Outy 400 - Runs good, gets hot dies, cools off runs good again - Can-Am ATV Forum
 
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post #1 of 9 Old 10-09-2010, 08:38 PM Thread Starter
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Outy 400 - Runs good, gets hot dies, cools off runs good again

'06 Outlander 400, starts fine and runs fine. After running through sand at low RPM for about 15 -20 minutes it dies, sounds like it is running out of gas. Will not restart unless I full choke it but it won't keep it running for more than a few seconds if I give it any throttle or turn off choke. Let it sit for about an hour and it started and ran for about 30 seconds then the same thing happened. Once I tow it back to the trailer and get home (about an hour and a half more) it will start and run just fine again. The valves are fine, fuel is clean, and I ran a large dose of seafoam through it last weekend when this occurred the first time. I have no ideas since it will start and run fine when cold and not run at all once it gets hot. Any ideas would be appreciated.

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post #2 of 9 Old 10-09-2010, 08:46 PM
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Quote:
Originally Posted by msumrall View Post
'06 Outlander 400, starts fine and runs fine. After running through sand at low RPM for about 15 -20 minutes it dies, sounds like it is running out of gas. Will not restart unless I full choke it but it won't keep it running for more than a few seconds if I give it any throttle or turn off choke. Let it sit for about an hour and it started and ran for about 30 seconds then the same thing happened. Once I tow it back to the trailer and get home (about an hour and a half more) it will start and run just fine again. The valves are fine, fuel is clean, and I ran a large dose of seafoam through it last weekend when this occurred the first time. I have no ideas since it will start and run fine when cold and not run at all once it gets hot. This is my wife's machine and she insists I talk to somebody "who knows something" and "fix it" before she will go out again. Any ideas would be appreciated.

Just a guess here, carb issue?? How many miles??

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post #3 of 9 Old 10-09-2010, 09:22 PM Thread Starter
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It has about 1400 miles on it. It had about 1050 when we got it in the spring.
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post #4 of 9 Old 10-09-2010, 09:24 PM
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The fuel system could be vapor locking or the fuel pump could be bad. It sounds more like a fuel pump issue since it runs fine when it is cool than when it heats up it sounds like the engine is starving for fuel. I always start looking for the cheaper fix than work up to the more expensive things. Or just take it to a dealer and hope for the best! Good Luck!

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post #5 of 9 Old 10-09-2010, 09:42 PM Thread Starter
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How do you fix the vapor locking thing?
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post #6 of 9 Old 10-09-2010, 10:03 PM
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You can try insulating your fuel line from the tank to teh carb. Check the routing too, previous owner could have re-routed it too close to teh exhaust. But, I really don'w think this is what is wrong. If the fuel is "vaporizing" in the line, the rubber fuel line would probably fail. You might check your rectifier and voltage when hot.
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post #7 of 9 Old 10-09-2010, 10:12 PM
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Check your gas cap. If the vent in it is not working properly it won't get fuel fast enough to fill the carb. As you run it it will drain the bowl and take a while to re-fill.

Just try running it with the cap off, see what it does.

We ran into this on 2 different machines on our last ride.

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post #8 of 9 Old 10-10-2010, 02:51 AM
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Quote:
Originally Posted by Hampster rancher View Post
Check your gas cap. If the vent in it is not working properly it won't get fuel fast enough to fill the carb. As you run it it will drain the bowl and take a while to re-fill.

Just try running it with the cap off, see what it does.

We ran into this on 2 different machines on our last ride.

I do not know if this will work or not, but run it until it starts running rough then open your gas cap. If it works then you know the vent is bad on your cap. It is hard to believe that your fuel is vaporizing before it makes it to the carbs as it would have to be really hot for this too happen... as in your engine overheating. Let us know what you find!!

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post #9 of 9 Old 10-24-2010, 09:55 PM Thread Starter
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Seems like the problem was confined to the fuel pump. I replaced it and no more problems. THanks for all the support.
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