Question about Polaris ATV

1 Answer

I have a Polaris predator 90 will not crank or turn ver with spark plug installed but is I take the plug out engine tuns but of curse won’t run without spark plug spark plug is new with god spark

Posted by Manny fresh on


1 Answer

Al Schrader

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has achieved Level 3.

  • Master
  • 438 Answers

Test the compression using a compression tester.
My guess a valve is stuck closed.
A compression test will show this.

Posted on Mar 31, 2019


5 Related Answers


  • 83 Answers

SOURCE: 2004 polaris predator 500 3 new batterys dying can't charge them

I hope you got this problem fixed, just happened to my predator, it was indeed the voltage regulator. I picked up a service manual that includes part numbers and installation procedures from for 15 bucks.

Posted on Sep 26, 2009



  • 1 Answer

SOURCE: Polaris Sportsman 90 ATV With No Spark

sportsman 90 with no spark

Posted on Nov 28, 2009


  • 9 Answers


have to remove front guards and fuel tank and have the right size tube spanner or socket/extensions

Posted on Sep 21, 2010



  • 4803 Answers

SOURCE: 1994 Chevy K1500 engine cranks

The troubleshooting charts for your ignition system are copyrighted and I cannot post them here. You can have access to them by subscribing to fo a small fee.

The MOST LIKELY cause of your problem is a failed distributor module. (inside the distributor) The symptoms you described can also be caused by many other things like loose or corroded connectors or even a failed Powertrain Control Module (PCM)

Please also review this article:

What Else Could Be Wrong?

Posted on Jul 18, 2011


Reynaldo Andico

  • 2431 Answers

SOURCE: 1998 Ford Explorer, 4.0 SOHC No

You are at thhe right trail what controls spark is coil pack crank sensor sparkplugs and plug wire but the most important is power . I mean 12 volt connections and ground This includes checking fuses you need a simple volt meter doesnt have to expensive or fancy just to pick up 12 volts let start with fuses in the engine juction box (there not mark to what it belongs to) make sure none are open. especially fuse 19 and 24 , next go to the crank sensor make sure the tabs are snuggly on now to the coil pack there is a red and light green wire this comes from ignition and feeds 12 volts at the coil pack measure that voltage is it 12 volts if not correct it this is from ignition switch ( you can make a tool that feed 12 volt with a wire and a fuse in series and attatch it to battery and the primary wire this is known as hot wire) next go to the ECM wiggle the wires see if that get a connection going if not go back to the ICM here are the wire you are to measure the tan light green, this is from ECM and it is pulsed it measure 5vlts to 0 volts switched then measure the tan orange the same thing 5 volts to zero,then tan white again 5vlts to zero. any one of these 5 to zero fails you fix is the ecm

Posted on Aug 21, 2011

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

My 2007 POLARIS PREDATOR 500 won't start

Hey Stephen,
It take three (3) things to make an internal combustion engine run,(assuming all internals are good)

1. A properly timed spark
2. Adequate compression >120psi
3. Proper air/fuel ratio

eliminate each one of these, one at a time... then you have the reason it won't run. That is how a professional diagnoses a problem

Sep 26, 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

Feb 28, 2017 | Polaris ATV

1 Answer

Very little spark

bad plug? bad plug wire boot ? dirty pickup coils inside eng.. bad grnd @ coil ? loose wiring ? bad wiring ?start w/these and you will prolly find dirty or loose @ 1 of the above. check plug gap?

Jul 12, 2014 | Polaris 2005 Predator 90

1 Answer

Where should the jets be set on a polaris predator 90 ?

The jets are preset, they have specific diameter hole sizes. The air screw is usually 1.5 to 3 turns out from lightly seated position. Adjust while engine is hot! The idle screw is a personal preference.. not too high.

Jul 06, 2014 | ATVs

1 Answer

Polaris 50 has no spark

Check the power comming from the stator plate.

Feb 08, 2014 | Polaris 2004 Predator 50

1 Answer

Adjust carburetor polaris atv

turn mixture screw all the way in, and back it out 1-1.5 turns

May 04, 2013 | Polaris 2004 Predator 90

1 Answer

1996 Polaris Sportsman 400 Will Not Start

If your atv has been sitting this long, the carb is probably stopped up internally... take the carb to a qualified professional and have it cleaned and set...(take a few pictures so you know where all the hoses re-attach)

ALL it takes for an engine to run is:
1. A timed spark
2. Adequate compression
3. Proper fuel/air ratio delivered

Aug 12, 2017 | Polaris ATV

1 Answer

04 polaris predator was running fine yesterday now wont start for nothing.........has spark fuel **** on engine run swithch on battery fully charged, lights work bright turns over but will not start, even...

Sounds like one of the wires on the loom might have come undone, just run through the loom, especially all the wires to the ignition.If that fails, looking at the model, could potentially be a CDI failure. Good luck

Dec 31, 2017 | Polaris ATV

1 Answer

Polaris 90 will not start...turns over but not firer

coil maybe bad. lots of reasons here
cdi maybe bad i would try boot on spark plug wire first screws off and back on with new one

Dec 05, 2017 | Polaris ATV

Not finding what you are looking for?
Polaris ATV Logo

Related Topics:

216 people viewed this question

Ask a Question

Usually answered in minutes!

Top Polaris ATVs Experts

john h

Level 3 Expert

23424 Answers


Level 3 Expert

85239 Answers


Level 3 Expert

858 Answers

Are you a Polaris ATV Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides