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Polaris ranger 500 4x4 series 10 problems: runs rich, fouls plugs, loss of power, power surges (moving or not) replacements: plug wire & coil, rev limiter, recterfier/regulator, several plugs, cam shaft, reseat valves, compression check, cleaned carb several times, pressure check on carb, cleaned all wire connections, check all grounds, fuel pump, replaced all fuel lines, fuel filter, adjusted float to spec, & more. please help! I'm lost.

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6ya6ya
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: my polaris ranger 700efi runs good while cold,

although the plugs that were in it weren't very old, one plug must have broken down, because after putting new plugs in it, it runs ok now.

Posted on Mar 07, 2010

  • 1 Answer

SOURCE: 2004 POLARIS 500 RANGER WILL NOT REV OVER ABOUT

500 polaris ranger 6 wheeler can only get it to rev out if i take the air intake cover off back

Posted on May 10, 2011

playercardzr
  • 5 Answers

SOURCE: How do I fix my front wheel drive system on my 2004 ATV 400 Sportsman Late model? After extensive work and parts replacement my all wheel drive is not working.

I have battled with my 4wd, did many of the same parts changes you did. Put it in the garage and was about to tear it all apart, and I brushed against the red kill switch on the left handlebar, and the 4wd icon on the dash lit up, and everything worked! There is a little dead spot in the switch, and if it isn't clicked right in the middle, AWD doesn't work. Once I figured this out, it works great! Hope it's as simple as that for someone else!

Posted on Mar 17, 2015

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I have a polaris ranger 6x6 500cc the plug in it now is a ngk bkr5e 7938. a friend gave me 2 unused ngk b7e s plugs and said that they wood run fine. Are these 2 ngk b7e s ok or what?


The figure 7 represents the heat range of the plug. Usually it is unwise to deviate from specifications unless problems force choosing a different heat range. If the spark plug regularly fouls then a hotter spark plug could improve the problem - with NGK that would mean moving from 5 to 4.

Any move must be made with care to avoid the engine damage possible if the spark plug is too hot.

Hot and cold plugs, incidentally, indicate the amount of heat the spark plug dissipates from the centre to the body and doesn't affect the temperature of the engine. Broadly cool running engines need hot spark plugs and hot running engines need cold plugs so in each case the spark plug nose will achieve the self-cleaning temperature without becoming too heated.

Moving from a 5 heat range to a 7 (NGK) is moving to a colder plug so yes it will run fine, at least for a while, though you could find plug fouling might be a problem...

Jun 18, 2017 | ATVs

1 Answer

How to check ignition system on a 2004 ranger 400


Pull a plug wire or coil pack and see if you get spark when a spark tested is plugged into the boot and the engine cranked. Below is a picture of spark testing tool. About $5
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Feb 28, 2017 | Polaris ATV

1 Answer

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.

Feb 13, 2017 | Polaris ATV

1 Answer

2011 polaris IQ SHIFT 600 efi, running rich and fouling plugs


excessive fuel pressure and faulty injectors are a good bet

Jan 08, 2016 | ATVs

1 Answer

Overheating and stalling


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    www.prcforum.com/.../26-ranger.../29358-2011-xp-800-overheating.ht...
    Sep 9, 2010 - 10 posts - ‎5 authors Member #: 12988; Join Date: Sep 2010; Location: Glasgow, Missouri; Posts: 11 ... He said it started "stalling" and running rough then he noticed the heat ... My week old 2011 Ranger 800 XP/LE doesn't run hot but the fan does ... Thread: 2011 ranger 800 xp **hot** **won't run
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Nov 05, 2015 | Polaris 2010 Ranger 800 XP

2 Answers

2010 sportsman 500 hd runs then dies turns over won't start


My opinion, it's running rich and letting it idle for 5 minutes doesn't help. Whether it's carbed or EFI, when the machine is cold, it needs more fuel. As engine temperature increases, it doesn't need as much fuel, and the carbon that started building up on the plug is burned back off. When a machine isn't ran for very long, carbon deposits continue to build on the plug. The carb itself may need to be rejetted/adjusted, it it's running rich,

Aug 12, 2014 | Polaris 2010 Sportsman 500 H.O

1 Answer

Polaris troubleshooting


water in gas or bad gas. fuel filter replace. check plug too prolly fouled or worn out.

Jul 22, 2014 | Polaris 2008 Sportsman 500 H.O

1 Answer

Atv loss of power


Get it fixed, then turn it on.

May 25, 2017 | Polaris ATV

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