Has anyone heard of this problem? If the engine has been running for a minute or two, if I shut it down it won't restart for about five to ten minutes. If the engine has been running for a while, it won't restart for about fifteen minutes. In the meantime, there's no spark. When it does start, it fires right up with a two second turnover on the starter. Its like there's some sort of interlock that has to cool down before it will restart. The engine runs very cool so its nowhere near overheating. The temp guage is always low to mid-line. The sled has the DPM and I hope its not something in the MPEM box.
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Ignition Problem - 2002 Ski-Doo Legend 700
- Thread starter marty700
- Start date
The engine never died or performed poorly in any way while running. It was just an issue getting it re-started. Once running, the engine ran great.
After that statement I wouldn't rule out the stator but it sounds more like it is in the brain or coil. Stators will do strange things but usually once warm you loose stuff, and usually they don't cool down that fast to allow you to restart. Do you have another 700 that you could swap brains (MPEM)with to see if you can narrow your search?? Check those plug wires over also to make sure they aren't cracked or the caps loose.
Should be good enough to fire it. I would start the one that is having problems, with the other MPEM in hand. Shut the one with problems down and try and restart right away. If it won't start switch it out and see what happens. If it starts hurry up and put the one back on that didn't work and see what happens then. If it won't start you know your ploblems. If this isn't it take your air box off and look at that coil real good. Even do a swap on that if you have to. You also said these are legends. I assume they are electric start?? For the heck of it look at fuses and relays also. Maybe one of the relays are getting warm and opening up on ya too....
Thanks for the advice. I'll give the MPEM swap a try. I have a shop manual that says the calibration points are different for the DPM sled (the 700GS model) vs. the non-DPM model (the 700 Sport model). So the other MPEM may not work at all. I guess I'll probably have to take it in. But I'll give it a try.
Tried swapping out the MPEM's. Couldn't do it. The plugs were different and there is no place to plug in the DPM. I took it in to the Ski-Doo dealer. He doesn't think its the MPEM. He thinks the problem is likely in the starter relays. Anyway, I'll post back once we get it figured out.
The dealer mechanic couldn't get the problem to repeat itself in the shop. However, he strongly believes that the problem was a sticking relay. There are two relays that impact the starting sequence. He doesn't think it was the "starter" relay because the solenoid came up and released properly when the start button was depressed and released. He thinks it was the other relay. Its a cheap part (relatively, compared to the MPEM), so I told him to replace it. We'll see if the problem resurfaces.
I was just going through my old posts and realized I never "circled back" on this one. Turns out it was definitely the stator. After a few more weeks of trying everything but the stator, the thing finally failed hard. I had the dealer replaced the stator (that hurt the pocketbook!) and the problem was solved. I was hoping it was something else - but I guess I was just in denial.
Thanks to the folks who responded.
Thanks to the folks who responded.