I have a 2009 Artic Cat 550 EFI. It was running fine, then all of a sudden it won't start. There is free flowing gas. It cranks, but just wont start. The spark plug looks good. Any ideas?

 

When you turn the key can you hear the fuel pump kick on and then kick off?

Could be your tip sensor. This can be reset easily

Is your kill switch set to on?

Check all your fuses.

HOw is the battery? These EFI cat's need a very strong battery. If battery is on the way out, it will cause all kinds of issues.

 

Yes, I can hear the fuel pump come on. I have check to make sure filters aren't plugged. I have good gas flow. Spark at the plug. It tries to start, but won't turn over..

 

by turn over, do you mean the starter can not turn the engine? OR do you mean the starter cranks the engine, but it wont start?

 

How do you know you have good gas flow?

After you try to start it is the plug wet?


If I were you, I'd check that kill switch. I am pretty sure if it is off, the engine will crank and crank, but it won't start

 

Another thing you should check is the rubber boot between the throttle body and air intake tube.

Its a known problem to have them tear. If they do, the engine gets too much air and it is very hard to start. When mine tore, I was able to start it by holding down the throttle and cranking it for awhile.

Check this boot to see if it is torn.

 

I get a stream of gas when disconnected at the back of the throttle body... However when the plug is pulled, its not wet..

 

What about everything else I mentioned??

 

What was the problem in the end? Mine is doing the exact same thing.