what does a ignition coil on 05 polaris sportsman 90 supposed to read on meter
So you've established that your ATV doesn't have a spark or merely has a weak spark. But at present what?
Troubleshooting an ATV with no spark tin can be quite challenging and mildly frustrating, but it doesn't take to be. That's why I've made this simple stride-past-step guide to help you identify why your bike is acting up.
What causes no-spark or a weak spark on an ATV?
Your cycle'southward ignition arrangement consists of diverse components that work together to create a spark. Each component in the system is only as important as the other. They all have to office correctly, or in that location will be no spark or the spark will become weak.
When your ATV is not getting a spark, the trouble is with i or more of these electric components:
- The spark plug
- The spark plug wire
- The ignition coil
- The stator
- The crankshaft positioning sensor
- The CDI or ECU
- The bombardment
- Wiring and connectors connecting these components
How do yous diagnose no spark on an ATV?
The easiest way of identifying which of the listed components is failing is through a process of elimination.
With electrical issues, it is always better to check the most straightforward stuff get-go. If you assume the worst and you brainstorm by removing the stator, you may end up having to reassemble a bunch of components y'all didn't have to take autonomously.
By and large, you lot will find that there is a problem with the spark plug, the kill switch, a wire, or a connector.
By performing various tests, you should be able to pinpoint which component is faulty. Before you've established which part is acting up, there is no need to focus on one single component.
Troubleshooting-guide for an ATV with no spark
ane. Confirm that the ATV actually has no spark
Y'all may or may not already take done this step, simply you need to verify that the ATV actually has no spark earlier y'all continue troubleshooting.
While you may feel confident that a lack of spark is the issue, keep in mind that other starting bug could exist causing like symptoms. Therefore it's non enough to assume the spark is not at that place; you need to test information technology.
An ATV needs fuel, air, and spark to outset and. If you are not sure whether your bike not starting is caused past a lack of spark, or something else, we recommend y'all read this guide.
How to exam an ATV for spark
- Disable the fuel system. Information technology's a good idea to close the fuel tank petcock valve as a safety precaution if your bicycle has i or to remove the fuel pump fuse before checking the spark.
- Remove the ignition coil lead boot from the spark plug. Pull straight outwards from the engine.
- Remove the spark plug from the engine. Use a spark plug socket wrench. Spark plugs sockets are either 5/viii inches (16mm) or 13/16 (21mm) inches.
- Connect the spark plug with the ignition coil lead. Push the spark plug into the spark plug boot by mitt until it is seated.
- Place the spark plug on the cylinder head or most an exposed metal office of the frame. The plug's metal part must touch the metal on the engine or frame for this to piece of work. This will ground the spark plug so that it tin can create a spark.
- Creepo the engine and spotter for a spark. Yous may demand a helper to push the starter for y'all. Make sure to keep your hands at a condom distance from the spark plug. On a good for you spark plug, y'all should see a bright blue spark that fires continuously.
Alternatively, you tin can test the spark plug by using a cheap spark plug tester. Spark plug testers come in diverse styles, but hither are ii of the most common.
With the kickoff spark plug tester style, you place the tool's grooved role over the spark plug wire while the engine is running. The bulb inside the tool will flash to indicate a spark and how powerful and consistent information technology is.
The second fashion of tester connects where the spark plug normally would be. Remove the spark plug boot from the spark plug and connect information technology to the tool. The tool has an alligator prune that connects to basis, such equally the engine or an exposed metal part of the frame.
If there is a spark, it will announced within the see-through tool casing, jumping between the tho metal leads. If the spark is good, it will have a regular majestic-blue color. If the spark is weak, the spark inside the tool will announced with yellowish-red and a more inconsistent spark pattern.
Now that you have verified there is no spark; it'southward time to brainstorm the actual troubleshooting.
2. Brand sure the kill switch is on
The ATV volition not create a spark when the kill switch is off. Even so silly information technology may seem, you'd be surprised how often people forget to turn it on before attempting to start their ATV.
