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Tusk Hog
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« on: February 26, 2010, 07:34:24 pm » |
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I've got a 2003 polaris trailboss 330. It will crank and run with the choke out. Once Idled up it runs good but will die when it idles down. I've changed the fuel filter, had the carb rebuilt, checked the fuel pump, and checked the spark. The one thing I have noticed is that inside the trottle assembly there is 2 pins that meet when the thumb trottle is released. When the pins meet the atv will sputter and die. I'm lost at this point. Anyone have any know with the eletronic trottle? Help will be greastly appreciated!
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slimpickins
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« Reply #1 on: February 26, 2010, 07:56:10 pm » |
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Yup, those 2 pins are a safety feature, so that when the throtte is released, some sort of magnetic field pulls the throttle back down, in case it is sticking inside the cable sleeve. Sounds to me like either the choke is not releasing when you flip the lever to turn the choke off. Mine all will not run once the engine is warm and the choke is still on. I'd start there. Hope that helps.
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Pro-Staff @ Wild Boar USA www.wildboarusa.com"Peace is that brief, glorious moment in history, when everybody stands around reloading!" unknown Bacon is a vegetable! |
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Tusk Hog
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« Reply #2 on: February 26, 2010, 08:07:45 pm » |
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Slimpickens, do you know if the safety feature is wired from the trottle to the control module. the choke seems to be working. I'm starting to wonder if somehow the control module could be causing my problem. But at this point I'm guessing.
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slimpickins
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« Reply #3 on: February 26, 2010, 08:23:07 pm » |
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No I sure don't. I'm still trying to think. Maybe just idle set too low. If the guy that rebuilt the carb didn't replace the needle and sleve it may be flooding down at low RPM's. It could be lots of things, I'm just throwing out more possibilities.
When the engine is warm and you stop it just idles down too low and dies?
Correct me if I'm wrong on that statement.
That could be that the idle screw is just set too low.
It's easy to get it set too high and the tranny is hard to get into gear without grinding badly.
Just a suggestion.
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Pro-Staff @ Wild Boar USA www.wildboarusa.com"Peace is that brief, glorious moment in history, when everybody stands around reloading!" unknown Bacon is a vegetable! |
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Tusk Hog
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« Reply #4 on: February 26, 2010, 09:16:13 pm » |
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I've adjusted the idle high and low, with the choke out and idled up it will continue to run. With it idled to a lower adjustment it will die. But at the lower setting it die when the pins make contact on the trottle. With the choke in it dies when you let off the trottle. Keep throwing ideas at me, something is got to work. thanks for the help!!!
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slimpickins
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« Reply #5 on: February 26, 2010, 09:24:55 pm » |
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My next move would be to pull the carb and check the needle, seat and sleeve.
These can cause the thing to do some weird stuff.
I bought an 01 that was in boxes and spent a week re assembing it.
I then spent 2 weeks with similar problems. As a last ditch effort, I tore into the carb again.
After getting into it I immediately saw the problem. It was so worn out the needle was about 1/2 the size of the wallered out sleeve. They are both brass and were just completely worn out and sloppy.
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Pro-Staff @ Wild Boar USA www.wildboarusa.com"Peace is that brief, glorious moment in history, when everybody stands around reloading!" unknown Bacon is a vegetable! |
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slimpickins
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« Reply #6 on: February 26, 2010, 09:26:53 pm » |
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Or and im not above this, rig it where the 2 points can't touch and call it good.  |
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Pro-Staff @ Wild Boar USA www.wildboarusa.com"Peace is that brief, glorious moment in history, when everybody stands around reloading!" unknown Bacon is a vegetable! |
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Tusk Hog
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« Reply #7 on: February 26, 2010, 09:33:35 pm » |
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The thought has crossed my mind! I'll take another look at the carb. I'm pretty sure that the old needle and seat was in the bag the mechanic showed me that he replaced. This can get fustrating, but I'm fairly hard headed. thanks
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slimpickins
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« Reply #8 on: February 26, 2010, 09:35:28 pm » |
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Ok, recoup. I just remembered my dad had the same problem.
Those 2 points are a safety feature. If the throttle cable breaks, the points connect and it kills the motor.
This is to keep it from hanging wide open and running away if the cable breaks.
He has had to take the points out and clean them with Emory cloth or fine sand paper.
If that does not work, the throttle cable is stretched and needs to be replaced.
It is set factory and if the cable is stretched the slightest bit the points contact and kill it.
Again, quick and easy fix is to put something between them but it does need proper fixing.
Should have triggered earlier but it took me a few minutes to decifer the situation.
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Pro-Staff @ Wild Boar USA www.wildboarusa.com"Peace is that brief, glorious moment in history, when everybody stands around reloading!" unknown Bacon is a vegetable! |
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Tusk Hog
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« Reply #9 on: February 26, 2010, 10:31:11 pm » |
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I believe you may be on to something. That can very easily be the problem. I'll try it tomorrow and let you know. Thanks again.
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setexasplott
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« Reply #10 on: February 26, 2010, 10:39:42 pm » |
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i have an 03 500 that did the same thing a piece of cardboard and i i have been running fine for over a year now it may not be right way but it works for me and now it aint broke so i dont need to fix it
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i know i should be hurtin but im smilin ear to ear
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Tusk Hog
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« Reply #11 on: March 09, 2010, 08:16:04 pm » |
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Anyone have any other ideas?
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