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03-20-2011, 08:10 AM
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#1 (permalink)
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Junior Member
Member #9189
Join Date: Mar 2011
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2003 trx250ex wont run
It has spark and is getting fuel but will not start. It wil pop a couple of times and thats all. It got stuck in the snow and hasnt run since . I have drained gas and put new in. put new plug in.changed air filter. any ideas
Last edited by Jason Murphy; 03-20-2011 at 08:16 AM.
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03-20-2011, 08:18 AM
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#2 (permalink)
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Super Moderator
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How does the air filter/air box look? Did any mice make the airbox a home?
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03-21-2011, 07:21 PM
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#3 (permalink)
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Junior Member
Member #9189
Join Date: Mar 2011
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I changed filter still wont run
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03-21-2011, 07:51 PM
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#4 (permalink)
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Senior Member
Member #8144
Join Date: Jan 2011
Location: oklahoma
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man you mention mice, i had a thread about rats eating a tube and it wouldnt run, it was cold out kinda like what your saying here.
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03-21-2011, 09:03 PM
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#5 (permalink)
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Senior Member
Member #7182
Join Date: Dec 2010
Location: Greenville, SC
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I have a 2006, and mine did the same thing. Ended up needing a carb clean. Once I got it cleaned, I ended up frying the cdi. What happens if you pour a small capful of fuel down the spark plug hole and then try and start it? Will it run for a few seconds?
The only thing that throws me off is that you say that it got stuck in the snow and hasn't run since. ????? Carb isn't going to dirty itself in the snow, but if you let it sit for 2-3 months or longer after that, you will need to clean it anyway.
How are you sure it's getting spark?
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03-21-2011, 10:50 PM
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#6 (permalink)
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Super Moderator
Member #2048
Join Date: Feb 2010
Location: north little rock, ar.
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first..spray a short burst of starting fluid in the carb...does it fire up and run ?..if so..then you got carb issues...if it don't fire up and run for a few sec's..then you got compression issues..either from jumped timming..or bad rings.
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03-22-2011, 12:42 PM
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#7 (permalink)
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Senior Member
Member #7182
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pros and cons to starting fluid. I have used it, but just don't get happy with that$ 1.50 can! Spray a short burst like shadetree says. If it fires up for a short time, DO NOT repeat the process. You have already found the problem. Continuing to run it with repeated bursts is NOT recommended.
You can spray some on the filter if you like. I used to use starting fluid, but no longer want the risk. Others use it religiously. Your choice.
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03-22-2011, 02:09 PM
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#8 (permalink)
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Super Moderator
Member #948
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If you don't feel comfortable using starting fluid, just pour some gasoline in a spray bottle and use it.
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03-23-2011, 05:02 PM
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#9 (permalink)
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Junior Member
Member #9189
Join Date: Mar 2011
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I tried starting fluid and still nothing.Pulled plug and put it by metal and could see it spark.It has a aftermarket pipe . Checked it and it has no gasket on the head. Burnt valves? Thanks For all the help.
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03-24-2011, 06:08 PM
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#10 (permalink)
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Junior Member
Member #8899
Join Date: Mar 2011
Location: Ashland, OH
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check the valve clearances. Sounds like what my Recon was doing and I was told to check the valves and the intake valve was tight so it wouldnt start
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