ATVs with electrical starter motors won't even creepo the engine if the kill switch is off. So if the engine will crank, y'all know that the upshot is likely not with the kill switch.
Pull start or kick offset ATVs, on the other hand, is another story. No matter how much And so make certain the switch is turned on before you stop up pulling until you've wet fouled the spark plug.
three. Make sure the battery is charged and has skilful ground
While some ATVs will run without a battery, others demand a healthy battery to ability the ECM (electric control module) and the electrical fuel pump. The ECM is a pocket-size computer that tells the ignition coil when to create a spark.
If the battery holds an insufficient charge, the ECM may non power up, and therefore volition not tell the ignition coil to create a spark.
Read the battery voltage by setting your multimeter to DC volts, place the ruby lead to the positive bombardment terminal and the blackness pb to the negative terminal. A healthy battery should read 12.45volts or more when fully charged.
If yous want to larn how to charge your battery correctly, delight head over to this guide.
To test bombardment ground, you should place blackness lead to the engine block or an exposed metal function of the frame. The ruby pb goes to the positive battery final. If the bombardment basis connector is adept, you should get a reading close to or identical with the one yous got when testing directly to the battery.
If you get a reading that indicates bad ground, make certain the main engine ground is properly fastened and has non corroded. Yous find it by tracing the big black wire coming from the battery.
four. Cheque the spark plug
Spark plugs are cheap and piece of cake to replace. They are considered consumables that may go bad for no apparent reason.
Be careful not to crank the engine for too long before checking the plug, or youøss risk overheating and possibly impairment the starter motor.
Whether the spark plug gapping is wrong, the plug has gone bad, or information technology'due south the wrong plug altogether for your engine, information technology may no longer exist able to provide a spark. Note that a spark plug may physically look fine simply all the same take gone bad.
The easiest style of testing if a bad plug is the issue is past replacing it with a new one so test for spark as described higher up. Yous don't even have to remove the one-time plug. Just pull off the bott, insert a new plug, and exam for spark.
If your new spark plug isn't creating a spark either, yous know the trouble is non with the actual spark plug.
v. Bank check for loose, damaged, or corroded connectors
A bad electrical connexion in a connector may forestall the ignition organisation from working as it should. Ensure all connectors in the ignition arrangement wiring harness are not damaged from corrosion, are not total of dirt, and are properly connected.
Check all connectors, particularly the ones that connect the kill switch or ignition key.
- Unplug the connector.
- Clean the pins with an electric cleaner.
- Apply dielectric grease to prevent future corrosion problems.
- Plug the connector in and out a couple of times to found a proper connection.
Now test if this has fixed your no-spark effect.
6. Cheque for damaged wires in the wiring harness
If a wire gets damaged, exposing the metal leads, you may go a brusk to ground. Trace all the wires connecting the various components of the ignition system. If you find a damaged wire, repair or supercede it.
seven. Bank check the kill switch and other safety switches
If the kill switch internals fails, information technology may stay off even when in the "on" or "run" position.
Yous tin exam the switch past performing a continuity test using a multimeter, a test light, or a simple continuity tester.
Insert i probe into each of the two cables going into the switch. There should be no continuity when the switch is off and continuity when it is on.
Alternatively, you tin do this unproblematic test:
- Put the kill switch in the "on or "run" position.
- Turn the ignition key one step clockwise to turn on the power. Delight do not turn information technology far enough to activate the starter. If the instrument panel lights upwards, you know you have power.
- Then turn off the kill switch. You should at present encounter no calorie-free or any other signs of power. You at present know that the switch works.
If your ATV has a 5-pin CDI-box, you tin utilise it to place a safe switch issue. This test only works on 5-pin CDIs, typically found on cheaper Chinese youth ATV models or older ATVs.
- Await for a minor black box with 5 wires going to it.
- Remove the CDI box from the ATV. Yous may leave the rubber CDI box suspension continued to the bike's frame.
- Locate the center wire, usually white with a blackness stripe.
- Apply a tiny screwdriver to release the tap that holds this pin in the connector.
