Seadoo stalled, won't start?

[impulsive]

Hi guys,

was riding my seadoo gti le rfi today, out for about 20 minutes, 12v Low flashed up turned around to head home, was getting 2 long beeps then suddenly nothing. The jet ski stopped running and i was stranded. Luckily got towed to the ramp by a random.

Once i got home i started to diagnose. the batt was sitting at 11.8v no fuses had blown from what i could see.

I should also mention that when i tried to start the ski it was just clicking. The battery is on charge now and will post up if it starts etc

im assuming ists a stater solenoid or rectifier issue?

 

[impulsive]

just plugged the battery in and the jet ski started.. system is not charging. im going to check wiring and look at replacing rectifier

 

[impulsive]

also forgot to mention..

before the ski stalled the speedometer was playing up reading 0, then release the throttle and it would jump up again.. any ideas anyone? not keen on forking out for a new rectifier if its not the prb

 

[El Toro 33809]

I've read that proper voltage is important for the non-carburated models, that's probably what the issue is. Your idea of the rectifier is most likely correct. I think someone with better knowledge will jump in here on how to test it.

 

[impulsive]

thanks, ive read around and gather there is no real way of testing the rectifier other then checking volts. But that doesnt narrow it down to only the regulator. The wiring and a whole host of fuses and fuse holsters are in question. Im assuming its a process of elimination, go through and check all again..

 

[LouDoo]

I would start with the battery, check the connections for corrosion, clean and apply dielectric grease. Check the voltage across the battery it should be around 12.5 to 13v., also check the battery under load, the voltage should be no less than 11v. when the starter is cranking. The charging voltage across the battery, when the ski is running should be about 14.5v.

If the battery voltage is less than 10.5v. the mpem will shut off.

Lou

 

[adamsbj123]

The rectifiers are a common problem with RFI and DI skis. Obviously with a low voltage issue you should first start with the battery. If the battery checks out OK then most likely you need to replace the rectifier. There is a heavy duty version available from OSDparts.com It is better than the OEM.

 

[Minnetonka4me]

Yup what adams said...VERY common issue on those skis. And Lou has what you need to test above. Get back to us with your findings.

 

[impulsive]

If the battery voltage is less than 10.5v. the mpem will shut off.

Lou

wil this cause the ski to stop completely and not start untill charging has commenced

 

[LouDoo]

Yes it would.

Lou

 

[Dennis]

Unplug the rectifier connectors. Use a volt/ ohm meter to test the harness side wires.

Red wire should read battery voltage. (if not then check fuse)
Black wire should have continuity to engine ground.
The three yellow wires should have continuity between themselves but none to engine ground.

If it passes these tests then odds are that the stator and wiring are good so I would replace the rectifier. :cheers:

 

[impulsive]

the battery has been tested and came back good, but just needs a charge.. its on charge now.. im going to take another look at the wiring, do another volt test as described above and ill come back with the answer

 

[impulsive]

Ok good news i think..

The wiring from the rectifier to the 2 fuses and the rectifier ground wire had been replaced already.. im assuming the previous owner had a charging issue and the plugs were corroded so they have been chopped out and replaced with connectors. I have replaced the connectors and both fuses (15amp) cleaned the battery terminals and leads. Removed cleaned and refit the starter solenoid leads.

The battery was fully charged and reinstalled. the ski started no probs, straight away. Then proceeded to display a continuos 13.92v. This is better then the 11.8 it previously showed.

im assuming this is good news, although still a relatively low level of charge.

 

[LouDoo]

The charging voltage should be between 14-14.5v at about 4000rpm, so I would say you're withing specs. or at least in the ball park.

I think you got it fixed.

Lou

 

[impulsive]

i really hope so.. ill do another test on hose and give it a bit of revs as the book says.

Edit:

Just had the ski on the hose, full noise, still reading at 13.9 volts. this is at all points, the battery, fuses, connections.

 

[Minnetonka4me]

sounds right to me...time for a rip!

 

[bigJake]

Unplug the rectifier connectors. Use a volt/ ohm meter to test the harness side wires.

Red wire should read battery voltage. (if not then check fuse)
Black wire should have continuity to engine ground.
The three yellow wires should have continuity between themselves but none to engine ground.

If it passes these tests then odds are that the stator and wiring are good so I would replace the rectifier. :cheers:

Dennis, can I assume this test applies to all models?

 

[Dennis]

Yea Jake, I'm pretty sure it does except the smaller engines only have 2 yellow wires (different style stator).

 

[impulsive]

im going to take it out again today, fingers crossed the problem is solved.. the battery is on charge again after playing around with it yesterday i want to give it every possible chance. I'm doubtful of any progress as i think this ski is cursed..