[Tiger744]

After running for 45 to 50 minutes, my engine quits like it was out of gas but after about 15 minutes, it will start and run fine. I had the carb reworked at the local polaris dealer a coupla months ago. Any ideas?
Thanks

 

[blueline15]

is your cooling system full? that is my first guess. sounds like something is getting too hot and the machine is shutting itself down to protect itself

 

[Bruce!]

And welcome to the board!

 

[4getful2]

when it quits do you check to see if it's getting a spark or gas??

 

[Tiger744]

Its getting spark, I'm pretty sure. Gas Not so sure. Kinda like somethings I've seen that the fuel was vaporizing somewhere then when things cooled off a bit it was fine
i had a new fan installed that has a switch I can turn off and on as needed.Maybe i need to leave it on all the time.

 

[Tiger744]

And thanks for the welcome to the forum

 

[atvjunkie821]

Run it till it quits, take off air cleaner and spray a little starting fluid into the carb while starting. This will tell you if it is a fuel problem. If it starts:

Make sure your tank is clean, there is a tube screen in the bottom that connects to the petcock. You may want to take the petcock off (2 bolts) and check that out. There is also an inline filter from the fuel pump to the carb, check that as well. Check all lines running to the fuel pump and back down to the carb. I hope this helps.

 

[Tiger744]

while checking all that

found that the cam was worn (a notorious problem with this engine) so i was getting the compression i need. waiting for a new cam now.

 

[atvjunkie821]

yeah I know, but I was hoping that it wouldn't be your problem. Are you going with an 500HO cam?

 

[Tiger744]

if i can find one at a reasonble

price

 

[atvjunkie821]

Cheap cycle Parts has one for $233. That's not really cheap to me though, but if you have to, you have to.

http://partsfinder.onlinemicrofiche...Polaris_OEM/PolarisATV.asp?Type=13&A=318&B=30