davesfriend Posted December 5, 2008 Share Posted December 5, 2008 I have a 2000 polaris 335 sportsman. I have relpace the air filter oil, spark plug, fuel filter and cleaned the carb. The problem is, you can creep up on full throttle, but if you give it any quick juice it boggs.. bad. You can feather the throttle and get her going. I have tried the choke and that does not seem to fix it. Any Ideas? Thanks.. Link to comment Share on other sites More sharing options...
McGurk Posted December 5, 2008 Share Posted December 5, 2008 Did you purchase it with this problem or has it come on recently? Could be something as simple as carb adjustments if indeed the carb has been thouroughly cleaned. It sounds like it's not getting enough fuel, so I'd look at the fuel line from the tank, gunk in the bottom of the tank blocking the line, or a plugged orifice in the carb. Did you do a full soak overnight on the carb or a spray job? Was there a worn or bent needle for the high speed jet? Link to comment Share on other sites More sharing options...
nitro640 Posted December 5, 2008 Share Posted December 5, 2008 this may sound stupid but check the battery. my 03 kawasaki street bike wouldn't run past idle when the battery went bad. Link to comment Share on other sites More sharing options...
heat checker Posted December 5, 2008 Share Posted December 5, 2008 Take a good hard look at lobes on camshaft. We spent alot of time, money rebuilding carb, fuel pump ect, only to look at cam for a second time and realize that was the problem. Specifically the inner lobes. Link to comment Share on other sites More sharing options...
Uncle Bill Posted December 5, 2008 Share Posted December 5, 2008 Mabey a Simple fix.Check the fuel line/hose for cracks. Link to comment Share on other sites More sharing options...
davesfriend Posted December 5, 2008 Author Share Posted December 5, 2008 I hope it is a fuel line or something, I do not want to tear the engine down. Link to comment Share on other sites More sharing options...
Roofer Posted December 5, 2008 Share Posted December 5, 2008 I say give up, but that's just me. I'd rather have a trusty machine rather than working on one all the time. If treated well a new machine can last a long time, and the payment plans are not too bad. I just bought a new Polaris for $2 a day minimum payment. I always pay double or more, but they are very affordable. Just depends on how important an ATV is, to you. Link to comment Share on other sites More sharing options...
keith schultz Posted December 5, 2008 Share Posted December 5, 2008 Did you ever think of the float in the carb, it very well could be getting stuck when the fuel is rushing in the bowl, and causeing the float to get cocked in the bowl.. Just my 2 cents...?????? Link to comment Share on other sites More sharing options...
krats Posted December 5, 2008 Share Posted December 5, 2008 I agree with heat checker. But does it back fire when you give it full throttle?I just bought a 1995 Polaris 425 Magnum, the guy told me that his mechanic told him it was the carb because the wheeler had been sitting around in the garage for 2 years. I am not a mechanic and I am apparently pretty gullable.Any how, turned out to be the cam shaft was toast. The exhaust lobe was wore out the worst. I have been told now that apparently Polaris is known for having this problem with some models. Well $500 or so later and it is running like a top.Good luck. Link to comment Share on other sites More sharing options...
aczr2k Posted December 5, 2008 Share Posted December 5, 2008 Yep those 425's and I think the first 500's were known for bad cams. Link to comment Share on other sites More sharing options...
Dave S Posted December 5, 2008 Share Posted December 5, 2008 3 things come to mind when I hear bad cams:1) they made from bad material (Honda Rincons had a run of bad cams)2) the machine didn't warm up long enough before it was ridden3) it sat and idled too long2 and 3 are due to not enough oil getting to the top end either from not being warm enough to flow (extreme cold) or not enough rpm (after warming up). Link to comment Share on other sites More sharing options...
Dozer Posted December 6, 2008 Share Posted December 6, 2008 I say give up, but that's just me. I'd rather have a trusty machine rather than working on one all the time. If treated well a new machine can last a long time, and the payment plans are not too bad. I just bought a new Polaris for $2 a day minimum payment. I always pay double or more, but they are very affordable. Just depends on how important an ATV is, to you. I would have to disagree to a point. At $2 a day thats over $700 a year! I dought you will spend $700 a year to keep this one running just fine. Just depends how much you dislike working on stuff though. I personally enjoy this type of stuff so I doesnt bother me to work on things. Link to comment Share on other sites More sharing options...
jltimm Posted December 6, 2008 Share Posted December 6, 2008 My neighbor just had his popo fixed with a bad cam.He also said that polaris is known for cams going bad do to not getting oil during idle time as pointed out earlier in this post. Link to comment Share on other sites More sharing options...
Roofer Posted December 6, 2008 Share Posted December 6, 2008 I figure my time as money also. Link to comment Share on other sites More sharing options...
Dave S Posted December 6, 2008 Share Posted December 6, 2008 excess idle time will damage most any engine. Link to comment Share on other sites More sharing options...
davesfriend Posted December 8, 2008 Author Share Posted December 8, 2008 Thank you all very much. I was doing some plowing this week end and could not get the problem again. Intermitent? I wounder now. One time when I got frusterated with the carb I drained the float, and the problem went away for a while, maybe it is the float? Link to comment Share on other sites More sharing options...
Macgyver55 Posted December 8, 2008 Share Posted December 8, 2008 One time when I got frusterated with the carb I drained the float, and the problem went away for a while, maybe it is the float? Do you mean the float bowl? If so, it could be that you had a small amount of water in the bottom of the bowl and on hard accelleration it was sucked up to the main jet and causing the hesitation. Link to comment Share on other sites More sharing options...
McGurk Posted December 8, 2008 Share Posted December 8, 2008 Drive it Drive it Drive it. Old/Bad gas and limited use will sometimes cause tweaky little problems like this, and I think the more you use something like this the better it will run for you. Best case scenario; there is no longer a problem! Link to comment Share on other sites More sharing options...
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