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No fire I am not getting fire to the plug. What are some things I can check?

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  • ATVs Master
  • 8,220 Answers

Most likely the coil i imagine. When you replace the coil put a business card between the coil and the stator then tighten the bolts and remove the card, you will have the perfect gap.

Posted on May 08, 2013

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I have a 2016 Polaris sportsman 570 she's got a fuel pump tries starting her she will keep winding over but won't start any help would be nice


Make sure the kill switch is in the run position.

AN engine need three things to run:
Compression
Timed spark
Fuel

now.....
1*. Check the spark plug to make sure it is firing.. remove the spark plug.. make sure you have metal to metal contact and then turn the engine over.. (this might be a two man job).. the spark plug should have a nice big blue white spark,,(some electronic's will have a weak orange and still fire fine!)
2. Make sure you have gas in the tank and (going into the carb/FI)... (have to ask-actually have had 3 bikes in my career come in complaining -won't start...!! Add gas and they ran.. WOW!.. never charged any of them....the embarrassment on their face was payment enough!)
3*. While the spark plug is out... place your finger over the spark plug hole firmly .. keep the spark plug cap away from your hand..turn the engine over and see if it will blow your finger off..(it should blow it off the hole easily).

If any one of these three are not nearly perfect.. you have an issue!!

Check these and repost with the results...

Dec 17, 2016 | Polaris ATV

1 Answer

Can the charging system on a 2004 polaris ranger cause back firing cutting out and dying


these ATVs do a lot of hard work for size of motor

worth checking other things as per normal servicing
new spark plug
clean air filter
drain and add new fuel to tank
wont hurt to clean the carby or bowl contents
if fitted with a fuel filter inline .. fit a new one

and valves adjustment if still back firing

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Oct 13, 2016 | ATVs

1 Answer

The engine backfires... engine is not running properly on higher rpms.


What's your year, make & model?

Standard issues could be your carb, your timing, or possible your cdi - the cdi is actually your 'igniter' - it's what sends the signal to your igniton coil - then to spark plug to fire. I always ask this, and please don't take offense - but what I've seen more than anything else is a bad ground, loose wire, pulled plug - check that thing from front to back for any loose cables or wires - and if everything checks out let me know and I can get you started on trouble shooting it - 7 out of 10 times I've had someone tell me this - it was a loose 'something'.

Dec 29, 2015 | ATVs

1 Answer

I have a Yamaha Bayou 230cc And it wont start.


Check your spark plug to see if it is fouled out see if it is dirty with carbon deposits white discolored or tan looking also check to see if the plugs are wet with gas or oil if everything looks good and you don't smell a high content of gas the next thing you could do is compression check and or check intake valves

Jan 27, 2015 | ATVs

1 Answer

Four wheeler back fired now want fire


Check the spark plug for spark and check the plug to see if it is getting fuel or if it is gas fouled to much fuel

Oct 10, 2014 | ATVs

1 Answer

I have a 2004 polaris sportsman 500 when it gets hot it cuts off and back fires


sounds like the coil is weak or the electronic spark box is goin fuel filter been changed ?right gap on the Plugs? need more imfo on it to do more thks

Jul 29, 2014 | Polaris 2004 Sportsman 500 H.O

1 Answer

Yamaha no spark


check your ground wires,could be a bad coil lead to the plug,a bad coil in the stator,a bad plug?try these things first

Jul 14, 2014 | ATVs

2 Answers

No fire to plugs on kawaliski 19 hp. lesco commercial mower


bad fuse, plug,plug wire,ignition coil,ignition coil wiring,badpick up sensor,faulty cdi,cheers

Jul 07, 2014 | RTO 200cc Full Size Four Wheeler ATV

2 Answers

Have put new fuel pump on ,cleaned carb,new plug, gets gas plug fires but won't start, checked compression at98# don't know what else to do .


The battery voltage on a Suzuki I had would drop low enough during cranking with the electric starter motor not allowing the spark to be strong enough to run, the voltage regulator also didn't function correctly once and as the battery voltage dropped during operation engine would start to bog down and cut out due to low voltage for the ignition system.

Jul 18, 2013 | ATVs

1 Answer

WEAK FIRE


check cable, spark plug, spark plug cap for good resistance levels. then check the coil. easy fix.

May 15, 2012 | RTO 200cc Full Size Four Wheeler ATV

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