1996 Seadoo SPX won't start

[trixie]

I have replaced the Stator and Trim Module. After being serviced the machine ran great for a few rides. I push the button to adjust the trim and the engine cut out and will not start. Could this be a short somewhere or something else? I'm tired of dumping money into this.

 

[kustomkarl]

Welcome to the seadoo forum trixie. Did a seadoo repair shop do the service? If so bring it back to see if they did something wrong.

Karl

 

[trixie]

I have had it to the shop twice for the same problem. I've spent over $1000 and it's still not fixed. I just dropped it off again this morning. I think they are just quessing and replacing parts at my expense.

 

[kustomkarl]

I would recommend that you not keep paying the repair shop for the same repair they repaired because it still isn't right. The parts are expensive, but it should have lasted longer than this. That's why you paid the big repair bucks for "expert authorized seadoo service"...not the wanna be repair shop down the street, if you know what I mean.
Keep me posted on the outcome.
Karl

 

[trixie]

Any ideas what could be causing the problem?

 

[kustomkarl]

Here is some testing information. It might be more information than you need...

Always confirm that the fuse is in good condition. The7.5 amp fuse is in the MPEM module. Check the motor with a multimeter. Install the test probes on both the Blue/Orange and the Green/ Orange wires. Resistance should be close to 1.5 ohm.
If the motor seems to jam and it hasn’t reached the end of its stroke, the following test could be performed.
Remove the motor from the VTS. Manually rotate worm gear to verify the VTS for free operation. Connect it directly through a 15 amp fuse to a 12 volt battery. Connect wires one way, and then switch the polarity of the wires to see it work in the other direction. If it does run in both directions it could be the VTS module. If the VTS motor does not stop at the end of its stroke then the motor could be defective.

The VTS module receives it current from a 7.5 amp fuse in the MPEM.
Disconnect the Brown/Black wire and the Brown/White wire from the VTS module. Connect the probes of the multimeter to the 2 wires of the module. Push the start stop button to activate the MPEM timer,(gives power for 33 sec. without running engine). Push the VTS switch down position until motor stops. The ohm resistance reading should be 24 ohms+-1%. Push the switch button up until the motor stops and the resistance should be 167ohms+-1%. This test isn’t perfect but it should be close.
It's possible it blew the fuse in the mpem and is causing the non start problem.
Keep us posted.

Karl

 

[PaulS]

There could be a short in the VTS have seen this before , where is blows the fuse,
Had to disconect the vts to get the ski running ,, I set the VTS to nominal and just kept it that way as it was big bucks to change for an old ski,

 

[trixie]

The shop tells me it is blowing the main fuse. They are checking all the wires one by one right now.

 

[JPX]

PaulS is on to something - if you disconnect the VTS and resume your testing, you may find the problem will go away (and also stop blowing fuses).