05 Kingquad starts but backfires or shuts off. - Suzuki ATV Forum
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post #1 of 5 Old 10-06-2013, 04:07 PM Thread Starter
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05 Kingquad starts but backfires or shuts off.

I have a 2005 Kingquad 700 that I let my brother borrow so he could go riding with his friends and when I got it back it would barely crank. So I replaced the spark plug and put fresh gas in it. It will crank better now but when it cranks and I hit the gas after it idles for a while it sometimes shuts off or sometimes it will rev but when it does rev it starts back firing out of the exhaust and/or the intake. It does the same thing when I put it in gear and it will barely move. somebody said it could be the throttle position switch Any idea what it could be? and how I can fix it?
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post #2 of 5 Old 10-06-2013, 06:05 PM
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I'm not very familiar with the newer style King Quads, so my knowledge about them is very limited. But, it could be anything from a computer issue, fuel injector, or throttle positioning sensor, etc. There is a video however on adjusting the throttle positioning sensor from our forum member Tubbytubb. Maybe check that out and see what you can come up with. And welcome to the forum.

( Adjusting TPS(Throttle Position Sensor On Fuel Injected King Quad )

2000 Suzuki King Quad 300 4x4
K&N Air Filter
2300 lbs Superwinch
Kenda Bear Claws (Rear 25X10-12) - (Front 24X9-11)
Differential Lock Mod
13,000 + km/s
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post #3 of 5 Old 10-06-2013, 08:06 PM Thread Starter
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thanks for the info! I will be sure to check it out
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post #4 of 5 Old 10-15-2013, 12:39 PM Thread Starter
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Well I adjusted the TPS sensor to the correct position and still does the same thing I think. I think it may be the ecu but not for sure. Any way I could tell? I know its getting fuel while its at idle but when I hit the throttle it doesn't get any more fuel.
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post #5 of 5 Old 10-16-2013, 02:27 PM
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Could be the ECU or a bad fuel injector. It's hard to say since the new atv's are all pretty much computerized. And without proper equipment to read what the computer is reading/doing it's hard to say.

2000 Suzuki King Quad 300 4x4
K&N Air Filter
2300 lbs Superwinch
Kenda Bear Claws (Rear 25X10-12) - (Front 24X9-11)
Differential Lock Mod
13,000 + km/s
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