- Remove the black and white wire from the connector. When removing this wire, you disable all of the many safety switches ordinarily establish on shepherd Chinese youth ATVs.
- With the center wire pin removed, reinstall and exam if you get a spark by removing the spark plug and expect for a blue spark. Do not attempt starting the bike as you volition non exist able to stop the engine with the white and black eye wire removed.
- If you get a spark, you know that the issue is with a safety switch.
8. Check the ignition scroll
The ignition roll generates the electrical pulses of current sent to the spark plug to create a spark.
- On single-cylinder ATVs, the coil is generally cylindrically shaped with two connectors at one end (the primary side) and 1 unmarried high gauge ignition whorl lead going out the other cease (secondary side).
- On ATVs with more than one cylinder, the ignition coil pack may have a more than boxed shape, but it could be cylindrical also.
How to test the ignition curl using a multimeter
With a multimeter, you lot tin read the ohms resistance of the chief side and the secondary side of the ignition coil. Each of these readings can tell you whether the gyre is ok or not.
- Locate the ignition curl.You will find the ignition ringlet by tracing dorsum the spark plug wire from the spark plug cease.
- Disconnect the ignition coil and remove it from the ATV. This makes testing easier and safer.
Test the chief side:
- Put the multimeter to its ohms (resistance) setting.
- Place the leads on the leads on the master side terminals of the ignition coil. Place 1 lead on each terminal; it doesn't matter which lead goes where.
- Read the ohms resistance. A typical ohms resistance reading on an ignition curlicue'due south master side ranges from 0,two to five ohms. Refer to your ATV service manual for the exact value for your bike. If y'all get a reading outside this range, the ignition coil is likely bad and needs replacing.
Test the secondary side:
- On dual lead ignition coils, place one lead in each of the spark plug boots. Your typical reading will range from 15k to 25k ohms.
- On single pb ignition coils, place one lead in the spark plug kicking so that it touches the spark plug connector, and the other lead to one of the connectors of the master side of the ignition coil. Your typical reading will range from 10k to 15k ohms. Nigh of the resistance comes from the spark plug kick. That'south why you typically will get a lower reading on single lead ignition coils.
- Whatsoever reading outside the typical ranges may point a bad ignition roll.
9. Check the CDI or ECU
While modern ATVs present have ECM/ECU, many cheaper Chinese youth ATVs and older ATVs apply five-pivot CDI boxes to control the spark.
There aren't whatever proficient ways of testing these boxes at home. A CDI is relatively cheap, so your best bet is to replace information technology and try once again.
ECU's, on the other hand, are more expensive. You're likely improve off testing or replacing both your ignition coil or stator before maybe replacing the ECU at concluding.
ten. Bank check the stator
The stator is what creates the electricity on your ATV. It is located behind an engine comprehend, but luckily you can test it without removing it.
There are two primary ways you tin can exam the stator. A static test, where y'all test internal resistance when the bike is turned off, and a dynamic test, where you read voltage while the engine is running.
If the stator fails whatsoever of the tests, you may have a lacking exciter coil within the stator, and the stator needs to be replaced.
xi. Cheque the crankshaft position sensor
The crankshaft position sensor (CKP-sensor) registers and tells the engine exactly where the piston is equally it moves up and down. This data is necessary for the CDI or ECU to say to the ignition coil when to power the spark plug.
The CKP sensor is either congenital into the stator assembly or located separately on the engine.
Await for damaged wires going to the sensor or a cracked or bent sensor bracket if you lot have a separately located sensor.
You can exam the sensor by using your multimeter to measure its resistance:
- Remove the sensor connector, or place which wires are going to your sensor.
- Set your multimeter to ohms, put 1 lead on each sensor connector, or insert the probes to the sensor wires if they don't have easily accessible connectors.
- Refer to your service transmission to learn what reading y'all should get on your specific sensor.
Source: https://boostatv.com/troubleshooting-no-spark/
Post a Comment for "what does a ignition coil on 05 polaris sportsman 90 supposed to read on meter"