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What causes my Polaris ranger to backfire when starting?

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Badly adjusted ignition timing. It is firing too far advanced before TDC (top dead centre of piston stroke) if backfiring through the carb, or too far retarded if firing through the exhaust.

Posted on Dec 14, 2016

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Posted on Jan 02, 2017

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89 Polaris Ranger500 6x6 side by sideis coughing,spitting and backfireing thew carb.whats the fix


I would start by pulling and cleaning the carb, air filter and spark plug. Usually the cause starts with dirty air filters that gets the carbs dirty which then cause the polaris to run rich and the plug will start to foul. The unburnt fuel ignites at the wrong time and back fires. A less likely problem would be out of timing.

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JF. Timing out, valve adjustment.
Check the attached links,Manuals and guides, Good luck with your Bike
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

ATV TROUBLESHOOTING AND MAINTENANCE
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http://www.carlsalter.com/motorcycle-manuals.asp

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Backfires when throttle released.


Hi Omer this is normal for many of these off road machines it is caused by cold air being vacuumed up the exhaust once the throttle is released. It causes noise like thunder where warm air collides with cold. If the exhaust system is good with no leaks thers nothing that can be done. Regards Jim...

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2015 Polaris 900 won't start. Was starting with fast idle, rough running with backfires, now won't start at all. Was running perfect.


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I HAVE A 1999 POLARIS 335 SPORTSMAN STARTS FINE WHEN I TRY TO ACCELERATE THE QUAD BOGS FEELS LIKE ITS GOING TO STALL BUT THEN GOES BUT NOT AT FULL POWER AFTER RELEASING GAS THERE IS A LOUD BACKFIRE ...


carbon on the plugs indicates flooding
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have the carby /fuel system professionally overhauled

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