump and injectors corroded. The high pressure pump froze up and didn't work and when it was replaced the motor STILL didn't start because the injectors didn't work. Replacing all of the injectors finally got it going. Apparently with the high humidity of Florida, the big temperature swings, and only a small amount of gas in the tank, allowed condensation to accumulate a lot of water and with the boat not being used for over six months it gave time for the water to cause corrosion.