2008 Suzuki King Quad - Shutdown After 10 Mins

[fallenangel]

Good evening,

I'm hoping someone here can help me.... I've had my quad to 5 different shops and no one seems to be able to fix it. The problem I'm having with my 750 King Quad is that it will run for about 10 minutes and then shut off. If you let it sit for a while, it will start back up, but will then do the same thing. I am at a loss. I had one place tell me I needed a new CDI for about 600 dollars and yet another tell me I needed the engine redone...... my quad only has 600 miles on it. Anyone else heard of this problem, or know what might be causing it?

[oxidized_black]

once it is warmed up, an electrical component(s) is failing probably. a coil would be something to look at first, then see if you can get your cdi box tested ...

[fallenangel]

thanks for the reply, the coil is fine, and how do I get the CDI tested? I really dont want to drop 600 into the quad if it isnt the poblem

[oxidized_black]

the easiest way is switching it out with a bike that's the same, otherwise the dealer can test it. try a couple different dealers ... i know there is a way to test them with a meter, but i'm not sure of the specs ...

[oxidized_black]

is the bike an '08, '09 ??

[wylde1]

My Trailblazer used to do something like that. I would start it up and it would run fine, but as soon as it got warmed up it would bog down and stall. I would not be able to get it started again until it cooled off. I checked all the elctrical and everything was fine. Just off the wall while I had the plug out I did a compression test. Turned out to be way low. What was happening was as the motor warmed up and expanded it would lose compression. As it cooled and contracted it got just enough to start and run. If you have a tester it is easy and then you can rule that out.

[fallenangel]

Its a 2008....... I"ll see if I can have the CDI tested and Ill have the compression checked..... will let you know what I find out.

[fallenangel]

update...... now Im really confused LOL..... i took my kq to a shop that said they could test the cdi for me..... they tested it, and said nothing was wrong and there were no codes when they put the kq on the computer.... they put another cdi in it to test it, and then it ran fine..... they put the old cdi back in to see if it would still act up, and now it runs fine.... ran the kq for over half an hour and it never shut down..... now i have that shop confused too LOL.

[guitarzan]

Good evening,

I'm hoping someone here can help me.... I've had my quad to 5 different shops and no one seems to be able to fix it. The problem I'm having with my 750 King Quad is that it will run for about 10 minutes and then shut off. If you let it sit for a while, it will start back up, but will then do the same thing. I am at a loss. I had one place tell me I needed a new CDI for about 600 dollars and yet another tell me I needed the engine redone...... my quad only has 600 miles on it. Anyone else heard of this problem, or know what might be causing it?

It could be the CDI, but, is the bike getting too hot? Check coolant & water pump. BUT my money is on a bad coil. When it shuts down, touch the coil and see if its over heated. When a bad coil gets too hot, its because the wiring coil inside is shorting across from one winding to another. (Just a note-coils all work the same-almost any 12 volt coil will work if wired right-even a cheap China coil that's set up the same with number of connections.) And, another problem area is the voltage Rectifier. I fixed a 110 atv this week that people had been fighting for a year or so. It would start, run good awhile, then run bad, shut off. The problem, Rectifier getting hot as it was shorting out internally.

Spark wise, these things all work the same. Trigger coil (my name for it) sends a small voltage signal to the CDI, every time that the flywheel turns to the position where a magnet in it passes under the trigger coil.

Then, the CDI sends a larger voltage to the coil, which then sends a very large voltage to the spark plug, which then fires.

With and OHMS meter, you can check out the "TRIGGER" coil.

All of todays engines use this same principal, even cars on the road. There its called a "Crank Position Sensor". This system replaces the old "Contact Points", that we used to work with to clean and reset. They made contact once for every cylinder a motor had.

Hope all this helps.

Guitarzan