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Old 15 April 2014, 07:43   #1
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Country: Other
Town: Matosinhos - Portugal
Boat name: Game Club
Make: Valiant PT-520
Length: 5m +
Engine: Suzuki DF90
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Suzuki DF 90 electrical problem

Last weekend, I had some unexpected electrical problems with my DF 90 Suzuki (2006).
The engine ran smoothly for a few hours but, when I stopped it and a few minutes later tried to restart it, nothing happened. The battery was ok since the tilt could move the engine up and down, but, there was no reaction when I turned the key: no lights in the rpm meter, no buzzer sound, nothing at all.
After a few movements of the control lever (forward, backward, clutch), removal and insertion of the kill switch and a few retries on turning the key, the lights in the rpm meter finally lit and the usual buzzer sounded. The engine started normally and ran smoothly. The next time I stopped the engine, it restarted normally.
A similar situation happened 4 or 5 times during that day and the following 2 days and there was even one situation where the engine stopped suddenly while cruising at 4000 rpm.
Any hints about what may be causing this?

Thanks

Antonio Carrapatoso
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Old 15 April 2014, 11:55   #2
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Country: USA
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Boat name: Water Dog
Make: Polaris
Length: 4m +
Engine: Yamaha 60hp
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1) The in-gear start protection is staying on even though its in neutral. (mostly likely)
2) Bad ignition switch.
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Old 26 April 2014, 15:15   #3
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Country: UK - England
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Boat name: Freespirit
Make: Redbay
Length: 6m +
Engine: Suzuki DF 140
Join Date: Apr 2013
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I agree

Had a similar problem myself with another boat.

The gear selector may think the engine is in gear and hence cuts the electrics, mine was a tired switch that kept sticking, shouldn't be too bad to replace.

Changed my switch and never did it again

And/or

Check all the connections to the ignition switch, look for the green colouring on the wiring,
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Old 26 April 2014, 17:30   #4
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Had a similar experience myself last weekend, try the battery contacts, strop , clean & refit with Vaseline on to prevent further problems.
Worked a treat, just a bad contact. Hope yours is as simple
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