I am stumped on this one. Runs when you first get on it most the time then it will start bogging down and spit/sputter and try to die if you give it throttle. Sometimes will die and won't crank back up for a while. I recently rebuilt the carb and didn't help at all. Any ideas?? Maybe CDI but how can I tell?? Thx

 

I'm new to this forum and hope I posted my question in the right place. Need help on this 2000 Arctic Cat 400 4x4.

 

Maybe a gas venting problem. Run it with the gas cap off and see if it works better.

 

I have tried running without the gas cap and have also made sure tank vent hose was not clogged. Replaced vent lines on carb. Also replaced fuel on/off valve on fuel tank. The motor will idle good but will try to die and cough back through the air box. Don't think it a carb issue b/c sometimes it runs fine.

 

You can move your post over to the Suzuki forum which has a larger following since your motor is the same Suzuki motor found in the 400 Eiger and King Quad.

 

Thx for letting me know that. I'm new to this stuff. I will try to do that.

 

I would check charging system could be over charging an heating up cdi...sounds like an bad voltage regulator. charging rate should be 13.3 to 14.1. see if charging is going up an beyond 16 to 18 volts. do this an get back here with us..thanks

 

Thx for the advice. I will defiantly try when I get home from hunting this weekend. I will let you know what I find out.

 

Ok I checked the charging today while idling and got 14.3. I let it idle for a long time.

 

need to rev up bout 5000rpm thats bout 3\4 throttle an see were the charging rate goes to....should regulate round 14.6..if voltage keep climbing an never regulates then voltage maybe spiking ignition system we got to know what it doing an 5000 rpms or 3/4 throttle in order to take the next step..