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Author Topic: Trouble shooting an 04 bruin 350  (Read 6298 times)
ananomaly
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« on: September 26, 2011, 03:24:21 PM »

It's backfiring and idling rough. It's not burning any oil. I have cleaned the jets and drained the gas and put 93 octane gas in it which did nothing to correct the problem. Any ideas?
Thanks  in advance.
Gary
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05 eiger 4x4 manual
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Chillinthemost
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« Reply #1 on: September 26, 2011, 05:01:00 PM »

Will it idle at all with the choke off?
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ananomaly
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« Reply #2 on: September 27, 2011, 08:35:38 AM »

It will maybe for a minute and very rough. then it gives out a pop and shuts down.
Thanks chillin
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05 eiger 4x4 manual
04 bruin
05 f150 crew 4x4
Gotta work but wanna ride.
Life should be a journy to the grave, body thoroughly used up,
totally worn out and screaming " Woo-Hoo...What a ride."
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« Reply #3 on: September 27, 2011, 09:59:00 AM »

make sure the rubber boot that holds the carb to the intake is not dry rotted or have a hole or crack in it.
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« Reply #4 on: September 27, 2011, 10:31:13 AM »

Did you try a new spark plug?
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ananomaly
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« Reply #5 on: September 27, 2011, 10:59:22 AM »

make sure the rubber boot that holds the carb to the intake is not dry rotted or have a hole or crack in it.
There's no obvious holes or cracks but when I spray carb cleaner on the boot ( Air box side ) the RPM's go down.
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05 eiger 4x4 manual
04 bruin
05 f150 crew 4x4
Gotta work but wanna ride.
Life should be a journy to the grave, body thoroughly used up,
totally worn out and screaming " Woo-Hoo...What a ride."
ananomaly
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« Reply #6 on: September 27, 2011, 11:00:32 AM »

Did you try a new spark plug?
I didn't replace it but have looked at it and it looked fine.
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05 eiger 4x4 manual
04 bruin
05 f150 crew 4x4
Gotta work but wanna ride.
Life should be a journy to the grave, body thoroughly used up,
totally worn out and screaming " Woo-Hoo...What a ride."
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« Reply #7 on: September 27, 2011, 11:28:22 AM »

Try a new one!! It would rule it out as a problem.
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Green 2011 Polaris Sportsman 500 H.O.
3500# winch
26" Mud Trax X/L on 14" STI's
Ricochet a-arm guards
Rev. over ride kit
3 HID light kit
3 light mod.

Uni air filters on both.

Red 2011 Polaris Sportsman 500 H.O.
Ricochet a-arm guards
HID 3 light kit
3 light mod.
Winch,wheels & tires still to
ananomaly
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« Reply #8 on: September 27, 2011, 02:10:21 PM »

Roger that...thanks
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05 eiger 4x4 manual
04 bruin
05 f150 crew 4x4
Gotta work but wanna ride.
Life should be a journy to the grave, body thoroughly used up,
totally worn out and screaming " Woo-Hoo...What a ride."
Chillinthemost
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« Reply #9 on: September 27, 2011, 08:26:37 PM »

It will maybe for a minute and very rough. then it gives out a pop and shuts down.
Thanks chillin
Ok then. When you turn the choke on will it idle better? If thats the case then you need to go back in the carb again. Are you 100% sure that you cleaned the pilot jet really well? These jets are very small, especially on a small machine  and you need to be able to hold it up in the light and see through it. I usually have to use a single small strand out of a piece of copper wire to clean a clogged pilot jet. If the carb was really nasty and you didnt get it really clean, then its possible that you did clean the jet well and it clogged again right away.
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ananomaly
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« Reply #10 on: September 28, 2011, 10:19:00 AM »

Ya know...I pulled a schematic of the carb off the net and there are more jets than the three I cleaned above the float. so I'm going to pull it again and really go through it.
Thanks again.
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05 eiger 4x4 manual
04 bruin
05 f150 crew 4x4
Gotta work but wanna ride.
Life should be a journy to the grave, body thoroughly used up,
totally worn out and screaming " Woo-Hoo...What a ride."
ananomaly
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« Reply #11 on: October 03, 2011, 11:53:02 AM »

Thanks Chillin...works like a charm. You're tip about the copper wire worked great.
I think it was the pilot jet but I went through them all to be sure.
Thanks again, I really appreciate the help Grin
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05 eiger 4x4 manual
04 bruin
05 f150 crew 4x4
Gotta work but wanna ride.
Life should be a journy to the grave, body thoroughly used up,
totally worn out and screaming " Woo-Hoo...What a ride."
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