97 xp spark issues

[andrewb5336]

I have been battling issues with intermittnet spark for the whole summer. The engine will start and run for 2-3 seconds then shut off like some one turns the key off. Then I can count to 10 and start the engine back up for 2-3 seconds then it will shut off. I got lucky one day and it stayed running, so I took it out on the lake and rode it for 3 hrs no problems started and shutoff fine. Then I went to use it on the weekend and the spark issues have come back. I have repalced just about everything on this seadoo and about to give up. I have replaced these parts over the last year. The stator, the igntion coil the pick-up coil, the MPEM. I have also cheaned the connections at these locatons 4 times. I replaced the pins in the connector at the engine. If there is any input out there to help I would appreciate it. I really don't want to buy another MPEM!!

 

[seadoosnipe]

Dess post........

Replace the DESS post. The post is magnetic and over time, will lose it's ability to hold onto and communicate with the lanyard cap.

I think there's about a 99.999% chance thats your problem. My boat (787) did the same thing last year. Worked on it and worked on it. Then, I figured there was nothing else but the post. It hasn't cut off since....:cheers:

 

[andrewb5336]

I will try replacing the DESS switch and I will let you know what happens.

 

[JESSECONSOPOLUS]

errrrr......

man i am almost the same issue. mine (97 gsx) will idle just fine but when u throttle hard it will die unless you hold the key in or hold the start/stop button down. when you hold the key in place it runs great. the second that key moves or vibrates a little the boat will die. you can unplug it and plug it back in and 2 beeps and away u go for about a second. i am going to replace my post and see if that will fix it as well.

 

[andrewb5336]

Well I replaced the post and the same thing is still happening. What do you think probly the MPEM?

 

[kustomkarl]

It might be the lanyard cap is bad...it has to mate to the post. The lanyard cap has a ROM,(Read Only Memory) chip in it. If you replace it you will have to get it reprogramed at the seadoo dealer.

Karl

 

[andrewb5336]

I have two lanyards and both of them don't work.

 

[andrewb5336]

I changed the MPEM with a friends that has the same PWC. My pwc ran fine then. I installed my mpem (bad) into his pwc and it had the same problem that mine was having no spark or spark for 3 sec then shutdown. I'm going to assum that my mpem is bad. His mpem verified that all the wiring is good and everything else.